How to find the right Belleville Washers AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Belleville Washers
- Load and deflection curve
- Choose by the load needed at your working deflection, not by size alone. Avoid fully flattening the disc in service. A disc spring's load is set by its geometry. Fully flattening it overloads the steel and causes set or fatigue.
- Recognized standard
- Prefer disc springs made to DIN 2093 or its EN successor, with series A, B or C stated. The standard fixes dimensions and tolerances, and the series tells you the stiffness.
- Stacking arrangement
- Stack in parallel (same direction) to multiply load. Stack in series (alternating) to multiply deflection. The same discs give very different spring rates depending on how they are stacked.
- Material for the environment
- Use chrome-vanadium spring steel for general use. Use stainless or nickel alloys for corrosion or heat. Disc springs lose preload when they corrode or relax at high temperature.
- Guide clearance
- Guide the stack on a shaft or in a bore with clearance. Use hardened guides for dynamic loads. Friction and wear on the guide change the effective load and shorten life.
Brands that matter
- Schnorr: Disc spring specialist that publishes load data.
- Associated Spring Raymond: Industrial springs, including Belleville washers.
- Lee Spring: Stock spring catalog that includes disc springs.
What to avoid
- Listings with no load or deflection data
- Using decorative conical washers where a rated disc spring is needed
Questions
Are conical washers for bolts the same as Belleville springs?
They are related. Bolting conical washers, such as DIN 6796, are sized for bolt preload. Spring-grade Belleville discs are specified by load-deflection data.