Rolex® SP Series Belleville Washer, Plain

A Belleville Washer, also known as a Coned-Disc Spring, Conical Spring Washer, Disc Spring, Belleville Spring or Cupped Spring Washer, is a type of spring shaped like a washer. It has a frusto-conical shape which gives the washer a spring characteristic. The Belleville name comes from the inventor Julian F. Belleville.
The Belleville Washer consists primarily of a convex disc supported at the outer periphery by one force and an opposing force on the center of the DISC. DISC Springs are used singly, or in stacks, to achieve a desired load and travel. The advantage of a DISC Spring is that it generates high force in a very short spring length and with minimal movement when compressed. All DISCs are preset so that they will not significantly relax under load over time.

1) When delivered.  2) After first loading.

Specification Requirements:

● Dimensions:See dimensions above.

● Available Materials:AISI C1075 or 6150 steel.

● Available Finishes:Light protective oil.