Trapezoidal Lead Screws 


Trapezoidal Lead Screws

What are Trapezoidal Lead Screws?

Trapezoidal Lead Screws, sometimes simply called 'Trapezoidal Threaded Rod' or 'Trapezoidal Threaded Bar' (not to be confused with AccuGroup's Threaded Bar range) feature a helical metric thread which is designed to drive a Trapezoidal Lead Screw Nut along its length, converting rotary motion into highly precise linear actuation. Lead Screw mechanisms are used in a large range of appliances, and are commonly found within printers, lathes, CNC machines, as well as in high-articulation robotics.

The 30° trapezoidal tooth profile of these components provides enhanced tooth strength, while also providing the accuracy and reliability of AccuGroups’ standard ACME Lead Screw range. 

AccuGroup also offer a diverse array of Cylindrical, Hexagonal, and Flanged Trapezoidal Lead Screw Nuts, which are designed for use in a variety of low-resistance, high-precision actuation purposes.

Trapezoidal Lead Screw Manufacture Process

AccuGroup's Trapezoidal Lead Screws are cold rolled, increasing surface hardness and providing exceptional levels of accuracy during the manufacturing process. Each Lead Screw is rolled in multiple phases, with gradually increasing pressure. By repeating this process, the screw is hardened into a highly precise and smooth finish. Our precision rolling techniques guarantee lead accuracies of 200µm/300mm.

Trapezoidal Lead Screw Sizing

Trapezoidal Lead Screws are manufactured in accordance with ISO standards, with leads of between 3mm and 10mm, diameters of between 10mm and 80mm, and lengths of up to 3000mm.

For more information on choosing the correct type of Lead Screw for your application, please see our Choosing a Trapezoidal Lead Screw page.

Trapezoidal Lead Screw Materials

AccuGroup's Trapezoidal Lead Screws are available in a variety of materials, including C15 and C45 Carbon Steel, A2 Stainless Steel, and Marine Grade A4 Stainless Steel. Carbon Steels are more resistant to wear and are easier to machine than Stainless Steel Lead Screws, but Stainless Steel Lead Screws are much more resistant to corrosion.

C15 Carbon Steel (1.1141/EN 10084)

Trapezoidal Lead Screws can also be manufactured from C15 Carbon Steel, which has a surface hardness of approximately 160-180 HB. C15 Carbon Steel Lead Screws are less brittle than C45 Carbon Steel components due to a lower carbon content (0.15%), resulting in fewer impurities in the material's composition. C15 Carbon Steel makes these components the most easily machined Lead Screws within this range.

C45 Carbon Steel (1.0503/EN 10083-2)

Trapezoidal Lead Screws manufactured from C45 Carbon Steel have a surface hardness of approximately 250 HB. A C45 Carbon Steel Lead Screw contains 0.45% carbon, and is harder, denser, and more resistant to wear than an equivalent C15 Carbon Steel Lead Screw.

A2 Stainless Steel (1.4301/AISI 304)

Lead Screws within this range are also available in A2 Stainless Steel, which has a surface hardness of approximately 260 HB. A2 Stainless Steel Lead Screws are ideal for use in environments where minor corrosion must be prevented.

A4 Stainless Steel (1.4401/AISI 316)

Trapezoidal Lead Screws can be manufactured from A4 Stainless Steel, with a surface hardness of 280 HB. A4 Stainless Steel is commonly known as 'Marine Grade' Stainless Steel, due to its excellent resistant to and fresh water and salt water. A4 Stainless Steel Lead Screws are the most corrosion-resistant components in AccuGroup's Trapezoidal Lead Screw range.

ACME Lead Screws

AccuGroup also supply a full range of imperial Lead Screws with trapezoidal ACME Threads. These products can be found within our ACME Lead Screws range.


Bespoke Trapezoidal Lead Screws Manufacture

High precision, bespoke manufacture of Trapezoidal Lead Screws to customer specification. State of the art facilities specialising in both small batch prototyping and large scale manufacture.

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