CTW Retaining Rings

(Crescent Ring | Closed Type Retaining Ring)

CTW retaining rings, also known as Crescent Rings, are closed-loop elastic rings designed to fit into grooves on shafts or bores for axial positioning. Unlike standard circlips, the CTW ring has a fully enclosed circular shape with no gap, providing excellent stability and vibration resistance during high-speed or high-load operation.

Featuring a crescent-shaped profile, this type of ring delivers consistent tension and secure engagement, making it ideal for precision mechanisms, automotive assemblies, and rotating components.

Product Features

• Standard Reference: Crescent Ring (Not included in JIS or DIN standards)

• Installation:
  Press-fitted into shaft grooves. Fully enclosed ring design with no opening, providing secure axial retention.

• Dimensional Tolerance:
  Fits shaft diameters from ϕ3mm to ϕ50mm (custom sizes available upon request)

• Material Options:
  S50C (carbon steel), phosphate-coated for corrosion resistance

• Size Range:
  Shaft diameter: ϕ1.2mm to ϕ30mm (custom sizes available)

​​​​

Applications

• Axial positioning in precision equipment

• Retention for high-speed rotating components

• Anti-loosening and vibration-resistant structures in automotive parts

•  Motor bearings and conveyor system alignment​

​​

Customization & Notes

• Small quantity orders supported

• In-stock models available for quick inquiry

• Custom dimensions and special specs available upon request

​