Bearing description:
The design of double row angular contact ball bearings is basically the same as that of single row angular contact ball bearings, but takes up less axial space. Double row angular contact ball bearings can bear radial load and axial load acting in two directions, it can limit the shaft or housing two-way axial displacement, contact Angle is 30 degrees. Can provide high rigidity bearing configuration and can withstand overturning moment.
Double row angular contact ball bearings can bear large radial load, mainly radial and axial combined load and torque load, limiting the axial displacement of two sides of the shaft. It is mainly used in parts that limit the axial displacement of shaft and housing in both directions.
For example, SKF double-row angular contact ball bearings are similar in design to two back-to-back single-row contact ball bearings, but slightly narrower in width than the two single-row bearings. It has better rigidity than single row bearing.
Structure classification:
(1) The standard design of type A bearing with an outside diameter less than or equal to 90mm. There is no ball slot, so it can bear equal two-way axial load. Lightweight glass fiber reinforced nylon 66 cage, bearing temperature rise is very small.
(2) The standard design of type B bearing with an outer diameter greater than 90mm. One side has a ball notch, equipped with steel plate stamping cage or brass solid cage.
(3) Type C is a reinforced structure with ball notches on one side, which can hold more steel balls, so the bearing capacity is higher.
(4) Double row angular contact ball bearings with dust cover on both sides and sealing ring on both sides of type A and type C design can be equipped with dust cover (non-contact) or sealing ring (contact) on both sides. The inside of the sealed bearing is filled with anti-rust lithium grease, and the operating temperature is generally -30 ~ +110℃. During the use of no lubrication, should not be heated before installation, should not be cleaned.
