Disc Spring Washers

Disc spring washers are conically shaped spring washers, designed to pack power, performance, and predictability into a small, stackable form factor.
Cromwell stocks a wide range of high-quality disc springs, available in a variety of sizes, sizes, grits, and materials to suit any type of sanding job, from trusted brand Qualfast.

What are disc spring washers?

Disc springs are conically formed angled discs, loaded in an axial direction. Their unique design provides an incredibly amount of force in a very small package, with customised deflection combinations. Because of this, they are typically used in applications that require an extremely high force over a small deflection.

Why a disc spring?

The long and highly predictable fatigue life in cycling or dynamic applications give disc springs a range of advantages over alternatives, such as Belleville washers, in certain applications. The advantages of disc springs include:

• Very high energy storing capacity

• Small, space-saving design

• No fatigue or deformation under predictable loads

• Self-damping, providing excellent energy dissipation and shock absorption

• Highly adaptable, and can be stacked in a number of configurations

• Efficient and predictable performance results in lower maintenance costs

When are disc spring washers used?

Disc springs are used in a wide variety of applications involving preloading and dynamic loading. This includes shock absorbers, dampers, pressure controls and regulators, engines, automotive braking systems, clutches, valves, friction assemblies and hoists.

If you're looking for disc spring information in the context of your job or project, ask our experts for specialised advice.

Considerations when choosing a disc spring washer

Hole diameter   -   This will denote what size screw or bolt you can insert through the washer.

Material   -   Most disc spring washers are manufactured from steel, but it's always important to consider the grade and type of the steel.

Surface treatment   -   Designed to bolster product longevity, a protective coating like zinc or a phosphated finish protects against corrosion.

Disc spring jargon buster

Standards to look out for:

• DIN 2093 & 2092 - For dynamic applications, we highly recommend the usage of disc springs that conform to DIN 2093/2092. These disc springs are particularly safe and effective in high fatigue scenarios.

• DIN 16983 & 16984 - An evolution of DIN 2092/2093, outlining standard disc spring sizes and load / deflection characteristics.


What are disc springs used for?

Disc springs are used throughout preloading and dynamic loading applications and are loaded axially. Their predictable fatigue life makes them highly reliable in dynamic scenarios, such as in shock absorbers.

How to select the right disc spring?

For common dynamic or static situations, choose a disc spring that offers maximum force at 75% of its total available deflection. This is important as between a flat position and a 75% deflected position, the stress on the spring can be much more than what you can calculate.