All Springs Are Not Equal
Wave Springs offer the unique advantage of space savings when used to replace coil springs. With their smooth, circular coiled sinusoidal wave form, and rolled round edges of pre-tempered wire, Smalley’s edgewound Wave Springs offer many advantages:

  • Reduced spring height by 50%
  • Same force and deflection as coil springs
  • Fit tight radial and axial spaces
  • Over 4,000 standard sizes in carbon and stainless steel.
  • No Tooling Charges for special designs
  • Exotic alloys for all environments 
Smalley Self-Locking Rings Product Spotlight

Smalley Self-Locking Rings Product Spotlight

Our familiar and popular Smalley Spirolox® Retaining Rings can also be manufactured with a unique

self-locking feature that make them ideal for applications where high rotational speeds are involved or, where the effects of vibration, rapid acceleration or impact loading is problematic.

Self-locking rings provide a mechanical interference via a small tab on the ring that locks into a

corresponding slot in the opposite turn and prevents the ring from expanding out of the groove as a

result of centrifugal forces at high rotational speeds.

The location of the locking mechanism can be dictated by the application requirements. Internal and

external locks are easier to install (especially when small diameters or heavy cross-section material is involved) and allow for a simple visual confirmation of proper installation.

Where tamper-proof applications are involved 'centreline' locks are typically used and once the ring is removed from an application, the tab is broken and a new ring must be installed. This type of locking feature is also less likely to interfere with mating components within the assembly.

Aerospace and Automotive industries often use self-locking rings because the rotational capacity

typically meets or exceeds the application requirements and can be found in transmission and clutch


For more information on this exclusive range please contact our Technical Department on +44 (0)1435 866011 or via   One of our team will be pleased to discuss your application.

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