Product Description:
The machine tool spindle bearing is a special angular ball bearing specially designed for the machine tool spindle. Its main characteristics are high accuracy, high rotation speed, and good shafting rigidity to meet the needs of precision machining of the machine tool. At present, the high-precision precision angular ball bearings, group auxiliary angular ball bearings, universal angular ball bearings, honey sealed angular contact ball bearings, etc. are widely used in precision machine tools and CNC machining centers.
Advantages of ceramic ball bearing
(1) High temperature resistance
The ceramic ball is hot and has a small expansion coefficient. In a high-temperature environment, the bearing ball will not expand due to temperature. This greatly improves the service temperature of the whole bearing. The temperature of ordinary bearings is about 160 degrees, and the temperature of ceramic balls can reach more than 220 degrees.
(2) High speed
Ceramic balls have oil-free self-lubricating properties, and the friction coefficient of ceramic balls is small, so the ceramic ball bearing has a very high speed. According to statistics, the speed of bearings with ceramic balls is more than 1.5 times that of general bearings.
(3) Long life
The ceramic ball can be free of any grease, that is to say, even if the grease is dry, the bearing can still run, thus avoiding the premature failure of the bearing caused by the drying of the grease in ordinary bearings. According to the actual use data, the service life of the bearings using ceramic balls is 2-3 times that of ordinary bearings.
(4) Insulation
The last and most important point is insulation. Bearings using ceramic balls can insulate the inner and outer rings of bearings, because ceramic balls are insulators. Using ceramic balls between the inner and outer rings of bearings can achieve the insulation effect. This enables the bearing to be used in a conductive environment. Rolling bearing is composed of ferrule, rolling element, retainer, grease and seal. When the rolling element is made of ceramic material, this rolling bearing is defined as ceramic ball bearing.