High Precision Angular Contact Ball Bearing 708
Product Description:
High Precision Angular Contact Ball Bearing 708
An angular contact ball bearing uses axially asymmetric races. An axial load passes in a straight line through the bearing, whereas a radial load takes an oblique path that tends to want to separate the races axially. So the angle of contact on the inner race is the same as that on the outer race. Angular contact bearings better support "combined loads" (loading in both the radial and axial directions) and the contact angle of the bearing should be matched to the relative proportions of each. The larger the contact angle (typically in the range 10 to 45 degrees), the higher the axial load supported, but the lower the radial load. In high speed applications, such as turbines, jet engines, and dentistry equipment, the centrifugal forces generated by the balls changes the contact angle at the inner and outer race.
Ceramics such as silicon nitride are now regularly used in such applications due to their low density (40% of steel). These materials significantly reduce centrifugal force and function well in high temperature environments. They also tend to wear in a similar way to bearing steel—rather than cracking or shattering like glass or porcelain.Most bicycles use angular-contact bearings in the headsets because the forces on these bearings are in both the radial and axial direction.
ModelSize(mm)Weight(kg)708/1000X2AC/P51000*1220*50155SN708/1000X2AC/P51000*1220*50
About Us
Beijing Shangheng De Trade Co., Ltd. is a well-known manufacturer of bearing products. Dedicated to strict quality control and thoughtful customer service, our experienced staff members are always available to discuss your requirements and ensure full customer satisfaction. Guaranteeing stable and timely supply, credible quality and sincere service, our products sell well in both domestic and overseas markets. We also provide OEM and ODM services.Our products are widely recognized and trusted by users and can meet continuously developing economic and social needs. We welcome new and old customers from all walks of life to contact us for future business relationships and achieving mutual success.
