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Spring Washers

Joanne Qu 2023-11-09 14:18:47

Definition:
Spring washers are available in five different styles: Belleville, Crescent, Wave, Dome and Single Wave. Any of these styles can meet a wide variety of requirements depending on the needs of the application. Spring washers apply a predetermined force on adjacent members in an assembly, dampen vibration and eliminate side and end-play. They also control end pressure while keeping fasteners secure. Spring washers accommodate for thermal and pressure expansions and contractions, as well as, applying drag or resistance to the turning of the fastener.


crescent spring washer drawing

Compartment door latch preloaded with a Cresent Spring Washer.

crescent spring washer drawing

Applications:
Crescent spring washers are used in applications that require a spring washer that supports relatively light loads with a relatively wide deflection range. These spring washers provide flexibility and have the ability to withstand frequent load cycling. They provide a uniform spring rate over the deflection range and have linear load-deflection characteristics.

Crescent Spring Washers are available in the following materials and finishes:

  • Beryllium Copper: Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II

  • Spring Steel: Baking, Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Pickling, Phosphate, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II

  • Stainless Steel 17-7PH: Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Passivate, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II

  • Stainless Steel 301-304: Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Passivate, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II

wave spring washer drawing wave spring washer drawing

Bearing preloaded with a wave washer.

Applications:
Wave spring washers are commonly used in applications as cushion springs or spacers on a shaft. They are designed with a moderate load capacity with a moderate deflection range. Wave spring washers have linear load-deflection characteristics to approximately 80% of maximum deflection.

Wave Spring Washers are available in the following materials and finishes:

  • Beryllium Copper: Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II

  • Spring Steel: Baking, Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Pickling, Phosphate, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II

  • Stainless Steel 17-7PH: Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Passivate, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II

  • Stainless Steel 301-304: Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Passivate, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II

single wave spring washer drawing single wave spring washer drawing

Applications:
Single wave spring washers are similar to crescent washers, but they have a flat bearing surface for requirements that need to minimize abrasion to soft assemblies or surfaces. Single wave spring washers support relatively light loads with a relatively wide deflection range. These spring washers provide flexibility and have the ability to withstand frequent load cycling. They provide a uniform spring rate over the deflection range and have linear load-deflection characteristics.

Single Wave Spring Washers are available in the following materials and finishes:

  • Beryllium Copper: Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Pickling, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II

  • Spring Steel: Baking, Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Pickling, Phosphate, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II

dome spring washer drawing

Applications:
Dome spring washers have a very high load capacity with a very small deflection range.

Dome Spring Washers are available in the following materials and finishes:

  • Spring Steel: Baking, Black Oxide, Cadmium types I & II, Chrome, Degreasing, Bright Nickel, Pickling, Phosphate, Silver, Bright Tin, Hot Tin Dip, and Zinc types I & II