Classification and application of bearings



Core Tip: The most representative rolling bearing of deep groove ball bearing is widely used to withstand radial load and bidirectional axial load. It is suitable for high speed rotation and low noise and low vibration.
The most representative rolling bearing of deep groove ball bearing is widely used to withstand radial load and bidirectional axial load. It is suitable for high speed rotation and low noise and low vibration. Sealed bearing with steel dust cover or rubber sealing ring Pre-filled with a proper amount of grease outer ring with snap ring or flange bearing, which is easy to axially position, and easy to install in the outer casing. The maximum load type bearing is the same size as the standard bearing, but there is a filling in the inner and outer rings. Groove, increased ball loading, improved rated load Mainly applicable cage: steel stamping cage (waveform, crown shape...single row; S-shaped...double row) copper alloy or phenolic resin cutting cage, synthetic resin forming and retaining Main use of the frame: Automobile: rear wheel, transmission, electrical components, electrical: general-purpose motor, household appliances, other: instruments, internal combustion engines, construction machinery, railway vehicles, loading and unloading machinery, agricultural machinery, various industrial machinery angular contact ball bearing rings There is a contact angle with the ball. The standard contact angle is 15°, 30° and 40°. The larger the contact angle, the greater the axial load capacity. The higher the contact angle Smaller, more favorable for high-speed rotating single-row bearing can withstand radial load and one-way axial load DB combination, DF combination and double-row bearing can withstand radial load and two-way axial load DT combination for one-way axial load is large, High-speed ACH-type bearings have a small ball diameter and a large number of balls. They are mostly used for machine tool spindle angular contact ball bearings. They are suitable for high-speed and high-precision rotating structures. Common inner and outer rings, can withstand radial load and two-way axial load. No-fill groove bearing. Also sealed. Mainly applicable cage: steel stamping cage (bowl shape...single row; S-shaped, crown-shaped...double row) copper Alloy or phenolic resin cutting cage, synthetic resin forming cage Main use: single row: machine tool spindle, high frequency motor, gas turbine, centrifugal separator, small car front wheel, differential pinion shaft double row: oil pump, Luo Ventilators, air compressors, various types of transmissions, fuel injection pumps, printing machinery, four-point contact ball bearings can withstand radial loads and two-way axial loads. Angular contact ball bearings with front or back combination are suitable for composite loads with a large axial load or large axial load. These bearings can form one contact angle (α) when subjected to axial loads in any direction. Therefore, the ferrule and the ball always touch the two sides of the three-point point on any contact line. The main suitable cage: the copper alloy cutting cage main use: aircraft jet engine, gas turbine self-aligning ball bearing because the outer ring raceway surface is spherical, With self-aligning performance, it can automatically adjust the shaft-concave tapered bore bearing caused by the deflection or misalignment of the shaft or the outer casing. It can be easily mounted on the shaft steel stamping cage by using fasteners: daisy...12,13 22...2RS, 23...2RS sunflower shape...22,23 Woodworking machinery, textile machinery drive shaft, vertical belt bearing, self-aligning bearing, cylindrical roller bearing, cylindrical roller, roller contact with the raceway, radial load capacity, ie Suitable for heavy load and impact load, also suitable for high-speed rotation N-type and NU-type axial movement, can adapt to the change of relative position of shaft and shell caused by thermal expansion or installation error It is most suitable for use as a free end bearing NJ type and NF type can withstand a certain degree of unidirectional axial load, NH type and NUP type can withstand a certain degree of bidirectional axial load. The inner ring or outer ring can be separated, and it is easy to assemble and disassemble NNU type. And NN type is strong in rigidity against radial load