Belleville Washers

CMD Disc

Century Spring Corp. disc spring fabrication is subject to exacting manufacturing and quality control standards. The high carbon C1075 or alloy AISI 6150 materials used are generally in annealed condition and hardened to within a range of Rc 44-51 depending on material thickness. All discs are preset so that they will not significantly relax under load over time.


Pre-Stressed Washers

CDS Disc

In addition to our CDM line of Belleville washers, we also offer a line of pre-stressed disc springs specifically sized for use with bolts. The primary function of our CDS line in this application is to create a constant bolt load in bolted assemblies. Load compensation for differential expansion due to heat or dissimilar metals, such as electrical connection bolting, or in wear situations, or when "torque-setting" is required are good examples of CDS disc spring use.


Heavy Bolt Applications

Stainless Disc

For static heavy bolted applications, such as those required for bus bar and transformer applications, SP Series Bellevilles can be used to overcome the effects of thermal expansion and contraction. SP Belleville springs are available in stainless 17/7 PH (Call for availability).