Belleville Springs and Belleville Washers are conical elastic fasteners, usually made of spring steel and used to bear axial forces. Compared with the Wave Springs, the Belleville Springs and Belleville Washers can produce more force in a relatively small area. Both of them have the characteristics of long life, small deformation, high bearing capacity and so on. Some people think that DIN 6769 is the German standard Belleville Spring, which is wrong, DIN 6769 is essentially a loose-proof washer, known as conical elastic washer for bolt connection, while DIN 2093 is a Belleville Spring. That is to say, one is a spring and the other is a washer. Although the washer is elastic, the actual use environment and working conditions are very different. When the Belleville Washers is pressed flat, its load is 70-90% of the bolt load. It is suitable for high-strength bolts of grade 8.8-12.9 and is the perfect choice for bolt connection.
Belleville Washer has the advantages of high axial load, long service life, high load drop compensation (caused by temperature difference), effective reduction of the negative impact of dynamic load, anti-loosening and locking, high elasticity, uniform load concentration and high safety. Because the Belleville Washer has the characteristics of anti-loosening and anti-vibration effect, low manufacturing cost and convenient installation, it is used in more and more fields, including automobile, electric power, construction, machine tool, aerospace, defense system, medical equipment, and other industries.
(1) Belleville Washers DIN 6796 (HDS series) is an anti-loose washer designed for bolt and screw connections. After the bolt screw is connected, Belleville Washers can compensate the loss of preload force, and thermal expansion and contraction of seals caused by wear, deformation and creep of wearing parts. The HDS series increases the elasticity of the screw several times. It can effectively replace the ordinary spring washer, but it is not suitable for locking washer and flat washer combination.
(2) The temperature resistance range of High Torsion Belleville Washer is-200~300℃. The High Torsion Belleville Washer has stronger elastic tension, which is applied in the anti-elastic fastening connection equipment of strong power load high-speed train. High Torsion Belleville Washer is a wide range of applications. It is a high torque anti-loose functional washer used in conjunction with bolts. It is suitable for high strength hard connection design.
(3) The temperature resistance range of the Extra High Torsion Belleville Washer is-200℃ ~600℃. The Extra High Torsion Belleville Washer is made of high temperature resistant material, which can play an effective compensation role in the temperature resistant range, keeping the pre-tightening force of the bolt on the washer in a certain range, thus preventing bolt fatigue and washer failure. at the same time, it also greatly improves the maintenance cycle of the equipment. The Extra High Torsion Belleville Washer can effectively absorb mechanical vibration, avoid bolt loosening caused by mechanical vibration, and ensure durable and reliable sealing.
The above is according to the torsion range of the Belleville Washer classification, can also be according to different functions, divided into VS, S series Serrated Safety Washers, Bearing Preloaded Belleville Washer, Flange Washer, etc. If you want to choose the most suitable Belleville Washer, you can contact SHANGHAI HEGONG DISC SPRING MANUFACTURE CO., LTD., and we have professional designers to determine the Belleville Washer used under specific conditions for you.
