Vòng bi cầu rãnh sâu hai dãy

  • Đặc trưng: Vòng bi rãnh sâu hai dãy có thiết kế tương tự như vòng bi rãnh sâu một dãy, có khe không điền đầy, do đó chúng có thể chịu tải trọng trục theo cả hai hướng.
  • Khu vực chính:

VÒNG BI CẦU RÃNH SÂU HAI DÃY

HRB deep groove ball bearings are of non-separable type, in which the depth of the inner and outer ring grooves enables the bearings to accommodate radial loads, axial loads in either direction and combined loads, suitable at high speeds.

Double row deep groove ball bearings

The design of double row deep groove ball bearings is similar to that of HRB single row deep groove ball bearings, without filling slot, so that they can carry axial loads in either direction.

Low noise bearings

HRB supplies low noise bearings, such as acceleration level low noise bearings with designation suffix Z1, Z2 and Z3, much lower with designation suffix Z4 to meet the silent requirement of air conditioner motors. High speed level low noise bearings can also be supplied, with designation suffix V1,V2 and V3. can make more variances in every type deep groove ball bearings, on customer`s request. Various tolerance classes and vibration levels of these bearings can be provided as well.

Dimensions

The boundary dimensions of HRB deep groove ball bearings listed in bearing tables are in accordance with ISO15-1981. The dimensions of the snap ring grooves and snap rings are in conformity with ISO464-1976.

Angular misalignment

Double row deep groove ball bearings can take 2 minutes (2′) of radian of angular misalignment. Large angular misalignment would increase the unacceptable load between the balls and grooves, so that bearing life is shortened.

Precaution: the bearing noise level will be increased when the angular misalignment arise considerable between the inner and outer rings during bearings running.

Tolerances

HRB standard deep groove ball bearings are made to normal tolerance class P0. And high precision products of tolerance classes P6, P5, P4 and P2 can also be supplied.

Internal clearance

HRB double row deep groove ball bearings are usually manufactured to normal level radial internal clearance. Among them back-to-back or face-to-face paired bearings are often supplied with two ways: less axial internal clearance with designation suffix CA, or light preload with designation suffix GA shown in Table Internal axial clearances and preloads for 60, 62 and 63 series paired bearings are given in the below table.

Cages

Usually deep groove ball bearings are fitted with a pressed ribbon cage, e.g.: nylon 66 or machined brass cages.

Catalog of Double row deep groove ball bearing