General Belleville Spring Features
Belleville spring, disc spring, Belleville washer, conical compression washer are all names for the same type of spring.
Typical Solon Belleville Spring
Solon Belleville Springs offer a number of advantages:
- Keep bolted joints tight
- Efficient use of space
- High spring loads with small deflections
- Self damping
- Long service life
- Load-deflection curves which can be designed for various applications ranging from linear rates to negative rates
- Stacking in "parallel" to increase load
- Stacking in "series" to increase deflection
- Simple adjustment of the load and deflection of a spring stack by adding or removing individual springs
- Rounded edges to reduce stresses
Belleville Springs are used in a variety of applications where high spring loads are required. They are particularly useful where vibration, differential thermal expansion, relaxation, and bolt creep are problems.
Belleville springs can be used in four ways.
- Single, one spring
- Parallel, all springs stacked the same way
- Series, all springs stacked opposite each other
- Parallel-Series, a combination of #2 and #3.
A single Belleville Spring has a specific load and deflection. Belleville Springs in stacked arrangements provide increased load and / or deflection. Two springs stacked in parallel doubles the load of the single spring with no increase in deflection . Two springs stacked in series doubles the deflection of a single spring with no increases in load. The parallel - series combination results in the load of two springs and the deflection of two springs.
A graphic example of the effect of stacking is illustrated below:
The 1st curve represents a pair of washers stacked in parallel - double the load with no increase in the deflection. The second curve is a single spring. The third is a pair of springs stacked in series - double the deflection with no increase in load. The fourth is a set of three springs in series and the fifth is a set of four springs in series.
Belleville Springs must be installed with the convex side facing the bolt head or nut. In some applications a flat washer is used under the OD of the Belleville Spring to help spread the load. If a flat washer is used, the OD should be no smaller than the OD of the Belleville Spring, and the flat washer should be thicker than the Belleville Spring.
Solon Manufacturing Company produces Belleville Springs for inventory in many sizes and materials. Solon also designs and manufactures Belleville Springs to customer specifications. Material certifications, certificates of compliance and load-deflection curves are available upon request at no charge.
Contact Us:
440-286-7149
800-323-9717
Email:
tdingers@solonmfg.com
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