Application of High-speed Angular Contact Ball Bearings
High-speed angular contact ball bearings are the most commonly used bearing type for high speed, high precision, and high rigidity oscillating motion in various mechanical applications, such as robots, automation equipment, optical and opto-electronic equipment.
The high-speed angular contact ball bearings is a special ball bearing with a contact angle of 10, 15, or 20 degrees. It is made up of a standard raceway, one inner race and one outer race, a group of angular contact ball elements, and a cage. The balls in the bearing contact the inner and outer raceways at three points forming an effective contact angle of 10°, 15° or 20°. This kind of bearing could support combined radial and axial load but the radial load should not exceed 55% of the combined radial and axial load.
High-speed angular contact ball bearings typically feature tight bearing specifications, extremely high running accuracy levels and a higher speed limit than other bearing types. There are typically two types of high-speed angular contact ball bearings, one type is a typical interference fit bearing with extremely tight bearing clearances and certain clearance guidance measures, and the other type is manufactured with higher tolerances, tighter internal concentricity requirements and minimum play.
Typical applications for high-speed angular contact ball bearings include robotics, semiconductor equipment, medical equipment, printing presses, machine tools, automotive transmissions, textile machinery and laboratory equipment. For example, in robots, high-speed angular contact ball bearings must operate accurately and repeatedly, withstand varying radial and axial loading forces and dissipate heat generated from rotation.
High-speed angular contact ball bearings can reduce motor vibration and increased noise while increasing their service life. An effective harmonic suppression can be achieved by installing a combination of different pre-loads, called Crossed and Interference mounting. The Interference mounting has the effect of compressing two bearings together and providing effective shaft end-play control. Crossed mounting is used when uniformity of radial and axial pre-load is critical.
The high-speed angular contact ball bearing also has high withstand voltage and low mechanical noise. It can be lubricated with oil or grease in high speed dust and high temperatures, sealed structure, light weight and easy install, which has high mechanical performance and vibration reduction.
To sum up, the high-speed angular contact ball bearing has become a mature high-tech product. It is widely used in machining, robot, computer and high precision automatic instruments and other ultra-precision mechanical equipment. It has many advantages, such as high speed, high precision, high rigidity, and low running noise, etc. Therefore, this kind of bearing has become an indispensable component in modern manufacturing field.
