Temper Corporation

Load Rings

A Temper Load Ring is a precision ring designed to perform as a predictable constant force element. It is fabricated from ductile, high strength stainless alloys. The Constant Force Adjustable Spacer offers a small but repeatable amount of spring back when in use, measured in thousandths of an inch over a wide tolerance of take up range.

Utilizing the Temper Load Ring, you eliminate the need to measure and shim bearings, a time-consuming and expensive process. Coupled with its compressibility, the spacer provides a highly accurate adjustment of bearings without making measurements. Once the compression rings are installed, manufacturers do not need to put shims in the spaces left by typical assembly methods. 

The primarily stainless-steel rings help manufacturers install bearing assemblies in a wide array of products, from farm tractors to boat engines, or they can be used to take up space that may be created by typical tolerance stack ups.


Our spacers are used to take up tolerance stacks where selective shimming is traditionally applied and to set preload on bearings.

Applications for Temper Load Rings include but are not limited to the following:

  • Hydraulic pumps
  • Irrigation Units
  • Speed reducers
  • Compressors
  • Electric motors
  • Boat motors
  • Farm tractors
  • Conveyors
  • Mining equipment
  • Axle wheel ends
  • Lawn mowers
  • Transmissions
  • Sewing machines
  • Industrial trucks

A ring can be designed for your application as well.

Benefits of Load Rings

  • Reduced assembly time, greater accuracy of bearing settings leading to increased bearing life and improved quality, larger tolerance absorbing range, elimination of overhead management for purchasing shims, elimination of large shim inventory and carrying cost
  • Adjustable spacers eliminate measuring and shimming and improve assembly fit
  • Cost-effective
  • Constant force compression over a wide tolerance take-up range
  • Springback constant from any adjusted height in the tolerance absorbing range.

Because of its unique properties, you can:

  • Compress these adjustable spacers and they’ll spring back at a constant value, always giving you a known force
  • Transform assembly with controllable, repeatable procedures that save time and increase accuracy in bearing and assembly adjustments
  • Make selective shimming obsolete, meaning less assembly time, lower cost, and better precision
  • Simplify bearing installation and optimize bearing life

How Load Rings Function

Load rings crush at a constant force over a wide range meaning that as they are crushed axially, the load value is the same over a large axial displacement. Generally, a ring is designed to go over a shaft or into a housing. Once installed into the assembly, the ring is crushed, usually by torquing a nut on a shaft or installing a cap on a housing. By design, once the ring is installed, it is within its constant force zone. During the design phase, our engineers select this load in such a way that ensures the ring will not overload the assembly or crush further during operation.

Below is a force vs. deflection curve of an actual Temper Load Ring:


Temper Load Rings, also known as Constant Force Adjustable Spacers, have unique properties. They are compressed at a constant force (permanent adjustment) and can spring back a small, constant value.

Visit our website at www.tempercorp.com to see how we can help you solve your bearing adjustment worries.

Contact us at https://tempercorp.com/contact-us/

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Adjustable Spacer Reference Guide
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