Ball bearing series
A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races.
The most representative rolling bearing, which is used in a wide range of applications
It can withstand radial and bidirectional axial loads
It is suitable for high-speed rotation and occasions that require low noise and vibration
Sealed bearings with steel shields or rubber seals are pre-filled with the right amount of grease
Bearings with snap rings or flanges on the outer ring are easy to position axially and for easy mounting in the housing
The maximum load bearing has the same dimensions as the standard bearing, but there is a filling groove in the inner and outer rings, which increases the number of balls and increases the load rating
The main applicable cages: steel plate stamping cages (corrugated, crowned...) Uniseriate; S-shaped... Double-column)
Copper alloy or phenolic resin cut cages, synthetic resin forming cages
Main uses: Automotive: rear wheels, transmissions, electrical components
Electrical: general motors, household appliances
Others: Instruments, internal combustion engines, construction machinery, railway vehicles, loading and unloading machinery, agricultural machinery, various industrial machinery
There is a contact angle between the ferrule and the ball, and the standard contact angles are 15°, 30° and 40°
The greater the contact angle, the greater the axial load capacity
The smaller the contact angle, the more favorable it is for high-speed rotation
Single row bearings can withstand radial and unidirectional axial loads
DB combinations, DF combinations and double row bearings can withstand radial and bidirectional axial loads
The DT combination is suitable for occasions where the unidirectional axial load is large and the rated load of a single bearing is insufficient
ACH type bearings for high-speed use have a small ball diameter and a large number of balls, and are mostly used in machine tool spindles
Angular contact ball bearings are suitable for high-speed and high-precision rotation
Structurally, two single-row angular contact ball bearings with a backside combination share the inner and outer rings, and can bear radial loads and bidirectional axial loads
Bearings without slots are also available in sealed versions
Main applicable cages: steel plate stamping cages (bowl-shaped... Uniseriate; S-shaped, crown-shaped... Double-column)
Copper alloy or phenolic resin cut cages, synthetic resin forming cages
Main uses: single row: machine tool spindle, high-frequency motor, gas turbine, centrifugal separator, small car front wheel, differential pinion shaft
Double row: oil pump, roots blower, air compressor, various transmissions, fuel injection pumps, printing machinery
Four-point contact ball bearings
It can withstand radial and bidirectional axial loads
A single bearing can be used in place of a frontal or rear-side angular contact ball bearing
It is suitable for bearing pure axial load or synthetic load with large axial load components
These bearings are subjected to axial loads in any direction to form one of the contact angles (α), so that the ring and the ball are always in contact with each other on either contact line
The main applicable cage: copper alloy cut cage
Main uses: aircraft jet engines, gas turbines
Since the raceway surface of the outer ring is spherical and has self-aligning properties, it is possible to automatically adjust the axis misalignment caused by deflection or misalignment of the shaft or housing
Tapered bore bearings can be easily mounted on the shaft by using fasteners
Steel plate stamping cage: daisy... 12、13、22… 2RS、23… 2RS
Aoi Shape... 22、23
Woodworking machinery, textile machinery transmission shaft, vertical seat self-aligning bearing
Post time: Dec-26-2024
