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Die Spring Colour Charts & Compression Ratings.

All die springs use colour codes to visually show their load rating, but the die spring colour code system differs between JIS and ISO manufacturing standards, which often causes confusion and, in some cases, damage to machinery.

This page, along with the die spring charts below, exists to help consolidate die spring colour codes in clear tables so you can quickly identify die spring load ratings and standards at a glance. You’ll also find a die spring compression chart with typical spring sizes and load strengths at 25%, 30%, 35% and 40% compression to support fast, accurate selection.

Die Spring Colour Charts

The following die spring colour charts break up our die spring load ratings by aligning them with their colours and standards. If you're not sure what type of die spring you have, we hope this die spring colour chart helps with identification and discovery, making it simple to find a replacement.

JIS Die Spring Colour Codes

Manufacturing Standard	Colour	Strength Classification
JIS	Yellow	Extra Light Duty
	Blue	Light Duty
	Red	Medium Duty
	Green	Heavy Duty
	Burgundy	Extra Heavy Duty

ISO Die Spring Colour Codes

Manufacturing Standard	Colour	Strength Classification
ISO	Green	Light Duty
	Blue	Medium Duty
	Red	Heavy Duty
	Yellow	Extra Heavy Duty

Die Spring Compression Charts

The die spring compression chart below organises typical load strengths in newtons by manufacturing standard, diameter and duty class at 25%, 30%, 35% and 40% compression, making it easy to compare options and identify a suitable replacement.

JIS Die Spring Compression Data

Extra Light Duty Spring Compression Data

Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	Spring Constant		Free Length x 40% (1,000,000 cycles)		Free Length x 45% (500,000 cycles)		Free Length x 50% (300,000 cycles)
Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	(N / mm)	(Kgf / mm)	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])
JIS	Yellow	Extra Light Duty	8	10	15.24	1.55	4	58.8 [6]	4.5	68.6 [7]	5	78.5 [8]
				15	10.16	1.04	6		6.8		7.5
				20	7.62	0.78	8		9		10
				25	6.1	0.62	10		11.3		12.5
				30	5.08	0.52	12		13.5		15
				35	4.36	0.44	14		15.8		17.5
				40	3.81	0.39	16		18		20
				45	3.39	0.35	18		20.3		22.5
				50	3.05	0.31	20		22.5		25
				55	2.77	0.28	22		24.8		27.5
				60	2.54	0.26	24		27		30
				65	2.35	0.24	26		29.3		32.5
				70	2.18	0.22	28		31.5		35
				75	2.03	0.21	30		33.8		37.5
				80	1.91	0.19	32		36		40
			10	20	9.81	1	8	78.5 [8]	9	88.3 [9]	10	98.1 [10]
				25	7.85	0.8	10		11.3		12.5
				30	6.54	0.67	12		13.5		15
				35	5.61	0.57	14		15.8		17.5
				40	4.91	0.5	16		18		20
				45	4.36	0.44	18		20.3		22.5
				50	3.92	0.4	20		22.5		25
				55	3.57	0.36	22		24.8		27.5
				60	3.27	0.33	24		27		30
				65	3.02	0.31	26		29.3		32.5
				70	2.8	0.29	28		31.5		35
				75	2.62	0.27	30		33.8		37.5
				80	2.45	0.25	32		36		40
				90	2.18	0.22	36		40.5		45
			12	20	13.62	1.39	8	107.9 [11]	9	122.6 [12.5]	10	137.3 [14]
				25	10.9	1.11	10		11.3		12.5
				30	9.08	0.93	12		13.5		15
				35	7.78	0.79	14		15.8		17.5
				40	6.81	0.69	16		18		20
				45	6.05	0.62	18		20.3		22.5
				50	5.45	0.56	20		22.5		25
				55	4.95	0.51	22		24.8		27.5
				60	4.54	0.46	24		27		30
				65	4.19	0.43	26		29.3		32.5
				70	3.89	0.4	28		31.5		35
				75	3.63	0.37	30		33.8		37.5
				80	3.41	0.35	32		36		40
				90	3.03	0.31	36		40.5		45
			14	25	13.95	1.42	10	142.2 [14.5]	11.3	156.9 [16]	12.5	176.5 [18]
				30	11.62	1.19	12		13.5		15
				35	9.96	1.02	14		15.8		17.5
				40	8.72	0.89	16		18		20
				45	7.75	0.79	18		20.3		22.5
				50	6.97	0.71	20		22.5		25
				55	6.34	0.65	22		24.8		27.5
				60	5.81	0.59	24		27		30
				65	5.36	0.55	26		29.3		32.5
				70	4.98	0.51	28		31.5		35
				75	4.65	0.47	30		33.8		37.5
				80	4.36	0.44	32		36		40
				90	3.87	0.4	36		40.5		45
				100	3.49	0.36	40		45		50
			16	25	16.56	1.69	10	166.7 [17]	11.3	186.3 [19]	12.5	206 [21]
				30	13.8	1.41	12		13.5		15
				35	11.83	1.21	14		15.8		17.5
				40	10.35	1.06	16		18		20
				45	9.2	0.94	18		20.3		22.5
				50	8.28	0.84	20		22.5		25
				55	7.53	0.77	22		24.8		27.5
60	6.9	0.7		24	27	30
65	6.37	0.65		26	29.3	32.5
70	5.91	0.6		28	31.5	35
75	5.52	0.56		30	33.8	37.5
80	5.18	0.53		32	36	40
90	4.6	0.47		36	40.5	45
100	4.14	0.42		40	45	50
125	3.31	0.34		50	56.3	62.5
18	25	20.09	2.05	10	206 [21]	11.3	226 [23]	12.5	255 [26]
	30	16.74	1.71	12		13.5		15
	35	14.35	1.46	14		15.8		17.5
	40	12.56	1.28	16		18		20
	45	11.16	1.14	18		20.3		22.5
	50	10.04	1.02	20		22.5		25
	55	9.13	0.93	22		24.8		27.5
	60	8.37	0.85	24		27		30
	65	7.73	0.79	26		29.3		32.5
	70	7.17	0.73	28		31.5		35
	75	6.7	0.68	30		33.8		37.5
	80	6.28	0.64	32		36		40
	90	5.58	0.57	36		40.5		45
	100	5.02	0.51	40		45		50
	125	4.02	0.41	50		56.3		62.5
20	25	25.24	2.57	10	255 [26]	11.3	284 [29]	12.5	314 [32]
	30	21.04	2.15	12		13.5		15
	35	18.03	1.84	14		15.8		17.5
	40	15.78	1.61	16		18		20
	45	14.02	1.43	18		20.3		22.5
	50	12.62	1.29	20		22.5		25
	55	11.47	1.17	22		24.8		27.5
	60	10.52	1.07	24		27		30
	65	9.71	0.99	26		29.3		23.5
	70	9.02	0.92	28		31.5		35
	75	8.41	0.86	30		33.8		37.5
	80	7.89	0.8	32		36		40
	90	7.01	0.72	36		40.5		45
	100	6.31	0.64	40		45		50
	125	5.05	0.51	50		56.3		62.5
	150	4.21	0.43	60		67.5		75
22	25	31.38	3.2	10	314 [32]	11.3	353 [36]	12.5	392 [40]
	30	26.15	2.67	12		13.5		15
	35	22.41	2.29	14		15.8		17.5
	40	19.61	2	16		18		20
	45	17.43	1.78	18		20.3		22.5
	50	15.69	1.6	20		22.5		25
	55	14.26	1.45	22		24.8		27.5
	60	13.07	1.33	24		27		30
	65	12.07	1.23	26		29.3		23.5
	70	11.21	1.14	28		31.5		35
	75	10.46	1.07	30		33.8		37.5
	80	9.81	1	32		36		40
	90	8.72	0.89	36		40.5		45
	100	7.84	0.8	40		45		50
	125	6.28	0.64	50		56.3		62.5
	150	5.23	0.53	60		67.5		75
25	25	39.2	4	10	392 [40]	11.3	441 [45]	12.5	490 [50]
	30	32.67	3.33	12		13.5		15
	35	28	2.86	14		15.8		17.5
	40	24.5	2.5	16		18		20
	45	21.78	2.22	18		20.3		22.5
	50	19.6	2	20		22.5		25
	55	17.82	1.82	22		24.8		27.5
	60	16.33	1.67	24		27		30
	65	15.08	1.54	26		29.3		23.5
	70	14	1.43	28		31.5		35
	75	13.07	1.33	30		33.8		37.5
	80	12.25	1.25	32		36		40
	90	10.89	1.11	36		40.5		45
	100	9.8	1	40		45		50
	125	7.84	0.8	50		56.3		62.5
	150	6.53	0.67	60		67.5		75
	175	5.6	0.57	70		78.8		87.5
	200	4.9	0.5	80		90		100
27	25	47.11	4.8	10	471 [48]	11.3	530 [54]	12.5	588 [60]
	30	39.26	4	12		13.5		15
	35	33.65	3.43	14		15.8		17.5
	40	29.44	3	16		18		20
	45	26.17	2.67	18		20.3		22.5
	50	23.56	2.4	20		22.5		25
	55	21.41	2.18	22		24.8		27.5
	60	19.63	2	24		27		30
	65	18.12	1.85	26		29.3		23.5
	70	16.83	1.72	28		31.5		35
	75	15.7	1.6	30		33.8		37.5
	80	14.72	1.5	32		36		40
	90	13.09	1.33	36		40.5		45
	100	11.78	1.2	40		45		50
	125	9.42	0.96	50		56.3		62.5
	150	7.85	0.8	60		67.5		75
	175	6.73	0.69	70		78.8		87.5
	200	5.89	0.6	80		90		100
30	25	56.62	5.77	10	569 [58]	11.3	637 [65]	12.5	706 [72]
	30	47.19	4.81	12		13.5		15
	35	40.44	4.12	14		15.8		17.5
	40	35.39	3.61	16		18		20
	45	31.46	3.21	18		20.3		22.5
	50	28.31	2.89	20		22.5		25
	55	25.74	2.62	22		24.8		27.5
	60	23.59	2.41	24		27		30
	65	21.78	2.22	26		29.3		23.5
	70	20.22	2.06	28		31.5		35
	75	18.87	1.92	30		33.8		37.5
	80	17.69	1.8	32		36		40
	90	15.73	1.6	36		40.5		45
	100	14.16	1.44	40		45		50
	125	11.32	1.15	50		56.3		62.5
	150	9.44	0.96	60		67.5		75
	175	8.09	0.82	70		78.8		87.5
	200	7.08	0.72	80		90		100
35	40	47.94	4.89	16	765 [78]	18	863 [88]	20	961 [98]
	45	42.62	4.35	18		20.3		22.5
	50	38.36	3.91	20		22.5		25
	55	34.87	3.56	22		24.8		27.5
	60	31.96	3.62	24		27		30
	65	29.50	3.01	26		29.3		23.5
	70	27.40	2.79	28		31.5		35
	75	25.57	2.61	30		33.8		37.5
	80	23.97	2.44	32		36		40
	90	21.31	2.17	36		40.5		45
	100	19.18	1.96	40		45		50
	125	15.34	1.56	50		56.3		62.5
	150	12.79	1.3	60		67.5		75
	175	10.96	1.12	70		78.8		87.5
	200	9.59	0.98	80		90		100
40	40	62.67	6.39	16	1000 [102]	18	1128 [115]	20	1255 [128]
	45	55.7	5.68	18		20.3		22.5
	50	50.13	5.11	20		22.5		25
	55	45.58	4.65	22		24.8		27.5
	60	41.78	4.26	24		27		30
	65	38.56	3.93	26		29.3		23.5
	70	35.81	3.65	28		31.5		35
	75	33.42	3.41	30		33.8		37.5
	80	31.33	3.2	32		36		40
	90	27.85	2.84	36		40.5		45
	100	25.07	2.56	40		45		50
	125	20.05	2.04	50		56.3		62.5
	150	16.71	1.7	60		67.5		75
	175	14.32	1.46	70		78.8		87.5
	200	12.53	1.28	80		90		100
	225	11.14	1.14	90		101.3		112.5
	250	10.03	1.02	100		112.5		125
	275	9.12	0.93	110		123.8		137.5
	300	8.36	0.85	120		135		150
50	50	78.44	8	20	1569 [160]	22.5	1765 [180]	25	1961 [200]
	55	71.31	7.27	22		24.8		27.5
	60	65.37	6.67	24		27		30
	65	60.34	6.15	26		29.3		23.5
	70	56.03	5.71	28		31.5		35
	75	52.30	5.33	30		33.8		37.5
	80	49.03	5	32		36		40
	90	43.58	4.44	36		40.5		45
	100	39.22	4	40		45		50
	125	31.38	3.2	50		56.3		62.5
	150	26.15	2.67	60		67.5		75
	175	22.41	2.29	70		78.8		87.5
	200	19.61	2	80		90		100
	225	17.43	1.78	90		101.3		112.5
	250	15.69	1.6	100		112.5		125
	275	14.26	1.45	110		123.8		137.5
	300	13.07	1.33	120		135		150
	350	11.21	1.14	140		157.5		175
	400	9.81	1	160		180		200
	450	8.72	0.89	180		202.5		225
	500	7.84	0.8	200		225		250
60	60	94.07	9.59	24	2260 [230]	27	2540 [259]	30	2820 [287.6]
	70	80.63	8.22	28		31.5		35
	80	70.56	7.19	32		36		40
	90	62.72	6.4	36		40.5		45
	100	56.44	5.76	40		45		50
	125	45.16	4.6	50		56.3		62.5
	150	37.63	3.84	60		67.5		75
	175	32.25	3.29	70		78.8		87.5
	200	28.22	2.88	80		90		100
	225	25.09	2.56	90		101.3		112.5
	250	22.58	2.3	100		112.5		125
	275	20.53	2.09	110		123.8		137.5
	300	18.81	1.92	120		135		150
	350	16.13	1.64	140		157.5		175
	400	14.11	1.44	160		180		200
	450	12.54	1.28	180		202.5		225
	500	11.29	1.15	200		225		250
70	70	114.29	11.65	28	3200 [326.3]	31.5	3600 [367]	35	4000 [407.9]
	80	100	10.2	32		36		40
	90	88.89	9.06	36		40.5		45
	100	80	8.16	40		45		50
	125	64	6.53	50		56.3		62.5
	150	53.33	5.44	60		67.5		75
	175	45.71	4.66	70		78.8		87.5
	200	40	4.08	80		90		100
	225	35.56	3.63	90		101.3		112.5
	250	32	3.26	100		112.5		125
	275	29.09	2.97	110		123.8		137.5
	300	26.67	2.72	120		135		150
	350	22.86	2.33	140		157.5		175

Light Duty Spring Compression Data

Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	Spring Constant		Free Length x 32% (1,000,000 cycles)		Free Length x 36% (500,000 cycles)		Free Length x 40% (300,000 cycles)
Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	(N / mm)	(Kgf / mm)	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])
JIS	Blue	Light Duty	8	10	24.53	2.5	3.2	78.5 [8]	3.6	88.3 [9]	4	98.1 [10]
				15	16.35	1.67	4.8		5.4		6
				20	12.26	1.25	6.4		7.2		8
				25	9.81	1	8		9		10
				30	8.18	0.83	9.6		10.8		12
				35	7.01	0.71	11.2		12.6		14
				40	6.13	0.63	12.8		14.4		16
				45	5.45	0.56	14.4		16.2		18
				50	4.91	0.5	16		18		20
				55	4.46	0.45	17.6		19.8		22
				60	4.09	0.42	19.2		21.6		24
				65	3.77	0.38	20.8		23.4		26
				70	3.50	0.36	22.4		25.2		28
				75	3.27	0.33	24		27		30
				80	3.07	0.31	25.6		28.8		32
			10	20	17.71	1.81	6.4	112.8 [11.5]	7.2	127.5 [13]	8	142.2 [14.5]
				25	14.17	1.44	8		9		10
				30	11.81	1.2	9.6		10.8		12
				35	10.12	1.03	11.2		12.6		14
				40	8.85	0.9	12.8		14.4		16
				45	7.87	0.8	14.4		16.2		18
				50	7.08	0.72	16		18		20
				55	6.44	0.66	17.6		19.8		22
				60	5.90	0.6	19.2		21.6		24
				65	5.45	0.56	20.8		23.4		26
				70	5.06	0.52	22.4		25.2		28
				75	4.72	0.48	24		27		30
				80	4.43	0.45	25.6		28.8		32
				90	3.94	0.4	28.8		32.4		36
			12	20	25.88	2.64	6.4	166.7 [17]	7.2	186.3 [19]	8	206 [21]
				25	20.7	2.11	8		9		10
				30	17.25	1.76	9.6		10.8		12
				35	14.79	1.51	11.2		12.6		14
				40	12.94	1.32	12.8		14.4		16
				45	11.5	1.17	14.4		16.2		18
				50	10.35	1.06	16		18		20
				55	9.41	0.96	17.6		19.8		22
				60	8.63	0.88	19.2		21.6		24
				65	7.96	0.81	20.8		23.4		26
				70	7.39	0.75	22.4		25.2		28
				75	6.9	0.70	24		27		30
				80	6.47	0.66	25.6		28.8		32
				90	5.75	0.59	28.8		32.4		36
			14	25	27.22	2.78	8	216 [22]	9	245 [25]	10	275 [28]
				30	22.69	2.31	9.6		10.8		12
				35	19.44	1.98	11.2		12.6		14
				40	17.01	1.73	12.8		14.4		16
				45	15.12	1.54	14.4		16.2		18
				50	13.61	1.39	16		18		20
				55	12.37	1.26	17.6		19.8		22
				60	11.34	1.16	19.2		21.6		24
				65	10.47	1.07	20.8		23.4		26
				70	9.72	0.99	22.4		25.2		28
				75	9.07	0.93	24		27		30
				80	8.51	0.87	25.6		28.8		32
				90	7.56	0.77	28.8		32.4		36
				100	6.81	0.69	32		36		40
			16	25	34.89	3.56	8	275 [28]	9	314 [32]	10	343 [35]
				30	29.07	2.96	9.6		10.8		12
				35	24.92	2.54	11.2		12.6		14
				40	21.81	2.22	12.8		14.4		16
				45	19.38	1.98	14.4		16.2		18
				50	17.44	1.78	16		18		20
				55	15.86	1.62	17.6		19.8		22
60	14.54	1.48		19.2	21.6	24
65	13.42	1.37		20.8	23.4	26
70	12.46	1.27		22.4	25.2	28
75	11.63	1.19		24	27	30
80	10.9	1.11		25.6	28.8	32
90	9.69	0.99		28.8	32.4	36
100	8.72	0.89		32	36	40
125	6.98	0.71		40	45	50
18	25	42.44	4.33	8	333 [34]	9	382 [39]	10	422 [43]
	30	35.37	3.61	9.6		10.8		12
	35	30.32	3.09	11.2		12.6		14
	40	26.53	2.71	12.8		14.4		16
	45	23.58	2.4	14.4		16.2		18
	50	21.22	2.16	16		18		20
	55	19.29	1.97	17.6		19.8		22
	60	17.69	1.8	19.2		21.6		24
	65	16.32	1.66	20.8		23.4		26
	70	15.16	1.55	22.4		25.2		28
	75	14.15	1.44	24		27		30
	80	13.26	1.35	25.6		28.8		32
	90	11.79	1.2	28.8		32.4		36
	100	10.61	1.08	32		36		40
	125	8.49	0.87	40		45		50
20	25	53.44	5.45	8	422 [43]	9	481 [49]	10	530 [54]
	30	44.54	4.54	9.6		10.8		12
	35	38.17	3.89	11.2		12.6		14
	40	33.4	3.41	12.8		14.4		16
	45	29.69	3.03	14.4		16.2		18
	50	26.72	2.72	16		18		20
	55	24.29	2.48	17.6		19.8		22
	60	22.27	2.27	19.2		21.6		24
	65	20.56	2.1	20.8		23.4		26
	70	19.09	1.95	22.4		25.2		28
	75	17.81	1.82	24		27		30
	80	16.7	1.7	25.6		28.8		32
	90	14.85	1.51	28.8		32.4		36
	100	13.36	1.36	32		36		40
	125	10.69	1.09	40		45		50
	150	8.91	0.91	48		54		60
22	25	65.33	6.66	8	530 [54]	9	588 [60]	10	657 [67]
	30	54.44	5.55	9.6		10.8		12
	35	46.67	4.76	11.2		12.6		14
	40	40.83	4.16	12.8		14.4		16
	45	36.3	3.7	14.4		16.2		18
	50	32.67	3.33	16		18		20
	55	29.7	3.03	17.6		19.8		22
	60	27.22	2.78	19.2		21.6		24
	65	25.13	2.56	20.8		23.4		26
	70	23.33	2.38	22.4		25.2		28
	75	21.78	2.22	24		27		30
	80	20.42	2.08	25.6		28.8		32
	90	18.15	1.85	28.8		32.4		36
	100	16.33	1.67	32		36		40
	125	13.07	1.33	40		45		50
	150	10.89	1.11	48		54		60
25	25	82.78	8.44	8	657 [67]	9	745 [76]	10	824 [84]
	30	68.98	7.03	9.6		10.8		12
	35	59.13	6.03	11.2		12.6		14
	40	51.74	5.28	12.8		14.4		16
	45	45.99	4.69	14.4		16.2		18
	50	41.39	4.22	16		18		20
	55	37.63	3.84	17.6		19.8		22
	60	34.49	3.52	19.2		21.6		24
	65	31.84	3.25	20.8		23.4		26
	70	29.56	3.01	22.4		25.2		28
	75	27.59	2.81	24		27		30
	80	25.87	2.64	25.6		28.8		32
	90	22.99	2.34	28.8		32.4		36
	100	20.69	2.11	32		36		40
	125	16.56	1.69	40		45		50
	150	13.8	1.41	48		54		60
	175	11.83	1.21	56		63		70
	200	10.35	1.06	64		72		80
27	25	98.11	10	8	785 [80]	9	883 [90]	10	981 [100]
	30	81.76	8.34	9.6		10.8		12
	35	70.08	7.15	11.2		12.6		14
	40	61.32	6.25	12.8		14.4		16
	45	54.51	5.56	14.4		16.2		18
	50	49.06	5	16		18		20
	55	44.6	4.55	17.6		19.8		22
	60	40.88	4.17	19.2		21.6		24
	65	37.74	3.85	20.8		23.4		26
	70	35.04	3.57	22.4		25.2		28
	75	32.7	3.33	24		27		30
	80	30.66	3.13	25.6		28.8		32
	90	27.25	2.78	28.8		32.4		36
	100	24.53	2.5	32		36		40
	125	19.62	2	40		45		50
	150	16.35	1.67	48		54		60
	175	14.02	1.43	56		63		70
	200	12.26	1.25	64		72		80
30	25	118.78	12.11	8	951 [97]	9	1069 [109]	10	1187 [121]
	30	98.98	10.09	9.6		10.8		12
	35	84.84	8.65	11.2		12.6		14
	40	74.24	7.57	12.8		14.4		16
	45	65.99	6.73	14.4		16.2		18
	50	59.39	6.06	16		18		20
	55	53.99	5.51	17.6		19.8		22
	60	49.49	5.05	19.2		21.6		24
	65	45.68	4.66	20.8		23.4		26
	70	42.42	4.33	22.4		25.2		28
	75	39.59	4.04	24		27		30
	80	37.12	3.78	25.6		28.8		32
	90	32.99	3.36	28.8		32.4		36
	100	29.69	3.03	32		36		40
	125	23.76	2.42	40		45		50
	150	19.80	2.02	48		54		60
	175	16.97	1.73	56		63		70
	200	14.85	1.51	64		72		80
35	40	101.46	10.35	12.8	1295 [132.1]	14.4	1461 [149]	16	1618 [165]
	45	90.19	9.2	14.4		16.2		18
	50	81.17	8.28	16		18		20
	55	73.79	7.52	17.6		19.8		22
	60	67.64	6.9	19.2		21.6		24
	65	62.44	6.37	20.8		23.4		26
	70	57.98	5.91	22.4		25.2		28
	75	54.11	5.52	24		27		30
	80	50.73	5.17	25.6		28.8		32
	90	45.09	4.6	28.8		32.4		36
	100	40.58	4.14	32		36		40
	125	32.47	3.31	40		45		50
	150	27.06	2.76	48		54		60
	175	23.19	2.36	56		63		70
	200	20.29	2.07	64		72		80
40	40	132.15	13.48	12.8	1697 [173]	14.4	1903 [194.1]	16	2120 [216.2]
	45	117.47	11.98	14.4		16.2		18
	50	105.72	10.78	16		18		20
	55	96.11	9.8	17.6		19.8		22
	60	88.1	8.98	19.2		21.6		24
	65	81.32	8.29	20.8		23.4		26
	70	75.52	7.7	22.4		25.2		28
	75	70.48	7.19	24		27		30
	80	66.08	6.74	25.6		28.8		32
	90	58.73	5.99	28.8		32.4		36
	100	52.86	5.39	32		36		40
	125	42.29	4.31	40		45		50
	150	35.24	3.59	48		54		60
	175	30.21	3.08	56		63		70
	200	26.43	2.7	64		72		80
	225	23.49	2.4	72		81		90
	250	21.14	2.16	80		90		100
	275	19.22	1.96	88		99		110
	300	17.62	1.8	96		108		120
50	50	165.56	16.88	16	2650 [270.2]	18	2980 [303.9]	20	3310 [337.5]
	55	150.51	15.35	17.6		19.8		22
	60	137.96	14.07	19.2		21.6		24
	65	127.35	12.99	20.8		23.4		26
	70	118.25	12.06	22.4		25.2		28
	75	110.37	11.25	24		27		30
	80	103.47	10.55	25.6		28.8		32
	90	91.98	9.38	28.8		32.4		36
	100	82.78	8.44	32		36		40
	125	66.22	6.75	40		45		50
	150	55.19	5.63	48		54		60
	175	47.3	4.82	56		63		70
	200	41.39	4.22	64		72		80
	225	36.79	3.75	72		81		90
	250	33.11	3.38	80		90		100
	275	30.1	3.07	88		99		110
	300	27.59	2.81	96		108		120
	350	23.65	2.41	112		126		140
	400	20.69	2.11	128		144		160
	450	18.4	1.88	144		162		180
	500	16.56	169	160		180		200
60	60	198.61	20.25	19.2	3810 [388.5]	21.6	4290 [437.5]	24	4770 [486.4]
	70	170.24	17.36	22.4		25.2		28
	80	148.96	15.19	25.6		28.8		32
	90	132.41	13.5	28.8		32.4		36
	100	119.17	12.15	32		36		40
	125	95.33	9.72	40		45		50
	150	79.44	8.1	48		54		60
	175	68.1	6.94	56		63		70
	200	59.58	6.08	64		72		80
	225	52.96	5.4	72		81		90
	250	47.67	4.86	80		90		100
	275	43.33	4.42	88		99		110
	300	39.72	4.05	96		108		120
	350	34.05	3.47	112		126		140
	400	29.79	3.04	128		144		160
	450	26.48	2.7	144		162		180
	500	23.83	2.43	160		180		200
70	70	217.86	22.22	22.4	4880 [497.6]	25.2	5490 [559.8]	28	6100 [622]
	80	190.63	19.44	25.6		28.8		32
	90	169.44	17.28	28.8		32.4		36
	100	152.5	15.55	32		36		40
	125	122	12.44	40		45		50
	150	101.67	10.37	48		54		60
	175	87.14	8.89	56		63		70
	200	76.25	7.78	64		72		80
	225	67.78	6.91	72		81		90
	250	61	6.22	80		90		100
	275	55.45	5.65	88		99		110
	300	50.83	5.18	96		108		120
	350	43.57	4.44	112		126		140

Medium Duty Spring Compression Data

Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	Spring Constant		Free Length x 25.6% (1,000,000 cycles)		Free Length x 28.8% (500,000 cycles)		Free Length x 32% (300,000 cycles)
Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	(N / mm)	(Kgf / mm)	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])
JIS	Red	Medium Duty	8	10	42.57	4.34	2.6	107.9 [11]	2.9	122.6 [12.5]	3.2	137.3 [14]
				15	28.38	2.89	3.8		4.3		4.8
				20	21.28	2.17	5.1		5.8		6.4
				25	17.03	1.74	6.4		7.2		8
				30	14.19	1.45	7.7		8.6		9.6
				35	12.16	1.24	9		10.1		11.2
				40	10.64	1.09	10.2		11.5		12.8
				45	9.46	0.96	11.5		13		14.4
				50	8.51	0.87	12.8		14.4		16
				55	7.74	0.79	14.1		15.8		17.6
				60	7.09	0.72	15.4		17.3		19.2
				65	6.55	0.67	16.6		18.7		20.8
				70	6.08	0.62	17.9		20.2		22.4
				75	5.68	0.58	19.2		21.6		24
				80	5.32	0.54	20.5		23		25.6
			10	20	30.64	3.12	5.1	156.9 [16]	5.8	176.5 [18]	6.4	196.1 [20]
				25	24.51	2.5	6.4		7.2		8
				30	20.43	2.08	7.7		8.6		9.6
				35	17.51	1.79	9		10.1		11.2
				40	15.32	1.56	10.2		11.5		12.8
				45	13.62	1.39	11.5		13		14.4
				50	12.26	1.25	12.8		14.4		16
				55	11.14	1.14	14.1		15.8		17.6
				60	10.21	1.04	15.4		17.3		19.2
				65	9.43	0.96	16.6		18.7		20.8
				70	8.75	0.89	17.9		20.2		22.4
				75	8.17	0.83	19.2		21.6		24
				80	7.66	0.78	20.5		23		25.6
				90	6.81	0.69	23		25.9		28.8
			12	20	44.27	4.51	5.1	226 [23]	5.8	255 [26]	6.4	284 [29]
				25	35.42	3.61	6.4		7.2		8
				30	29.51	3.01	7.7		8.6		9.6
				35	25.3	2.58	9		10.1		11.2
				40	22.14	2.26	10.2		11.5		12.8
				45	19.68	2.01	11.5		13		14.4
				50	17.71	1.81	12.8		14.4		16
				55	16.1	1.64	14.1		15.8		17.6
				60	14.76	1.5	15.4		17.3		19.2
				65	13.62	1.39	16.6		18.7		20.8
				70	12.65	1.29	17.9		20.2		22.4
				75	11.81	1.2	19.2		21.6		24
				80	11.07	1.13	20.5		23		25.6
				90	9.84	1	23		25.9		28.8
			14	25	47.64	4.86	6.4	304 [31]	7.2	343 [35]	8	383 [29.1]
				30	39.7	4.05	7.7		8.6		9.6
				35	34.03	3.47	9		10.1		11.2
				40	29.77	3.04	10.2		11.5		12.8
				45	26.47	2.7	11.5		13		14.4
				50	23.82	2.43	12.8		14.4		16
				55	21.65	2.21	14.1		15.8		17.6
				60	19.85	2.02	15.4		17.3		19.2
				65	18.32	1.87	16.6		18.7		20.8
				70	17.01	1.73	17.9		20.2		22.4
				75	15.88	1.62	19.2		21.6		24
				80	14.89	1.52	20.5		23		25.6
				90	13.23	1.35	23		25.9		28.8
				100	11.91	1.21	25.6		28.8		32
			16	25	62.64	6.39	6.4	402 [41]	7.2	451 [46]	8	500 [51]
				30	52.2	5.32	7.7		8.6		9.6
				35	44.74	4.56	9		10.1		11.2
				40	39.15	3.99	10.2		11.5		12.8
				45	34.8	3.55	11.5		13		14.4
				50	31.32	3.19	12.8		14.4		16
				55	28.47	2.9	14.1		15.8		17.6
60	26.1	2.66		15.4	17.3	19.2
65	24.09	2.46		16.6	18.7	20.8
70	22.37	2.28		17.9	20.2	22.4
75	20.88	2.13		19.2	21.6	24
80	19.57	2		20.5	23	25.6
90	17.4	1.77		23	25.9	28.8
100	15.66	1.6		25.6	28.8	32
125	12.53	1.28		32	36	40
18	25	79.03	8.06	6.4	510 [52]	7.2	569 [58]	8	637 [65]
	30	65.86	6.72	7.7		8.6		9.6
	35	56.45	5.76	9		10.1		11.2
	40	49.39	5.04	10.2		11.5		12.8
	45	43.9	4.48	11.5		13		14.4
	50	39.51	4.03	12.8		14.4		16
	55	35.92	3.66	14.1		15.8		17.6
	60	32.93	3.36	15.4		17.3		19.2
	65	30.4	3.1	16.6		18.7		20.8
	70	28.22	2.88	17.9		20.2		22.4
	75	26.34	2.69	19.2		21.6		24
	80	24.7	2.52	20.5		23		25.6
	90	21.95	2.24	23		25.9		28.8
	100	19.76	2.01	25.6		28.8		32
	125	15.81	1.61	32		36		40
20	25	98.06	10	6.4	628 [64]	7.2	706 [72]	8	785 [80]
	30	81.71	8.33	7.7		8.6		9.6
	35	70.04	7.14	9		10.1		11.2
	40	61.28	6.25	10.2		11.5		12.8
	45	54.48	5.55	11.5		13		14.4
	50	49.03	5	12.8		14.4		16
	55	44.57	4.54	14.1		15.8		17.6
	60	40.86	4.17	15.4		17.3		19.2
	65	37.71	3.85	16.6		18.7		20.8
	70	35.02	3.57	17.9		20.2		22.4
	75	32.69	3.33	19.2		21.6		24
	80	30.64	3.12	20.5		23		25.6
	90	27.24	2.78	23		25.9		28.8
	100	24.51	2.5	25.6		28.8		32
	125	19.61	2	32		36		40
	150	16.34	1.67	38.4		43.2		48
22	25	118.47	12.08	6.4	765 [78]	7.2	853 [87]	8	951 [97]
	30	98.73	10.07	7.7		8.6		9.6
	35	84.62	8.63	9		10.1		11.2
	40	74.05	7.55	10.2		11.5		12.8
	45	65.82	6.71	11.5		13		14.4
	50	59.24	6.04	12.8		14.4		16
	55	53.85	5.49	14.1		15.8		17.6
	60	49.36	5.03	15.4		17.3		19.2
	65	45.57	4.65	16.6		18.7		20.8
	70	42.31	4.31	17.9		20.2		22.4
	75	39.49	4.03	19.2		21.6		24
	80	37.02	3.78	20.5		23		25.6
	90	32.91	3.36	23		25.9		28.8
	100	29.62	3.02	25.6		28.8		32
	125	23.69	2.42	32		36		40
	150	19.75	2.01	38.4		43.2		48
25	25	152.5	15.55	6.4	981 [100]	7.2	1098 [112]	8	1226 [125]
	30	127.08	12.96	7.7		8.6		9.6
	35	108.93	11.11	9		10.1		11.2
	40	95.31	9.72	10.2		11.5		12.8
	45	84.72	8.64	11.5		13		14.4
	50	76.25	7.78	12.8		14.4		16
	55	69.32	7.07	14.1		15.8		17.6
	60	63.54	6.48	15.4		17.3		19.2
	65	58.65	5.98	16.6		18.7		20.8
	70	54.46	5.55	17.9		20.2		22.4
	75	50.83	5.18	19.2		21.6		24
	80	47.66	4.86	20.5		23		25.6
	90	42.36	4.32	23		25.9		28.8
	100	38.13	3.89	25.6		28.8		32
	125	30.5	3.11	32		36		40
	150	25.42	2.59	38.4		43.2		48
	175	21.79	2.22	44.8		50.4		56
	200	19.06	1.94	51.2		57.6		64
27	25	178.47	18.2	6.4	1147 [117]	7.2	1285 [131]	8	1432 [146]
	30	148.73	15.17	7.7		8.6		9.6
	35	127.48	13	9		10.1		11.2
	40	111.55	11.37	10.2		11.5		12.8
	45	99.15	10.11	11.5		13		14.4
	50	89.24	9.1	12.8		14.4		16
	55	81.12	8.27	14.1		15.8		17.6
	60	74.36	7.58	15.4		17.3		19.2
	65	68.64	7	16.6		18.7		20.8
	70	63.74	6.5	17.9		20.2		22.4
	75	59.49	6.07	19.2		21.6		24
	80	55.77	5.69	20.5		23		25.6
	90	49.58	5.06	23		25.9		28.8
	100	44.62	4.55	25.6		28.8		32
	125	35.69	3.64	32		36		40
	150	29.75	3.03	38.4		43.2		48
	175	25.5	2.6	44.8		50.4		56
	200	22.31	2.27	51.2		57.6		64
30	25	219.31	22.36	6.4	1412 [144]	7.2	1579 [161]	8	1765 [180]
	30	182.75	18.64	7.7		8.6		9.6
	35	156.65	15.97	9		10.1		11.2
	40	137.07	13.98	10.2		11.5		12.8
	45	121.84	12.42	11.5		13		14.4
	50	109.65	11.18	12.8		14.4		16
	55	99.68	10.16	14.1		15.8		17.6
	60	91.38	9.32	15.4		17.3		19.2
	65	84.35	8.6	16.6		18.7		20.8
	70	78.32	7.99	17.9		20.2		22.4
	75	73.1	7.45	19.2		21.6		24
	80	68.53	6.99	20.5		23		25.6
	90	60.92	6.21	23		25.9		28.8
	100	54.83	5.59	25.6		28.8		32
	125	43.86	4.47	32		36		40
	150	36.55	3.73	38.4		43.2		48
	175	31.33	3.19	44.8		50.4		56
	200	27.41	2.8	51.2		57.6		64
35	40	187.5	19.12	10.2	1912 [195]	11.5	2160 [220.3]	12.8	2400 [244.7]
	45	166.67	17	11.5		13		14.4
	50	150	15.3	12.8		14.4		16
	55	136.36	13.91	14.1		15.8		17.6
	60	125	12.75	15.4		17.3		19.2
	65	115.38	11.77	16.6		18.7		20.8
	70	107.14	10.93	17.9		20.2		22.4
	75	100	10.20	19.2		21.6		24
	80	93.75	9.56	20.5		23		25.6
	90	83.33	8.5	23		25.9		28.8
	100	75	7.65	25.6		28.8		32
	125	60	6.12	32		36		40
	150	50	5.1	38.4		43.2		48
	175	42.86	4.37	44.8		50.4		56
	200	37.5	3.82	51.2		57.6		64
40	40	244.79	24.96	10.2	2510 [256]	11.5	2820 [287.6]	12.8	3140 [320.2]
	45	217.59	22.19	11.5		13		14.4
	50	195.83	19.97	12.8		14.4		16
	55	178.03	18.15	14.1		15.8		17.6
	60	163.19	16.64	15.4		17.3		19.2
	65	150.64	15.36	16.6		18.7		20.8
	70	139.88	14.26	17.9		20.2		22.4
	75	130.56	13.31	19.2		21.6		24
	80	122.4	12.48	20.5		23		25.6
	90	108.8	11.09	23		25.9		28.8
	100	97.92	9.98	25.6		28.8		32
	125	78.33	7.99	32		36		40
	150	65.28	6.66	38.4		43.2		48
	175	55.95	5.71	44.8		50.4		56
	200	48.96	4.99	51.2		57.6		64
	225	43.52	4.44	57.6		64.8		72
	250	39.17	3.99	64		72		80
	275	35.61	3.63	70.4		79.2		88
	300	32.64	3.33	76.8		86.4		96
50	50	306.25	31.23	12.8	3920 [399.7]	14.4	4410 [449.7]	16	4900 [499.7]
	55	278.41	28.39	14.1		15.8		17.6
	60	255.21	26.02	15.4		17.3		19.2
	65	235.58	24.02	16.6		18.7		20.8
	70	218.75	22.31	17.9		20.2		22.4
	75	204.17	20.82	19.2		21.6		24
	80	191.41	19.52	20.5		23		25.6
	90	170.14	17.35	23		25.9		28.8
	100	153.13	15.61	25.6		28.8		32
	125	122.5	12.49	32		36		40
	150	102.08	10.41	38.4		43.2		48
	175	87.5	8.92	44.8		50.4		56
	200	76.56	7.81	51.2		57.6		64
	225	68.06	6.94	57.6		64.8		72
	250	61.25	6.25	64		72		80
	275	55.68	5.68	70.4		79.2		88
	300	51.04	5.2	76.8		86.4		96
	350	43.75	4.46	89.6		100.8		112
60	60	367.48	37.47	15.4	5640 [575.1]	17.3	6350 [647.5]	19.2	7060 [719.9]
	70	314.98	32.12	17.9		20.2		22.4
	80	275.61	28.1	20.5		23		25.6
	90	244.98	24.98	23		25.9		28.8
	100	220.49	22.48	25.6		28.8		32
	125	176.39	17.99	32		36		40
	150	146.99	14.99	38.4		43.2		48
	175	125.99	12.85	44.8		50.4		56
	200	110.24	11.24	51.2		57.6		64
	225	97.99	9.99	57.6		64.8		72
	250	88.19	8.99	64		72		80
	275	80.18	8.18	70.4		79.2		88
	300	73.5	7.49	76.8		86.4		96
	350	63	6.42	89.6		100.8		112
70	70	379.46	38.69	17.9	6800 [693.4]	20.2	7650 [780.1]	22.4	8500 [866.8]
	80	332.03	33.86	20.5		23		25.6
	90	295.14	30.1	23		25.9		28.8
	100	265.63	27.09	25.6		28.8		32
	125	212.5	21.67	32		36		40
	150	177.08	18.06	38.4		43.2		48
	175	151.79	15.48	44.8		50.4		56
	200	132.81	13.54	51.2		57.6		64
	225	118.06	12.04	57.6		64.8		72
	250	106.25	10.83	64		72		80
	275	96.59	9.85	70.4		79.2		88
	300	88.54	9.03	76.8		86.4		96
	350	75.89	7.74	89.6		100.8		112

Heavy Duty Spring Compression Data

Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	Spring Constant		Free Length x 19.2% (1,000,000 cycles)		Free Length x 21.6% (500,000 cycles)		Free Length x 24% (300,000 cycles)
Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	(N / mm)	(Kgf / mm)	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])
JIS	Green	Heavy Duty	8	10	86.25	8.8	1.9	166.7 [17]	2.2	186.3 [19]	2.4	206 [21]
				15	57.5	5.86	2.9		3.2		3.6
				20	43.13	4.4	3.8		4.3		4.8
				25	34.5	3.52	4.8		5.4		6
				30	28.75	2.93	5.8		6.5		7.2
				35	24.64	2.51	6.7		7.6		8.4
				40	21.56	2.2	7.7		8.6		9.6
				45	19.17	1.95	8.6		9.7		10.8
				50	17.25	1.76	9.6		10.8		12
				55	15.68	1.6	10.6		11.9		13.2
				60	14.38	1.47	11.5		13		14.4
				65	13.27	1.35	12.5		14		15.6
				70	12.32	1.26	13.4		15.1		16.8
				75	11.5	1.17	14.4		16.2		18
				80	10.78	1.1	15.4		17.3		19.2
			10	20	61.34	6.26	3.8	235 [24]	4.3	265 [27]	4.8	294 [30]
				25	49.07	5	4.8		5.4		6
				30	40.9	4.17	5.8		6.5		7.2
				35	35.05	3.57	6.7		7.6		8.4
				40	30.67	3.13	7.7		8.6		9.6
				45	27.26	2.78	8.6		9.7		10.8
				50	24.54	2.5	9.6		10.8		12
				55	22.31	2.27	10.6		11.9		13.2
				60	20.45	2.09	11.5		13		14.4
				65	18.87	2.09	12.5		14		15.6
				70	17.53	1.79	13.4		15.1		16.8
				75	16.36	1.67	14.4		16.2		18
				80	15.34	1.56	15.4		17.3		19.2
				90	13.63	1.39	17.3		19.4		21.6
			12	20	86.34	8.8	3.8	333 [34]	4.3	373 [38]	4.8	422 [43]
				25	69.07	7.04	4.8		5.4		6
				30	57.56	5.87	5.8		6.5		7.2
				35	49.34	5.03	6.7		7.6		8.4
				40	43.17	4.4	7.7		8.6		9.6
				45	38.37	3.91	8.6		9.7		10.8
				50	34.54	3.52	9.6		10.8		12
				55	31.4	3.2	10.6		11.9		13.2
				60	28.78	2.93	11.5		13		14.4
				65	26.57	2.71	12.5		14		15.6
				70	24.67	2.52	13.4		15.1		16.8
				75	23.02	2.35	14.4		16.2		18
				80	21.59	2.2	15.4		17.3		19.2
				90	19.19	1.96	17.3		19.4		21.6
			14	25	96.3	9.82	4.8	461 [47]	5.4	520 [53]	6	579 [59]
				30	80.25	8.18	5.8		6.5		7.2
				35	68.78	7.01	6.7		7.6		8.4
				40	60.19	6.14	7.7		8.6		9.6
				45	53.5	5.46	8.6		9.7		10.8
				50	48.15	4.91	9.6		10.8		12
				55	43.77	4.46	10.6		11.9		13.2
				60	40.12	4.09	11.5		13		14.4
				65	37.04	3.78	12.5		14		15.6
				70	34.39	3.51	13.4		15.1		16.8
				75	32.1	3.71	14.4		16.2		18
				80	30.09	3.07	15.4		17.3		19.2
				90	26.75	2.73	17.3		19.4		21.6
				100	24.07	2.45	19.2		21.6		24
			16	25	125.37	12.78	4.8	608 [62]	5.4	677 [69]	6	755 [77]
				30	104.48	10.65	5.8		6.5		7.2
				35	89.55	9.13	6.7		7.6		8.4
				40	78.36	7.99	7.7		8.6		9.6
				45	69.65	7.1	8.6		9.7		10.8
				50	62.69	6.39	9.6		10.8		12
				55	56.99	5.81	10.6		11.9		13.2
60	52.24	5.33		11.5	13	14.4
65	48.22	4.92		12.5	14	15.6
70	44.78	4.57		13.4	15.1	16.8
75	41.79	4.26		14.4	16.2	18
80	39.18	4		15.4	17.3	19.2
90	34.83	3.55		17.3	19.4	21.6
100	31.34	3.2		19.2	21.6	24
125	25.07	2.56		24	27	30
18	25	157.96	16.11	4.8	765 [78]	5.4	853 [87]	6	951 [97]
	30	131.64	13.42	5.8		6.5		7.2
	35	112.83	11.51	6.7		7.6		8.4
	40	98.73	10.07	7.7		8.6		9.6
	45	87.76	8.95	8.6		9.7		10.8
	50	78.98	8.05	9.6		10.8		12
	55	71.8	7.32	10.6		11.9		13.2
	60	65.82	6.71	11.5		13		14.4
	65	60.75	6.2	12.5		14		15.6
	70	56.42	5.75	13.4		15.1		16.8
	75	52.65	5.37	14.4		16.2		18
	80	49.36	5.03	15.4		17.3		19.2
	90	43.88	4.47	17.3		19.4		21.6
	100	39.49	4.03	19.2		21.6		24
	125	31.59	3.22	24		27		30
20	25	196.11	20	4.8	941 [96]	5.4	1059 [108]	6	1177 [120]
	30	163.43	16.66	5.8		6.5		7.2
	35	140.08	14.28	6.7		7.6		8.4
	40	122.57	12.5	7.7		8.6		9.6
	45	108.95	11.11	8.6		9.7		10.8
	50	98.06	10	9.6		10.8		12
	55	89.14	9.09	10.6		11.9		13.2
	60	81.71	8.33	11.5		13		14.4
	65	75.43	7.69	12.5		14		15.6
	70	70.04	7.14	13.4		15.1		16.8
	75	65.37	6.67	14.4		16.2		18
	80	61.28	6.25	15.4		17.3		19.2
	90	54.48	5.55	17.3		19.4		21.6
	100	49.03	5	19.2		21.6		24
	125	39.22	4	24		27		30
	150	32.69	3.33	28.8		32.4		36
22	25	236.11	24.08	4.8	1138 [116]	5.4	1275 [130]	6	1422 [145]
	30	196.76	20.06	5.8		6.5		7.2
	35	168.65	17.2	6.7		7.6		8.4
	40	147.57	15.05	7.7		8.6		9.6
	45	131.17	13.38	8.6		9.7		10.8
	50	118.06	12.04	9.6		10.8		12
	55	107.32	10.94	10.6		11.9		13.2
	60	98.38	10.03	11.5		13		14.4
	65	90.81	9.26	12.5		14		15.6
	70	84.33	8.6	13.4		15.1		16.8
	75	78.7	8.03	14.4		16.2		18
	80	73.78	7.52	15.4		17.3		19.2
	90	65.59	6.69	17.3		19.4		21.6
	100	59.03	6.02	19.2		21.6		24
	125	47.22	4.82	24		27		30
	150	39.35	4.01	28.8		32.4		36
25	25	306.85	31.29	4.8	1471 [150]	5.4	1657 [169]	6	1834 [187]
	30	255.71	26.08	5.8		6.5		7.2
	35	219.18	22.35	6.7		7.6		8.4
	40	191.78	19.56	7.7		8.6		9.6
	45	170.47	17.38	8.6		9.7		10.8
	50	153.43	15.65	9.6		10.8		12
	55	139.48	14.22	10.6		11.9		13.2
	60	127.85	13.04	11.5		13		14.4
	65	118.02	12.03	12.5		14		15.6
	70	109.59	11.18	13.4		15.1		16.8
	75	102.28	10.43	14.4		16.2		18
	80	95.89	9.78	15.4		17.3		19.2
	90	85.24	8.69	17.3		19.4		21.6
	100	76.71	7.82	19.2		21.6		24
	125	61.37	6.26	24		27		30
	150	51.14	5.22	28.8		32.4		36
	175	43.84	4.47	33.6		37.8		42
	200	38.36	3.91	38.4		43.2		48
27	25	357.78	36.48	4.8	1716 [175]	5.4	1932 [197]	6	2150 [219.2]
	30	298.15	30.4	5.8		6.5		7.2
	35	255.56	26.06	6.7		7.6		8.4
	40	223.61	22.8	7.7		8.6		9.6
	45	198.77	20.27	8.6		9.7		10.8
	50	178.89	18.24	9.6		10.8		12
	55	162.63	16.58	10.6		11.9		13.2
	60	149.07	15.2	11.5		13		14.4
	65	137.61	14.03	12.5		14		15.6
	70	127.78	13.03	13.4		15.1		16.8
	75	119.26	12.16	14.4		16.2		18
	80	111.81	11.4	15.4		17.3		19.2
	90	99.38	10.13	17.3		19.4		21.6
	100	89.44	9.12	19.2		21.6		24
	125	71.56	7.3	24		27		30
	150	59.63	6.08	28.8		32.4		36
	175	51.11	5.21	33.6		37.8		42
	200	44.72	4.56	38.4		43.2		48
30	25	440.74	44.94	4.8	2120 [216.2]	5.4	2380 [242.7]	6	2648 [270]
	30	367.28	37.45	5.8		6.5		7.2
	35	314.81	32.1	6.7		7.6		8.4
	40	275.46	28.09	7.7		8.6		9.6
	45	244.86	24.97	8.6		9.7		10.8
	50	220.37	22.47	9.6		10.8		12
	55	200.34	20.43	10.6		11.9		13.2
	60	183.64	18.73	11.5		13		14.4
	65	169.52	17.29	12.5		14		15.6
	70	157.41	16.05	13.4		15.1		16.8
	75	146.91	14.98	14.4		16.2		18
	80	137.73	14.04	15.4		17.3		19.2
	90	122.43	12.48	17.3		19.4		21.6
	100	110.19	11.24	19.2		21.6		24
	125	88.15	8.99	24		27		30
	150	73.46	7.49	28.8		32.4		36
	175	62.96	6.42	33.6		37.8		42
	200	55.09	5.62	38.4		43.2		48
35	40	375	38.24	7.7	2870 [292.7]	8.6	3240 [330.4]	9.6	3600 [367.1]
	45	333.33	33.99	8.6		9.7		10.8
	50	300	30.59	9.6		10.8		12
	55	272.73	27.81	10.6		11.9		13.2
	60	250	25.49	11.5		13		14.4
	65	230.77	23.53	12.5		14		15.6
	70	214.29	21.85	13.4		15.1		16.8
	75	200	20.39	14.4		16.2		18
	80	187.5	19.12	15.4		17.3		19.2
	90	166.67	17	17.3		19.4		21.6
	100	150	15.3	19.2		21.6		24
	125	120	12.24	24		27		30
	150	100	10.2	28.8		32.4		36
	175	85.71	8.74	33.6		37.8		42
	200	75	7.65	38.4		43.2		48
40	40	490.74	50.04	7.7	3770 [384.4]	8.6	4240 [432.4]	9.6	4710 [480.3]
	45	436.21	44.48	8.6		9.7		10.8
	50	392.59	40.03	9.6		10.8		12
	55	356.9	36.39	10.6		11.9		13.2
	60	327.16	33.36	11.5		13		14.4
	65	301.99	30.79	12.5		14		15.6
	70	280.42	28.6	13.4		15.1		16.8
	75	261.73	26.69	14.4		16.2		18
	80	245.37	25.02	15.4		17.3		19.2
	90	218.11	22.24	17.3		19.4		21.6
	100	196.3	20.02	19.2		21.6		24
	125	157.04	16.01	24		27		30
	150	130.86	13.34	28.8		32.4		36
	175	112.17	11.44	33.6		37.8		42
	200	98.15	10.01	38.4		43.2		48
	225	87.24	8.9	43.2		48.6		54
	250	78.52	8.01	48		54		60
	275	71.38	7.28	52.8		59.4		66
	300	65.43	6.67	57.6		64.8		72
50	50	612.96	62.5	9.6	5880 [599.6]	10.8	6620 [675.1]	12	7360 [750.5]
	55	557.24	56.82	10.6		11.9		13.2
	60	510.8	52.09	11.5		13		14.4
	65	471.51	48.08	12.5		14		15.6
	70	437.83	44.65	13.4		15.1		16.8
	75	408.64	41.67	14.4		16.2		18
	80	383.1	39.07	15.4		17.3		19.2
	90	340.53	34.72	17.3		19.4		21.6
	100	306.48	31.25	19.2		21.6		24
	125	245.19	25	24		27		30
	150	204.32	20.83	28.8		32.4		36
	175	175.13	17.86	33.6		37.8		42
	200	153.24	15.63	38.4		43.2		48
	225	136.21	13.89	43.2		48.6		54
	250	122.59	12.5	48		54		60
	275	111.45	11.36	52.8		59.4		66
	300	102.16	10.42	57.6		64.8		72
	350	87.57	8.93	67.2		75.6		84
60	60	736.11	75.06	11.5	8470 [863.7]	13	9540 [972.8]	14.4	10590 [1080]
	70	630.95	64.34	13.4		15.1		16.8
	80	552.08	56.3	15.4		17.3		19.2
	90	490.74	50.04	17.3		19.4		21.6
	100	441.67	45.04	19.2		21.6		24
	125	353.33	36.03	24		27		30
	150	294.44	30.02	28.8		32.4		36
	175	252.38	25.74	33.6		37.8		42
	200	220.83	22.52	38.4		43.2		48
	225	196.3	20.02	43.2		48.6		54
	250	176.67	18.01	48		54		60
	275	160.61	16.38	52.8		59.4		66
	300	147.22	15.01	57.6		64.8		72
	350	126.19	12.87	67.2		75.6		84
70	70	773.81	78.91	13.4	10400 [1061]	15.1	11700 [1193]	16.8	13000 [1326]
	80	677.08	69.04	15.4		17.3		19.2
	90	601.85	61.37	17.3		19.4		21.6
	100	541.67	55.23	19.2		21.6		24
	125	433.33	44.19	24		27		30
	150	361.11	36.82	28.8		32.4		36
	175	309.52	31.56	33.6		37.8		42
	200	270.83	27.62	38.4		43.2		48
	225	240.74	24.55	43.2		48.6		54
	250	216.67	22.09	48		54		60
	275	196.97	20.09	52.8		59.4		66
	300	180.56	18.41	57.6		64.8		72
	350	154.76	15.78	67.2		75.6		84

Extra Heavy Duty Spring Compression Data

Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	Spring Constant		Free Length x 16% (1,000,000 cycles)		Free Length x 18% (500,000 cycles)		Free Length x 20% (300,000 cycles)
Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	(N / mm)	(Kgf / mm)	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])
JIS	Burgundy	Extra Heavy Duty	8	10	166.11	16.94	1.6	255 [26]	1.8	299 [30.5]	2	343 [35]
				15	110.74	11.29	2.4		2.7		3
				20	83.06	8.47	3.2		3.6		4
				25	66.44	6.78	4		4.5		5
				30	55.37	5.65	4.8		5.4		6
				35	47.46	4.84	5.6		6.3		7
				40	41.53	4.23	6.4		7.2		8
				45	36.91	3.76	7.2		8.1		9
				50	33.22	3.39	8		9		10
				55	30.2	3.08	8.8		9.9		11
				60	27.69	2.82	9.6		10.8		12
				65	25.56	2.61	10.4		11.7		13
				70	23.73	2.42	11.2		12.6		14
				75	22.15	2.26	12		13.5		15
				80	20.76	2.12	12.8		14.4		16
			10	20	111.67	11.39	3.2	353 [36]	3.6	402 [41]	4	441 [45]
				25	89.33	9.11	4		4.5		5
				30	74.44	7.59	4.8		5.4		6
				35	63.81	6.51	5.6		6.3		7
				40	55.83	5.69	6.4		7.2		8
				45	49.63	5.06	7.2		8.1		9
				50	44.67	4.55	8		9		10
				55	40.61	4.14	8.8		9.9		11
				60	37.22	3.8	9.6		10.8		12
				65	34.36	3.5	10.4		11.7		13
				70	31.9	3.25	11.2		12.6		14
				75	29.78	3.04	12		13.5		15
				80	27.92	2.85	12.8		14.4		16
				90	24.81	2.53	14.4		16.2		18
			12	20	141.67	14.45	3.2	451 [46]	3.6	510 [52]	4	569 [58]
				25	113.33	11.56	4		4.5		5
				30	94.44	9.63	4.8		5.4		6
				35	80.95	8.25	5.6		6.3		7
				40	70.83	7.22	6.4		7.2		8
				45	62.96	6.42	7.2		8.1		9
				50	56.67	5.78	8		9		10
				55	51.52	5.25	8.8		9.9		11
				60	47.22	4.82	9.6		10.8		12
				65	43.59	4.44	10.4		11.7		13
				70	40.48	4.13	11.2		12.6		14
				75	37.78	3.85	12		13.5		15
				80	35.42	3.61	12.8		14.4		16
				90	31.48	3.21	14.4		16.2		18
			14	25	148.22	15.11	4	588 [60]	4.5	667 [68]	5	736 [75.1]
				30	123.52	12.6	4.8		5.4		6
				35	105.87	10.8	5.6		6.3		7
				40	92.64	9.45	6.4		7.2		8
				45	82.35	8.4	7.2		8.1		9
				50	74.11	7.56	8		9		10
				55	67.37	6.87	8.8		9.9		11
				60	61.76	6.3	9.6		10.8		12
				65	57.01	5.81	10.4		11.7		13
				70	52.94	5.4	11.2		12.6		14
				75	49.41	5.04	12		13.5		15
				80	46.32	4.72	12.8		14.4		16
				90	41.17	4.2	14.4		16.2		18
				100	37.06	3.78	16		18		20
			16	25	196.22	20.01	4	785 [80]	4.5	883 [90]	5	981 [100]
				30	163.52	16.67	4.8		5.4		6
				35	140.16	14.29	5.6		6.3		7
				40	122.64	12.51	6.4		7.2		8
				45	109.01	11.12	7.2		8.1		9
				50	98.11	10	8		9		10
				55	89.19	9.1	8.8		9.9		11
60	81.76	8.34		9.6	10.8	12
65	75.47	7.7		10.4	11.7	13
70	70.08	7.15		11.2	12.6	14
75	65.41	6.67		12	13.5	15
80	61.32	6.25		12.8	14.4	16
90	54.51	5.56		14.4	16.2	18
100	49.06	5		16	18	20
125	39.24	4		20	22.5	25
18	25	246.22	25.11	4	981 [100]	4.5	1108 [113]	5	1226 [125]
	30	205.19	20.92	4.8		5.4		6
	35	175.87	17.93	5.6		6.3		7
	40	153.89	15.69	6.4		7.2		8
	45	136.79	13.95	7.2		8.1		9
	50	123.11	12.55	8		9		10
	55	111.92	11.41	8.8		9.9		11
	60	102.59	10.46	9.6		10.8		12
	65	94.7	9.66	10.4		11.7		13
	70	87.94	8.97	11.2		12.6		14
	75	82.07	8.37	12		13.5		15
	80	76.94	7.85	12.8		14.4		16
	90	68.4	6.97	14.4		16.2		18
	100	61.56	6.28	16		18		20
	125	49.24	5.02	20		22.5		22.5
20	25	313.78	32	4	1255 [128]	4.5	1412 [144]	5	1569 [160]
	30	261.48	26.66	4.8		5.4		6
	35	224.13	22.85	5.6		6.3		7
	40	196.11	20	6.4		7.2		8
	45	174.32	17.78	7.2		8.1		9
	50	156.89	16	8		9		10
	55	142.63	14.54	8.8		9.9		11
	60	130.74	13.33	9.6		10.8		12
	65	120.68	12.31	10.4		11.7		13
	70	112.06	11.43	11.2		12.6		14
	75	104.59	10.67	12		13.5		15
	80	98.06	10	12.8		14.4		16
	90	87.16	8.89	14.4		16.2		18
	100	78.44	8	16		18		20
	125	62.76	6.4	20		22.5		22.5
	150	52.3	5.33	24		27		30
22	25	383.56	39.11	4	1530 [156]	4.5	1726 [176]	5	1912 [195]
	30	319.63	32.59	4.8		5.4		6
	35	273.97	27.94	5.6		6.3		7
	40	239.72	24.44	6.4		7.2		8
	45	213.09	21.73	7.2		8.1		9
	50	191.78	19.56	8		9		10
	55	174.34	17.78	8.8		9.9		11
	60	159.81	16.3	9.6		10.8		12
	65	147.52	15.04	10.4		11.7		13
	70	136.98	13.97	11.2		12.6		14
	75	127.85	13.04	12		13.5		15
	80	119.86	12.22	12.8		14.4		16
	90	106.54	10.86	14.4		16.2		18
	100	95.89	9.78	16		18		20
	125	76.71	7.82	20		22.5		22.5
	150	63.93	6.52	24		27		30
25	25	482.22	49.17	4	1922 [196]	4.5	2170 [221.3]	5	2400 [244.7]
	30	401.85	40.98	4.8		5.4		6
	35	344.44	35.12	5.6		6.3		7
	40	301.39	30.73	6.4		7.2		8
	45	267.9	27.32	7.2		8.1		9
	50	241.11	24.59	8		9		10
	55	219.19	22.35	8.8		9.9		11
	60	200.93	20.49	9.6		10.8		12
	65	185.47	18.91	10.4		11.7		13
	70	172.22	17.56	11.2		12.6		14
	75	160.74	16.39	12		13.5		15
	80	150.69	15.37	12.8		14.4		16
	90	133.95	13.66	14.4		16.2		18
	100	120.56	12.29	16		18		20
	125	96.44	9.83	20		22.5		22.5
	150	80.37	8.2	24		27		30
	175	68.89	7.02	28		31.5		35
	200	60.28	6.15	32		36		40
27	25	568.89	58.01	4	2280 [232.5]	4.5	2560 [261.1]	5	2840 [289.6]
	30	474.07	48.34	4.8		5.4		6
	35	406.35	41.44	5.6		6.3		7
	40	355.56	36.26	6.4		7.2		8
	45	316.05	32.23	7.2		8.1		9
	50	284.44	29.01	8		9		10
	55	258.59	26.37	8.8		9.9		11
	60	237.04	24.17	9.6		10.8		12
	65	218.8	22.31	10.4		11.7		13
	70	203.17	20.72	11.2		12.6		14
	75	189.63	19.34	12		13.5		15
	80	177.78	18.13	12.8		14.4		16
	90	158.02	16.11	14.4		16.2		18
	100	142.22	14.5	16		18		20
	125	113.78	11.6	20		22.5		22.5
	150	94.81	9.67	24		27		30
	175	81.27	8.29	28		31.5		35
	200	71.11	7.25	32		36		40
30	25	706.67	72.06	4	2820 [287.6]	4.5	3180 [324.3]	5	3530 [360]
	30	588.89	60.05	4.8		5.4		6
	35	504.76	51.47	5.6		6.3		7
	40	441.67	45.04	6.4		7.2		8
	45	392.59	40.03	7.2		8.1		9
	50	353.33	36.03	8		9		10
	55	321.21	32.75	8.8		9.9		11
	60	294.44	30.02	9.6		10.8		12
	65	271.79	27.72	10.4		11.7		13
	70	252.38	25.74	11.2		12.6		14
	75	235.56	24.02	12		13.5		15
	80	220.83	22.52	12.8		14.4		16
	90	196.3	20.02	14.4		16.2		18
	100	176.67	18.01	16		18		20
	125	141.33	14.41	20		22.5		22.5
	150	117.78	12.01	24		27		30
	175	100.95	10.29	28		31.5		35
	200	88.33	9.01	32		36		40
35	40	600	61.18	6.4	3840 [391.6]	7.2	4320 [440.5]	8	4810 [490.5]
	45	533.33	54.38	7.2		8.1		9
	50	480	48.95	8		9		10
	55	436.36	44.5	8.8		9.9		11
	60	400	40.79	9.6		10.8		12
	65	369.23	37.65	10.4		11.7		13
	70	342.86	34.96	11.2		12.6		14
	75	320	32.63	12		13.5		15
	80	300	30.59	12.8		14.4		16
	90	266.67	27.19	14.4		16.2		18
	100	240	24.47	16		18		20
	125	192	19.58	20		22.5		22.5
	150	160	16.32	24		27		30
	175	137.14	13.98	28		31.5		35
	200	120	12.24	32		36		40
40	40	784.72	80.02	6.4	5020 [511.9]	7.2	5650 [576.1]	8	6280 [640.4]
	45	697.53	71.13	7.2		8.1		9
	50	627.78	64.02	8		9		10
	55	570.71	58.2	8.8		9.9		11
	60	523.15	53.35	9.6		10.8		12
	65	482.91	49.24	10.4		11.7		13
	70	448.41	45.73	11.2		12.6		14
	75	418.52	42.68	12		13.5		15
	80	392.36	40.01	12.8		14.4		16
	90	348.77	35.56	14.4		16.2		18
	100	313.89	32.01	16		18		20
	125	251.11	25.61	20		22.5		22.5
	150	209.26	21.34	24		27		30
	175	179.37	18.29	28		31.5		35
	200	156.94	16	32		36		40
	225	139.51	14.23	36		40.5		45
	250	125.56	12.80	40		45		50
	275	114.14	11.64	44		49.5		55
	300	104.63	10.67	48		54		60
50	50	981.11	100	8	7850 [800.5]	9	8830 [900.4]	10	9810 [1000]
	55	891.92	90.95	8.8		9.9		11
	60	817.59	83.37	9.6		10.8		12
	65	754.7	76.96	10.4		11.7		13
	70	700.79	71.46	11.2		12.6		14
	75	654.07	66.7	12		13.5		15
	80	613.19	62.53	12.8		14.4		16
	90	545.06	55.58	14.4		16.2		18
	100	490.56	50.02	16		18		20
	125	392.44	40.02	20		22.5		22.5
	150	327.04	33.35	24		27		30
	175	280.32	28.58	28		31.5		35
	200	245.28	25.01	32		36		40
	225	218.02	22.23	36		40.5		45
	250	196.22	20.01	40		45		50
	275	178.38	18.19	44		49.5		55
	300	163.52	16.67	48		54		60
	350	140.16	14.29	56		63		70
60	60	1176.85	120	9.6	11300 [1152]	10.8	12710 [1296]	12	14120 [1440]
	70	1008.73	102.9	11.2		12.6		14
	80	882.64	90	12.8		14.4		16
	90	784.57	80	14.4		16.2		18
	100	706.11	72	16		18		20
	125	564.89	57.6	20		22.5		22.5
	150	470.74	48	24		27		30
	175	403.49	41.14	28		31.5		35
	200	353.06	36	32		36		40
	225	313.83	32	36		40.5		45
	250	282.44	28.8	40		45		50
	275	256.77	26.18	44		49.5		55
	300	235.37	24	48		54		60
	350	201.75	20.57	56		63		70
70	70	1285.71	131.1	11.2	14400 [1468]	12.6	16200 [1652]	14	18000 [1836]
	80	1125	114.7	12.8		14.4		16
	90	1000	102	14.4		16.2		18
	100	900	91.77	16		18		20
	125	720	73.42	20		22.5		22.5
	150	600	61.18	24		27		30
	175	514.29	52.44	28		31.5		35
	200	450	45.89	32		36		40
	225	400	40.79	36		40.5		45
	250	360	36.71	40		45		50
	275	327.27	33.37	44		49.5		55
	300	300	30.59	48		54		60
	350	257.14	26.22	56		63		70

ISO Die Spring Compression Data

Light Duty Spring Compression Data

Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	Spring Constant		Free Length x 30% (1,500,000 cycles)		Free Length x 35% (500,000 cycles)		Free Length x 40% (200,000 cycles)
Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	(N / mm)	(Kgf / mm)	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])
ISO	Green	Light Duty	10	25	12	1.22	7.5	90 [9.2]	8.8	105 [10.7]	10	120 [12.2]
				32	9.4	0.96	9.6		11.2		12.8
				38	7.9	0.81	11.4		13.3		15.2
				44	6.8	0.69	13.2		15.4		17.6
				51	5.9	0.6	15.3		17.9		20.4
				64	4.7	0.48	19.2		22.4		25.6
				76	3.9	0.4	22.8		26.6		30.4
				89	3.4	0.35	26.7		31.2		35.6
				102	2.9	0.3	30.6		35.7		40.8
				305	1	0.1	91.5		106.8		122
			12.5	25	24	2.45	7.5	180 [18.4]	8.8	210 [21.4]	10	240 [24.5]
				32	18.8	1.92	9.6		11.2		12.8
				38	15.8	1.61	11.4		13.3		15.2
				44	13.6	1.39	13.2		15.4		17.6
				51	11.8	1.2	15.3		17.9		20.4
				64	9.4	0.96	19.2		22.4		25.6
				76	7.9	0.81	22.8		26.6		30.4
				89	6.7	0.68	26.7		31.2		35.6
				102	5.9	0.6	30.6		35.7		40.8
				115	5.2	0.53	34.5		40.3		46
				305	2	0.2	91.5		106.8		122
			16	25	30	3.06	7.5	225 [22.9]	8.8	263 [26.8]	10	300 [30.6]
				32	23.4	2.39	9.6		11.2		12.8
				38	19.7	2	11.4		13.3		15.2
				44	17	1.73	13.2		15.4		17.6
				51	14.7	1.5	15.3		17.9		20.4
				64	11.7	1.19	19.2		22.4		25.6
				76	9.9	1	22.8		26.6		30.4
				89	8.4	0.86	26.7		31.2		35.6
				102	7.4	0.75	30.6		35.7		40.8
				115	6.5	0.66	34.5		40.3		46
				127	5.9	0.6	38.1		44.5		50.8
				305	2.5	0.25	91.5		106.8		122
			20	25	60	6.12	7.5	450 [45.9]	8.8	525 [53.5]	10	600 [61.2]
				32	46.9	4.78	9.6		11.2		12.8
				38	39.5	4.03	11.4		13.3		15.2
				44	34.1	3.48	13.2		15.4		17.6
				51	29.4	3	15.3		17.9		20.4
				64	23.4	2.39	19.2		22.4		25.6
				76	19.7	2.01	22.8		26.6		30.4
				89	16.9	1.72	26.7		31.2		35.6
				102	14.7	1.5	30.6		35.7		40.8
				115	13	1.33	34.5		40.3		46
				127	11.8	1.2	38.1		44.5		50.8
				139	10.8	1.1	41.7		48.7		55.6
				152	9.9	1	45.6		53.2		60.8
				178	8.4	0.86	53.4		62.3		71.2
				203	7.4	0.75	60.9		71.1		81.2
				305	4.9	0.5	91.5		106.8		122
			25	25	90	9.18	7.5	675 [68.8]	8.8	788 [80.4]	10	900 [91.8]
				32	70.3	7.17	9.6		11.2		12.8
				38	59.2	6.04	11.4		13.3		15.2
				44	51.1	5.21	13.2		15.4		17.6
				51	44.1	4.5	15.3		17.9		20.4
				64	35.2	3.6	19.2		22.4		25.6
				76	29.6	3.02	22.8		26.6		30.4
				89	25.3	2.58	26.7		31.2		35.6
				102	22.1	2.26	30.6		35.7		40.8
				115	19.6	1.2	34.5		40.3		46
				127	17.7	1.8	38.1		44.5		50.8
				139	16.2	1.65	41.7		48.7		55.6
				152	14.8	1.51	45.6		53.2		60.8
				178	12.6	1.28	53.4		62.3		71.2
				203	11.1	1.13	60.9		71.1		81.2
229	9.8	1		68.7	80.2	91.6
305	7.4	0.75		91.5	106.8	122
32	38	92.1	9.39	11.4	1050 [107.1]	13.3	1225 [124.9]	15.2	1400 [142.8]
	44	79.5	8.11	13.2		15.4		17.6
	51	68.6	7	15.3		17.9		20.4
	64	54.7	5.58	19.2		22.4		25.6
	76	46.1	4.7	22.8		26.6		30.4
	89	39.3	4	26.7		31.2		35.6
	102	34.3	3.5	30.6		35.7		40.8
	115	30.4	3.1	34.5		40.3		46
	127	27.6	2.81	38.1		44.5		50.8
	139	25.2	2.57	41.7		48.7		55.6
	152	23	2.35	45.6		53.2		60.8
	178	19.7	2.01	53.4		62.3		71.2
	203	17.2	1.75	60.9		71.1		81.2
	229	15.3	1.56	68.7		80.2		91.6
	254	13.8	1.41	76.2		88.9		101.6
	305	11.5	1.17	91.5		106.8		122
40	51	98	10	15.3	1500 [153]	17.9	1750 [178.5]	20.4	2000 [203.9]
	64	78.1	7.96	19.2		22.4		25.6
	76	65.8	6.71	22.8		26.6		30.4
	89	56.2	5.73	26.7		31.2		35.6
	102	49	5	30.6		35.7		40.8
	115	43.5	4.44	34.5		40.3		46
	127	39.4	4.02	38.1		44.5		50.8
	139	36	3.67	41.7		48.7		55.6
	152	32.9	3.35	45.6		53.2		60.8
	178	28.1	2.87	53.4		62.3		71.2
	203	24.6	2.51	60.9		71.1		81.2
	229	21.8	2.22	68.7		80.2		91.6
	254	19.7	2.01	76.2		88.9		101.6
	305	16.5	1.68	91.5		106.8		122
50	64	156.3	15.94	19.2	3000 [305.9]	22.4	3500 [356.9]	25.6	4000 [407.9]
	76	131.6	13.42	22.8		26.6		30.4
	89	112.4	11.46	26.7		31.2		35.6
	102	98	10	30.6		35.7		40.8
	115	87	8.87	34.5		40.3		46
	127	78.7	8.03	38.1		44.5		50.8
	139	71.9	7.33	41.7		48.7		55.6
	152	65.8	6.71	45.6		53.2		60.8
	178	56.2	5.73	53.4		62.3		71.2
	203	49.3	5.03	60.9		71.1		81.2
	229	43.7	4.46	68.7		80.2		91.6
	254	39.4	4.02	76.2		88.9		101.6
	305	32.8	3.34	91.5		106.8		122
63	76	197.4	20.13	22.8	4500 [458.9]	26.6	5250 [535.4]	30.4	6000 [611.8]
	89	168.5	17.18	26.7		31.2		35.6
	102	147.1	15	30.6		35.7		40.8
	115	130.4	13.3	34.5		40.3		46
	127	118.1	12.04	38.1		44.5		50.8
	152	98.7	10.06	45.6		53.2		60.8
	178	84.3	8.6	53.4		62.3		71.2
	203	73.9	7.54	60.9		71.1		81.2
	229	65.5	6.68	68.7		80.2		91.6
	254	59.1	6.03	76.2		88.9		101.6
	305	49.2	5.02	91.5		106.8		122

Medium Duty Spring Compression Data

Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	Spring Constant		Free Length x 30% (1,500,000 cycles)		Free Length x 33.75% (500,000 cycles)		Free Length x 37.5% (200,000 cycles)
Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	(N / mm)	(Kgf / mm)	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])
ISO	Blue	Medium Duty	10	25	18.1	1.85	7.5	136 [13.9]	8.4	153 [15.6]	9.4	170 [17.3]
				32	14.2	1.45	9.6		10.8		12
				38	11.9	1.21	11.4		12.8		14.3
				44	10.3	1.05	13.2		14.9		16.5
				51	8.9	0.91	15.3		17.2		19.1
				64	7.1	0.72	19.2		21.6		24
				76	6	0.61	22.8		25.7		28.5
				89	5.1	0.52	26.7		30		33.4
				102	4.4	0.45	30.6		34.4		38.3
				305	1.5	0.15	91.5		102.9		114.4
			12.5	25	32	3.26	7.5	240 [24.5]	8.4	270 [27.5]	9.4	300 [30.6]
				32	25	2.55	9.6		10.8		12
				38	21.1	2.15	11.4		12.8		14.3
				44	18.2	1.86	13.2		14.9		16.5
				51	15.7	1.6	15.3		17.2		19.1
				64	12.5	1.27	19.2		21.6		24
				76	10.5	1.07	22.8		25.7		28.5
				89	9	0.92	26.7		30		33.4
				102	7.8	0.8	30.6		34.4		38.3
				115	7	0.71	34.5		38.8		43.1
				305	2.6	0.27	91.5		102.9		114.4
			16	25	53.3	5.44	7.5	400 [40.8]	8.4	450 [45.9]	9.4	500 [51]
				32	41.7	4.25	9.6		10.8		12
				38	35.1	3.58	11.4		12.8		14.3
				44	30.3	3.09	13.2		14.9		16.5
				51	26.1	2.66	15.3		17.2		19.1
				64	20.8	2.12	19.2		21.6		24
				76	17.5	1.78	22.8		25.7		28.5
				89	15	1.53	26.7		30		33.4
				102	13.1	1.34	30.6		34.4		38.3
				115	11.6	1.18	34.5		38.8		43.1
				127	10.5	1.07	38.1		42.9		47.6
				305	4.4	0.45	91.5		102.9		114.4
			20	25	85.3	8.7	7.5	640 [65.3]	8.4	720 [72.4]	9.4	800 [81.6]
				32	66.7	6.8	9.6		10.8		12
				38	56.1	5.72	11.4		12.8		14.3
				44	48.5	4.95	13.2		14.9		16.5
				51	41.8	4.26	15.3		17.2		19.1
				64	33.3	3.4	19.2		21.6		24
				76	28.1	2.87	22.8		25.7		28.5
				89	24	2.45	26.7		30		33.4
				102	20.9	2.13	30.6		34.4		38.3
				115	18.6	1.9	34.5		38.8		43.1
				127	16.8	1.71	38.1		42.9		47.6
				139	15.3	1.56	41.7		46.9		52.1
				152	14	1.43	45.6		51.3		57
				178	12	1.22	53.4		60.1		66.8
				203	10.5	1.07	60.9		68.5		76.1
				305	7	0.71	91.5		102.9		114.4
			25	25	128	13.05	7.5	960 [97.9]	8.4	1080 [110.1]	9.4	1200 [122.4]
				32	100	10.2	9.6		10.8		12
				38	84.2	8.59	11.4		12.8		14.3
				44	72.7	7.41	13.2		14.9		16.5
				51	62.7	6.39	15.3		17.2		19.1
				64	50	5.1	19.2		21.6		24
				76	42.1	4.29	22.8		25.7		28.5
				89	36	3.67	26.7		30		33.4
				102	31.4	3.2	30.6		34.4		38.3
				115	27.8	2.83	34.5		38.8		43.1
				127	25.2	2.57	38.1		42.9		47.6
				139	23	2.35	41.7		46.9		52.1
				152	21.1	2.15	45.6		51.3		57
				178	18	1.84	53.4		60.1		66.8
				203	15.8	1.61	60.9		68.5		76.1
229	14	1.43		68.7	77.3	85.9
305	10.5	1.07		91.5	102.9	114.4
32	38	154.4	15.74	11.4	1760 [179.5]	12.8	1980 [201.9]	14.3	2200 [224.3]
	44	133.3	13.59	13.2		14.9		16.5
	51	115	11.73	15.3		17.2		19.1
	64	91.7	9.35	19.2		21.6		24
	76	77.2	7.87	22.8		25.7		28.5
	89	65.9	6.72	26.7		30		33.4
	102	57.5	5.86	30.6		34.4		38.3
	115	51	5.2	34.5		38.8		43.1
	127	46.2	4.71	38.1		42.9		47.6
	139	42.2	4.3	41.7		46.9		52.1
	152	38.6	3.94	45.6		51.3		57
	178	33	3.37	53.4		60.1		66.8
	203	28.9	2.95	60.9		68.5		76.1
	229	25.6	2.61	68.7		77.3		85.9
	254	23.1	2.36	76.2		85.7		95.3
	305	19.2	1.96	91.5		102.9		114.4
40	51	156.9	16	15.3	2400 [244.7]	17.2	2700 [275.3]	19.1	3000 [305.9]
	64	125	12.75	19.2		21.6		24
	76	105.3	10.74	22.8		25.7		28.5
	89	89.9	9.17	26.7		30		33.4
	102	78.4	8	30.6		34.4		38.3
	115	69.6	7.1	34.5		38.8		43.1
	127	63	6.42	38.1		42.9		47.6
	139	57.6	5.87	41.7		46.9		52.1
	152	52.6	5.36	45.6		51.3		57
	178	44.9	4.58	53.4		60.1		66.8
	203	39.4	4.02	60.9		68.5		76.1
	229	34.9	3.56	68.7		77.3		85.9
	254	31.5	3.21	76.2		85.7		95.3
	305	26.2	2.67	91.5		102.9		114.4
50	64	208.3	21.24	19.2	4000 [407.9]	21.6	4500 [458.9]	24	5000 [509.9]
	76	175.4	17.89	22.8		25.7		28.5
	89	149.8	15.28	26.7		30		33.4
	102	130.7	13.33	30.6		34.4		38.3
	115	115.9	11.82	34.5		38.8		43.1
	127	105	10.71	38.1		42.9		47.6
	139	95.9	9.78	41.7		46.9		52.1
	152	87.7	8.94	45.6		51.3		57
	178	74.9	7.64	53.4		60.1		66.8
	203	65.7	6.7	60.9		68.5		76.1
	229	58.2	5.93	68.7		77.3		85.9
	254	52.5	5.35	76.2		85.7		95.3
	305	43.7	4.46	91.5		102.9		114.4
63	76	280.7	28.62	22.8	6400 [652.6]	25.7	7200 [734.2]	28.5	8000 [815.8]
	89	239.7	24.44	26.7		30		33.4
	102	209.2	21.33	30.6		34.4		38.3
	115	185.5	18.92	34.5		38.8		43.1
	127	168	17.13	38.1		42.9		47.6
	152	140.4	14.32	45.6		51.3		57
	178	119.9	12.13	53.4		60.1		66.8
	203	105.1	10.72	60.9		68.5		76.1
	229	93.2	9.5	68.7		77.3		85.9
	254	84	8.57	76.2		85.7		95.3
	305	69.9	7.13	91.5		102.9		114.4

Heavy Duty Spring Compression Data

Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	Spring Constant		Free Length x 25% (1,500,000 cycles)		Free Length x 27.5% (500,000 cycles)		Free Length x 30% (200,000 cycles)
Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	(N / mm)	(Kgf / mm)	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])
ISO	Red	Heavy Duty	10	25	26.7	2.72	6.3	167 [17]	6.9	183 [18.7]	7.5	200 [20.4]
				32	20.8	2.12	8		8.8		9.6
				38	17.5	1.78	9.5		10.5		11.4
				44	15.2	1.55	11		12.1		13.2
				51	13.1	1.34	12.8		14		15.3
				64	10.4	1.06	16		17.6		19.2
				76	8.8	0.9	19		20.9		22.8
				89	7.5	0.76	22.3		24.5		26.7
				102	6.5	0.66	25.5		28.1		30.6
				305	2.2	0.22	76.3		83.9		91.5
			12.5	25	44	4.49	6.3	275 [28]	6.9	303 [30.9]	7.5	330 [33.7]
				32	34.4	3.51	8		8.8		9.6
				38	28.9	2.95	9.5		10.5		11.4
				44	25	2.55	11		12.1		13.2
				51	21.6	2.2	12.8		14		15.3
				64	17.2	1.75	16		17.6		19.2
				76	14.5	1.48	19		20.9		22.8
				89	12.4	1.26	22.3		24.5		26.7
				102	10.8	1.1	25.5		28.1		30.6
				115	9.6	0.98	28.8		31.6		34.5
				305	3.6	0.37	76.3		83.9		91.5
			16	25	80	8.16	6.3	500 [50]	6.9	550 [56.1]	7.5	600 [61.2]
				32	62.5	6.37	8		8.8		9.6
				38	52.6	5.36	9.5		10.5		11.4
				44	45.5	4.64	11		12.1		13.2
				51	39.2	4	12.8		14		15.3
				64	31.3	3.2	16		17.6		19.2
				76	26.3	2.68	19		20.9		22.8
				89	22.5	2.29	22.3		24.5		26.7
				102	19.6	2	25.5		28.1		30.6
				115	17.4	1.77	28.8		31.6		34.5
				127	15.7	1.6	31.8		34.9		38.1
				305	6.6	0.67	76.3		83.9		91.5
			20	25	160	16.32	6.3	1000 [102]	6.9	1100 [112.2]	7.5	1200 [122.4]
				32	125	12.75	8		8.8		9.6
				38	105.3	10.74	9.5		10.5		11.4
				44	90.9	9.27	11		12.1		13.2
				51	78.4	8	12.8		14		15.3
				64	62.5	6.37	16		17.6		19.2
				76	52.6	5.36	19		20.9		22.8
				89	44.9	4.58	22.3		24.5		26.7
				102	39.2	4	25.5		28.1		30.6
				115	34.8	3.55	28.8		31.6		34.5
				127	31.5	3.21	31.8		34.9		38.1
				139	28.8	2.94	34.8		38.2		41.7
				152	26.3	2.68	38		41.8		45.6
				178	22.5	2.29	44.5		49		53.4
				203	19.7	2	50.8		55.8		60.9
				305	13.1	1.34	61		83.9		91.5
			25	25	266.7	27.2	6.3	1667 [170]	6.9	1833 [186.9]	7.5	2000 [203.9]
				32	208.3	21.24	8		8.8		9.6
				38	175.4	17.89	9.5		10.5		11.4
				44	151.4	15.44	11		12.1		13.2
				51	130.7	13.33	12.8		14		15.3
				64	104.2	10.63	16		17.6		19.2
				76	87.7	8.94	19		20.9		22.8
				89	74.9	7.64	22.3		24.5		26.7
				102	65.4	6.67	25.5		28.1		30.6
				115	58	5.91	28.8		31.6		34.5
				127	52.5	5.35	31.8		34.9		38.1
				139	48	4.89	34.8		38.2		41.7
				152	43.9	4.48	38		41.8		45.6
				178	37.5	3.82	44.5		49		53.4
				203	32.8	3.34	50.8		55.8		60.9
229	29.2	2.98		57.3	63	68.7
305	21.9	2.23		76.3	83.9	91.5
32	38	298.2	30.41	9.5	2833 [288.9]	10.5	3117 [317.8]	11.4	3400 [346.7]
	44	257.6	26.27	11		12.1		13.2
	51	222.2	22.66	12.8		14		15.3
	64	177.1	18.06	16		17.6		19.2
	76	149.1	15.2	19		20.9		22.8
	89	127.3	12.98	22.3		24.5		26.7
	102	111.1	11.33	25.5		28.1		30.6
	115	98.6	10.05	28.8		31.6		34.5
	127	89.2	9.1	31.8		34.9		38.1
	139	81.5	8.31	34.8		38.2		41.7
	152	74.6	7.61	38		41.8		45.6
	178	63.7	6.5	44.5		49		53.4
	203	55.8	5.69	50.8		55.8		60.9
	229	49.5	5.05	57.3		63		68.7
	254	44.6	4.55	63.5		69.9		76.2
	305	37.2	3.79	76.3		83.9		91.5
40	51	326.8	33.32	12.8	4167 [424.9]	14	4583 [467.3]	15.3	5000 [509.9]
	64	260.4	26.55	16		17.6		19.2
	76	219.3	22.36	19		20.9		22.8
	89	187.3	19.1	22.3		24.5		26.7
	102	163.4	16.66	25.5		28.1		30.6
	115	144.9	14.78	28.8		31.6		34.5
	127	131.2	13.38	31.8		34.9		38.1
	139	119.9	12.23	34.8		38.2		41.7
	152	109.6	11.18	38		41.8		45.6
	178	93.6	9.54	44.5		49		53.4
	203	82.1	8.37	50.8		55.8		60.9
	229	72.8	7.42	57.3		63		68.7
	254	65.6	6.69	63.5		69.9		76.2
	305	54.6	5.57	76.3		83.9		91.5
50	64	390.6	39.83	16	6250 [637.3]	17.6	6875 [701.1]	19.2	7500 [764.8]
	76	328.9	33.54	19		20.9		22.8
	89	280.9	28.64	22.3		24.5		26.7
	102	245.1	24.99	25.5		28.1		30.6
	115	217.4	22.17	28.8		31.6		34.5
	127	196.9	20.08	31.8		34.9		38.1
	139	179.9	18.34	34.8		38.2		41.7
	152	164.5	16.77	38		41.8		45.6
	178	140.4	14.32	44.5		49		53.4
	203	123.2	12.56	50.8		55.8		60.9
	229	109.2	11.14	57.3		63		68.7
	254	98.4	10.03	63.5		69.9		76.2
	305	82	8.36	76.3		83.9		91.5
Outer Diameter (mm)	Free Length (mm)	Spring Constant		Free Length x 25% (1,500,000 cycles)		Free Length x 27.5% (500,000 cycles)		Free Length x 30% (100,000 cycles)
Outer Diameter (mm)	Free Length (mm)	(N / mm)	(Kgf / mm)	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])
63	76	526.3	53.67	19	10000 [1019.7]	20.9	11000 [1121.7]	22.8	12000 [1223.7]
	89	449.4	45.83	22.3		24.5		26.7
	102	392.2	39.99	25.5		28.1		30.6
	115	347.8	35.47	28.8		31.6		34.5
	127	315	32.12	31.8		34.9		38.1
	152	263.2	26.84	38		41.8		45.6
	178	224.7	22.91	44.5		49		53.4
	203	197	20.09	50.8		55.8		60.9
	229	174.7	17.81	57.3		63		68.7
	254	157.5	16.06	63.5		69.9		76.2
	305	131.1	13.37	76.3		83.9		91.5

Extra Heavy Duty Spring Compression Data

Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	Spring Constant		Free Length x 20% (1,500,000 cycles)		Free Length x 22.5% (500,000 cycles)		Free Length x 25% (200,000 cycles)
Manufacturing Standard	Colour	Strength Classification	Outer Diameter (mm)	Free Length (mm)	(N / mm)	(Kgf / mm)	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])
ISO	Yellow	Extra Heavy Duty	10	25	36.8	3.75	5	184 [18.8]	5.6	207 [21.1]	6.3	230 [23.5]
				32	28.8	2.94	6.4		7.2		8
				38	24.2	2.47	7.6		8.6		9.5
				44	20.9	2.13	8.8		9.9		11
				51	18	1.84	10.2		11.5		12.8
				64	14.4	1.47	12.8		14.4		16
				76	12.1	1.23	15.2		17.1		19
				89	10.3	1.05	17.8		20		22.3
				102	9	0.92	20.4		23		25.5
				305	3	0.31	61		68.6		76.3
			12.5	25	57.6	5.87	5	288 [29.4]	5.6	324 [33]	6.3	360 [36.7]
				32	45	4.59	6.4		7.2		8
				38	37.9	3.86	7.6		8.6		9.5
				44	32.7	3.33	8.8		9.9		11
				51	28.2	2.88	10.2		11.5		12.8
				64	22.5	2.29	12.8		14.4		16
				76	18.9	1.93	15.2		17.1		19
				89	16.2	1.65	17.8		20		22.3
				102	14.1	1.44	20.4		23		25.5
				115	12.5	1.27	23		25.9		28.8
				305	4.7	0.48	61		68.6		76.3
			16	25	112	11.42	5	560 [57.1	5.6	630 [64.2]	6.3	700 [71.4]
				32	87.5	8.92	6.4		7.2		8
				38	73.7	7.52	7.6		8.6		9.5
				44	63.6	6.49	8.8		9.9		11
				51	54.9	5.6	10.2		11.5		12.8
				64	43.8	4.47	12.8		14.4		16
				76	36.8	3.75	15.2		17.1		19
				89	31.5	3.21	17.8		20		22.3
				102	27.5	2.8	20.4		23		25.5
				115	24.3	2.48	23		25.9		28.8
				127	22	2.24	25.4		28.6		31.8
				305	9.2	0.94	61		68.6		76.3
			20	25	240	24.47	5	1200 [122.4]	5.6	1350 [137.7]	6.3	1500 [153]
				32	187.5	19.12	6.4		7.2		8
				38	157.9	16.1	7.6		8.6		9.5
				44	136.4	13.9	8.8		9.9		11
				51	117.6	12	10.2		11.5		12.8
				64	93.8	9.56	12.8		14.4		16
				76	78.9	8.05	15.2		17.1		19
				89	67.4	6.87	17.8		20		22.3
				102	58.8	6	20.4		23		25.5
				115	52.2	5.32	23		25.9		28.8
				127	47.2	4.81	25.4		28.6		31.8
				139	43.2	4.41	27.8		31.3		34.8
				152	39.5	4.03	30.4		34.2		38
				178	33.7	3.44	35.6		40.1		44.5
				203	29.6	3.02	40.6		45.7		50.8
				305	19.7	2.01	61		68.6		76.3
			25	32	312.5	31.87	6.4	2000 [203.9]	7.2	2250 [230.4]	8	2500 [254.9]
				38	263.2	26.84	7.6		8.6		9.5
				44	227.3	23.18	8.8		9.9		11
				51	196.1	20	10.2		11.5		12.8
				64	156.3	15.94	12.8		14.4		16
				76	131.6	13.42	15.2		17.1		19
				89	112.4	11.46	17.8		20		22.3
				102	98	9.99	20.4		23		25.5
				115	87	8.87	23		25.9		28.8
				127	78.7	8.03	25.4		28.6		31.8
				139	71.9	7.33	27.8		31.3		34.8
				152	65.8	6.71	30.4		34.2		38
				178	56.2	5.73	35.6		40.1		44.5
				203	49.3	5.03	40.6		45.7		50.8
				229	43.7	4.46	45.8		51.5		57.3
305	32.8	3.34		61	68.6	76.3
32	38	421.1	42.94	7.6	3200 [326.3]	8.6	3600 [367.1]	9.5	4000 [407.9]
	44	363.6	37.08	8.8		9.9		11
	51	313.7	31.99	10.2		11.5		12.8
	64	250	25.49	12.8		14.4		16
	76	210.5	21.47	15.2		17.1		19
	89	179.8	18.33	17.8		20		22.3
	102	156.9	16	20.4		23		25.5
	115	139.1	14.18	23		25.9		28.8
	127	126	12.85	25.4		28.6		31.8
	139	115.1	11.74	27.8		31.3		34.8
	152	105.3	10.74	30.4		34.2		38
	178	89.9	9.17	35.6		40.1		44.5
	203	78.8	8.04	40.6		45.7		50.8
	229	69.9	7.13	45.8		51.5		57.3
	254	63	6.42	50.8		57.2		63.5
	305	52.5	5.35	61		68.6		76.3
40	51	509.8	51.99	10.2	5200 [530.3]	11.5	5850 [596.5]	12.8	6500 [662.8]
	64	406.3	41.43	12.8		14.4		16
	76	342.1	34.88	15.2		17.1		19
	89	292.1	29.79	17.8		20		22.3
	102	254.9	25.99	20.4		23		25.5
	115	226.1	23.06	23		25.9		28.8
	127	204.7	20.87	25.4		28.6		31.8
	139	187.1	19.08	27.8		31.3		34.8
	152	171.1	17.45	30.4		34.2		38
	178	146.1	14.9	35.6		40.1		44.5
	203	128.1	13.06	40.6		45.7		50.8
	229	113.5	11.57	45.8		51.5		57.3
	254	102.4	10.44	50.8		57.2		63.5
	305	85.2	8.69	61		68.6		76.3
50	64	625	63.73	12.8	8000 [815.8]	14.4	9000 [917.7]	16	10000 [1019.7]
	76	526.3	53.67	15.2		17.1		19
	89	449.4	45.83	17.8		20		22.3
	102	392.2	39.99	20.4		23		25.5
	115	347.8	35.47	23		25.9		28.8
	127	315	32.12	25.4		28.6		31.8
	139	287.8	29.35	27.8		31.3		34.8
	152	263.2	26.84	30.4		34.2		38
	178	224.7	22.91	35.6		40.1		44.5
	203	197	20.09	40.6		45.7		50.8
	229	174.7	17.81	45.8		51.5		57.3
	254	157.5	16.06	50.8		57.2		63.5
	305	131.1	13.37	61		68.6		76.3
Outer Diameter (mm)	Free Length (mm)	Spring Constant		Free Length x 20% (1,500,000 cycles)		Free Length x 22.5% (500,000 cycles)		Free Length x 25% (100,000 cycles)
Outer Diameter (mm)	Free Length (mm)	(N / mm)	(Kgf / mm)	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])	Deflection (mm)	Load (N [Kgf])
63	76	842.1	85.87	15.2	12800 [1305.2]	17.1	14400 [1468.4]	19	16000 [1631.5]
	89	719.1	73.33	17.8		20		22.3
	102	627.5	63.99	20.4		23		25.5
	115	556.5	56.75	23		25.9		28.8
	127	503.9	51.38	25.4		28.6		31.8
	152	421.1	42.94	30.4		34.2		38
	178	359.6	36.67	35.6		40.1		44.5
	203	315.3	32.15	40.6		45.7		50.8
	229	279.5	28.5	45.8		51.5		57.3
	254	252	25.7	50.8		57.2		63.5
	305	209.8	21.39	61		68.6		76.3

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