What is the purpose of a Belleville spring?

The purpose of a Belleville washer is to absorb loads by acting as a spring. When a load is applied a Belleville washer, the washer compresses. At the same time, the Belleville washer exerts an equal amount of force against the object.

What type of spring is a Belleville?

Belleville spring, disc spring, and conical compression washer are all names for the same type of spring. A Belleville spring is a conical shaped disc that will deflect (flatten) at a given rate. This spring rate is usually very high, allowing the spring to produce very large loads in a very small space.

What is a Belleville washer used for?

Their conical configuration enables them to support high loads with relatively small deflections and solid heights compared to helical springs. Belleville Washers are often used to solve vibration, thermal expansion, relaxation and bolt creep problems.

What is another term for Belleville spring?

A Belleville washer, also known as a coned-disc spring, conical spring washer, disc spring, Belleville spring or cupped spring washer, is a conical shell which can be loaded along its axis either statically or dynamically. A Belleville washer is a type of spring shaped like a washer.

Can Belleville washers be reused?

Yes, Belleville conical washers can be reused, repeatedly, as long as they are not damaged. Overloading and over-torquing these washers can wear them out over time. As long as they are used properly and checked before reuse, these fasteners can be used again and again to complete projects.

Can Belleville washers be flattened?

In a Belleville washer application, the manufacturer may say to flatten the washer and then back off slightly. Make sure you don’t back off too far, because when you flatten the washer a second time, it will have less clamping force than it was designed to have.

How do I choose a Belleville washing machine?

A single Belleville Washer has a specific load for a given deflection. Two washers stacked in parallel will yield double the load of a single washer for the same deflection; three washers will yield triple the load; four washers will yield four times the load, etc.

How do I choose a disk spring?

For static, or dynamic applications, select a disc spring that at 75% of its total available deflection offers the maximum force and/or deflection required. Between 75% deflected and the ‘flattened’ position, the actual force/stress characteristics become considerably greater than those calculated.

Are Belleville washers Lock washers?

How do Belleville disc springs work?

What is a conical spring washer?

Belleville washers or conical washers are the strongest type of spring washers available. These types of washers are also referred to as disc springs and feature a conical shape, which allows them to work like a heavy-duty spring and provide high spring loads in tight places.

How does a disk spring work?

Disc Springs are conically-shaped, washer-type components designed to be axially loaded. What makes Disc Springs unique is that based on the standardized calculations of DIN EN 16984 (formerly DIN 2092), the deflection for a given load is predictable and the minimum life cycle can be determined.

What are cone washers?

Cone washers and rings are used to create a leak proof seal at the water supply inlet. They are used on both faucets and toilets. Replacing a worn washer is easy. New washers eliminate leaks which waste both water and energy and can damage floors.

What is the meaning of Belleville?

French: habitational name from several places called Belleville (for example in Rhône and Meuse) or named with this word (for example Belleville sur Vie in Vendée), from Old French beu, bel ‘lovely’ + ville ‘settlement’, ‘domain’.

Can you stack wave springs?

Yes, Single-Turn Gap-Type wave springs can be stacked to achieve similar characteristics to disc springs. Similar to a Nested Wave Spring design, wave springs can be stacked to increase the spring rate.

Do spring washers work?

The body of evidence, based upon both experience and experimental results, is that they do not prevent loosening and can be shown to actually speed up the rate of loosening in many cases. Junker originally showed in his work published in 1969 that these washers are ineffective in preventing loosening.

How do conical washers work?

What is spherical washer?

Spherical washers from SKF are designed to create an exact, parallel plane between the bolt head and the face of the nut. These washers automatically adjust and compensate for the angular deviation between the planes and prevent the bolt from bending.

What is the cupped side of a washer?

When cupped washers are present, every time the hold down bolt or nut is tightened, it forces the washer to flex down inside the bolt hole of the motor foot bending it into a slight concave or “bowl” shape. At this point the washer is ruined and should be replaced.

What is the difference between a flat washer and a spring washer?

Plain and spring washers are both used to distribute the load of a fastener. The difference lies in their shape. Plain washers are flat, whereas spring washers are curved. … Spring washers are unique because they provide an axial load that counters vibrations and, thus, prevents fasteners from loosening.

What is countersunk washer?

Definition: Countersunk washers are available in three styles to fit most applications. Countersunk washers serve the same function as a flat washer, but they provide a bearing surface for flat head screws. An additional application is providing a sealing function for flat head screws.

What type of lock washer is best?

We found that the most effective anti-vibration solutions are anaerobic adhesives and mechanical washers. Overall, Nordlock washers were extremely effective. They’re as easy to install as any standard washer—and easier to install than the next-best contender, the Loctite 2760 adhesive.

What are disc springs used for?

The properties of the disc spring make it unique in applications where space is limited – but where high force is wanted. By using disc springs you can achieve high force and very little travel (deflection). Disc springs can also be used as vibration dampers or to provide a damping effect.

Which way do curved washers go?

the curved washers should be placed to follow the curve of the hole, not go against it.

Is standard for disc spring?

The Standard Product Range of disc springs (sizes to DIN 2093 and Factory Standards) includes 246 sizes with outside diameters between 8 and 250 mm. These springs are manufactured from Ck 67 and 50 CrV 4, and are typically available from stock.

What is a spring washer?

Washer types. … Spring washers, which have axial flexibility and are used to prevent fastening or loosening due to vibrations. Locking washers, which prevent fastening or loosening by preventing unscrewing rotation of the fastening device; locking washers are usually also spring washers.

How is Belleville spring force calculated?

The force produced by a h/t = 1.414 ratio Belleville spring is within ± 10% of the force to flat value for deflections of 55% to 145% of the deflection to flat. This is a useful characteristic if a nearly constant force is required over this range of deflection.

What is the difference between a lock washer and a star washer?

Internal use lock washers have teeth made to bite into the nut/screw head and surface it contacts. They work best on small screws or screws used in electrical grounding. External use lock washers (also called star washers) have teeth made to bite into the bearing surface.

Which is better lock nut or lock washer?

Lock washers are a one time deal, replace after removing. The most common split lock washer actually bites into both the nut and bottom surface to provide the lock. Nylon lock nuts work best in high vibration areas but are a pain to assemble and like Brad said deteriorate over time.