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Cylindrical rack gears are linear drive components shaped with a rounded, cylindrical profile, featuring precision-cut teeth along the curved surface. Like their rectangular counterparts, they form one half of a rack and pinion system, converting rotary motion into linear displacement. Their round profile is particularly advantageous in applications requiring compact integration and smooth rotational alignment during assembly.
Cylindrical rack gears are frequently used in specialist machinery, compact automation equipment and robotic assemblies where curved housings or round guide profiles are present, or where a reduced mounting footprint is preferred.
Cylindrical rack gears operate in conjunction with a spur pinion gear. As the pinion rotates, its teeth engage with those on the cylindrical rack, producing linear motion along the gear’s axis. The circular form allows for rotation-friendly mounting or hybrid applications where linear and rotational adjustments are both required.
This configuration offers a smooth and space-efficient motion transfer system. It is especially effective in situations where the rack may need to pivot slightly during operation, or where cylindrical rails simplify assembly into tubular housings or guided sleeves.
Our cylindrical rack gears are available in a selection of engineering-grade materials to support a wide range of performance needs:
Each material is matched to performance needs based on load, motion frequency and environmental conditions.
Accu offers cylindrical rack gears in a variety of specifications to support customised linear motion solutions:
This range gives designers the flexibility to match system geometry and mechanical performance with exacting accuracy.
A: Cylindrical rack gears are ideal for installations requiring a round profile, such as integration into tubular structures or systems with radial symmetry. They can also offer easier rotational alignment in complex assemblies.
A: Yes. When manufactured to tight tolerances and paired with a well-matched pinion, cylindrical rack gears provide excellent repeatability and smooth linear travel, especially in guided setups.
A: While rack gears primarily function in linear motion, cylindrical profiles can be adapted for curved or partial arc arrangements when custom-machined, although standard cylindrical racks are designed for straight travel paths.
High precision, bespoke manufacture of Cylindrical Rack Gears to customer specification. State of the art facilities specialising in both small batch prototyping and large scale manufacture.
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