Disc Springs

Disc springs are conically-shaped, washer-type components designed to be axially loaded. What makes disc springs unique is that based on the standardized calculations of DIN 2092, the deflection for a given load is predictable and the minimum life cycle can be determined. Disc springs can be statically loaded either continuously or intermittently, or dynamically subjected to continuous load cycling. They can be used singly or in multiples stacked parallel, in series or in a combination thereof.  More about the advantages of disc springs.

Here are design considerations:

 The SPIROL range includes all disc springs specified in DIN 2093, Groups 1 and 2, Series A, B, and C.

Specifications for Disc Springs to DIN 2093

SPIROL stocks its own standard size range in outside diameters from 8 mm to 200 mm to meet the diverse application needs of its customers.  SPIROL standard disc springs meet all DIN 2093 performance, tolerance and quality specifications as well as the DIN 2092 design criteria.

All our discs are produced within our own UK manufacturing plant under ISO/TS 16949; DIN EN ISO 9001 controls.

More about standard ranges, materials and finishes.

Special Sizes and Materials

In addition to the standard materials, stainless discs produced in Austenitic AISI 301, WNr 14310, Martensitic AISI 420, WNr 1.4021 are readily available.  For high temperature application, Inconel^® materials are recommended.

Special finishes readily available include mechanical zinc plating with or without subsequent passivation and Dacromet.  Electro zinc plating is available but not recommended due to the risk of hydrogen embrittlement.

SPIROL will work with the customer to develop special disc springs to meet the requirements of the application.  This includes special dimensions, materials, finishes, shapes, shot peening and scragging (presetting).

Conical Spring Washers

SPIROL® Conical Spring Washers are designed in accordance with DIN 6796 for use with high tensile bolts in Classes 8.8 to 10.9.

Since the spring force exerted is predictable, spring washers provide a simple effective means of determining bolt tension required to achieve a properly torqued assembly.  In addition, tension, which would otherwise be lost to expansion, wear, or compression set, is maintained.

Ball Bearing Disc Springs

Axial preloading of bearings with SPIROL® Ball Bearing Disc Springs extends the bearing life and eliminates excessive running noise.