the characteristics of double row angular contact ball bearing can be also bear the combined load of radial and axial load, limit shaft of both axial displacement.
compared with bidirectional thrust ball bearing, this kind of bearing limit rotational speed is higher, the contact angle is 32 °, good rigidity, affordable overturn torque, widely used in the car of the front wheel hub (some models with same size also double row circular cone roller bearings).
the structure of double row angular contact ball bearing variant has four kinds:
(1) type a standard design of bearing outside diameter less than or equal to 90 mm. no ball gap, so can bear equal two-way axial load. using light glass fiber reinforced nylon 66 cage, bearing temperature rise is small.
(2) the standard design of the bearing type a diameter greater than 90 mm. side with ball gap, equipped with steel plate stamping cage or entity brass cage.
(3) e reinforced structure, the side with the ball gap, can hold more ball, therefore higher bearing capacity.
(4) sides with dust cover and with seals on both sides of type a and type e design on both sides of double row angular contact ball bearings can take dust cover (non-contact) or sealing ring (contact). the interior of the sealed bearing are filled with rust lithium base grease, operating temperature in general - 30 ~ + 110 ℃. don't need to lubrication during use, before installation should not be heating, should not be clean.
double row angular contact ball bearing should be paid attention to when installation, although the bearing can be subject to bi-directional load, but if one side has put the ball gap, should be paid attention to, don't let the noise of main axial load through a gap on one side of the river bank.
