1. Features of deep groove ball bearings: Deep groove ball bearings are the most representative rolling bearings and are widely used. It can withstand radial load and bidirectional axial load, and is suitable for occasions requiring low noise, high-speed rotation and low vibration. The sealed bearing with steel dust cover or rubber seal is pre-filled with an appropriate amount of grease. Bearings with snap rings or flanges on the outer ring are easy to locate axially and to install in the housing. The maximum load type bearing has the same size as the standard bearing, but has a filling groove in the inner and outer rings, which increases the number of balls loaded and the rated load. Mainly applicable cages: steel stamping cages (wave shape, crown shape...single row; S shape...double row), copper alloy or phenolic resin cutting cage, synthetic resin forming cage. Main use: Automobile: rear wheel, transmission, electrical device components. Electrical: general electric motors, household appliances. Others: Instruments, internal combustion engines, construction machinery, railway vehicles, loading and unloading machinery, agricultural machinery, and various industrial machinery. Deep groove ball bearing miniature bearing 2. Features of angular contact ball bearing: There is a contact angle between the ring and the ball. The standard contact angle is 15°, 30° and 40°. The smaller the contact angle, the better the high-speed rotation. The larger the axial load capacity is. Single row bearings can bear radial load and unidirectional axial load, DB combination, DF combination and double row bearings can bear radial load and bidirectional axial load, DT combination is suitable for large unidirectional axial load, and the rated load of a single bearing In the case of insufficient, the high-speed ACH bearing has a small ball diameter and a large number of balls, and is mostly used for machine tool spindles. Angular contact ball bearings are suitable for high-speed and high-precision rotation. The ring and outer ring can bear radial load and bidirectional axial load, and the bearing without filling groove also has a sealed type. Mainly applicable cages: steel stamping cages (bowl shape...single row; S shape, crown shape...double row), copper alloy or phenolic resin cutting cage, synthetic resin forming cage. Main application: single row: machine tool spindle, high frequency motor, gas turbine, centrifugal separator, front wheel of small car, differential pinion shaft. Double row: oil pump, roots blower, air compressor, various transmissions, fuel injection pump, printing machinery. 3. Thrust ball bearing features: It is composed of a washer-shaped raceway ring with a raceway, a ball and a cage assembly. The raceway ring matched with the shaft is called the shaft washer, and the raceway ring matched with the shell is called the seat ring. The two-way bearing is matched with the secret shaft in the middle ring, the one-way bearing can bear one-way axial load, and the two-way bearing can bear two-way axial load (both can not bear radial load). Mainly applicable cages: steel stamping cages, copper alloy or phenolic resin cutting cages, synthetic resin forming cages. Main application: automobile steering pin, machine tool spindle.