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Roller double row angular contact ball bearings (LR50 series)

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Roller double row angular contact ball bearings (LR50 series)
  • Roller double row angular contact ball bearings (LR50 series)

Roller double row angular contact ball bearings (LR50 series)


Application: Compared with single row bearings, double row angular contact ball bearings have better rigidity and can withstand overturning moments. The bearings are non-separable. Especially suitable for applications with high rigidity requirements. Widely used in the front wheel hubs of cars (some models also use double-row tapered roller bearings of the same size).


Features: The tiltability between the inner and outer rings of double row angular contact ball bearings is limited. The allowable tilt angle depends on the internal clearance of the bearing, the bearing size, the internal design and the forces and moments acting on the bearing, and the maximum allowable tilt angle. It should be ensured that no excessive additional stress is generated in the bearing.


If there is a tilt angle between the inner and outer rings of the bearing, it will affect the life of the bearing, and at the same time, the bearing running accuracy will decrease and the running noise will increase. Double row angular contact ball bearings typically use a nylon cage or a brass solid cage. When installing double row angular contact ball bearings, it should be noted that although the bearing can bear the bidirectional axial load, if there is a ball gap on one side, care should be taken not to let the main axial load pass through the notched side groove. When using the bearing, care should be taken to bear the main load on the side raceway without the ball gap.


Double row angular contact ball bearings are capable of withstanding large radial and axial bidirectional combined loads and moment loads, mainly radial loads, which limit the axial displacement of the shaft or casing in both directions with a contact angle of 30 degrees.


In addition, double row angular contact ball bearings also have good rigidity and can withstand overturning moments. The bearings are non-separable. Especially suitable for applications with high rigidity requirements. Widely used in the front wheel hub of a car.


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selectInquiryBearing No.Dimensions(mm) Rated load(KN)Weight
dDBCrCorMass(KG)
LR 5304 KDDU 306804-2Z 20 62 22.2 21100 14500 0.34
LR 5304 KDD 306704-2Z 20 62 22.2 21100 14500 0.34
LR 5304 NPPU 306804-2RS 20 62 22.2 21100 14500 0.34
LR 5005 NPPU 25 52 16 11600 8100 0.15
LR 5205 KDDU 305805-2Z 25 62 20.6 18500 13000 0.34
LR 5205 KDD 305705-2Z 25 62 20.6 18500 13000 0.34
LR 5205 NPPU 305805-2RS 25 62 20.6 18500 13000 0.34
LR 5305 KDDU 306805-2Z 25 72 25.4 27500 19500 0.5
LR 5305 KDD 306705-2Z 25 72 25.4 27500 19500 0.5
LR 5305 NPPU 306805-2RS 25 72 25.4 27500 19500 0.5
LR 5006 NPPU 30 62 19 15800 11800 0.25
LR 5206 KDDU 305806-2Z 30 72 238 24600 21400 0.51
LR 5206 KDD 305706-2Z 30 72 23.8 24600 21400 0.51
LR 5206 NPPU 305806-2RS 30 72 23.8 24600 21400 0.51
LR 5306 KDDU 306806-2Z 30 80 30.2 36500 26500 0.67
LR 5306 KDD 306706-2Z 30 80 30.2 36500 26500 0.67
LR 5306 NPPU 306806-2RS 30 80 30.2 36500 26500 0.67
LR 5007 NPPU 35 68 20 17600 13100 0.3
LR 5207 KDDU 305807-2Z 35 80 27 30500 22400 0.66
LR 5207 KDD 305707-2Z 35 80 27 30500 22400 0.66
LR 5207 NPPU 305807-2RS 35 80 27 30500 22400 0.6
LR 5307 KDDU 306807-2Z 35 90 34.9 44500 33000 0.97
LR 5307 KDD 306707-2Z 35 90 34.9 44500 33000 0.97
LR 5307 NPPU 306807-2RS 35 90 34.9 44500 33000 0.97
LR 5008 NPPU 40 75 21 18400 14600 0.37
LR 5208 KDDU 305808-2Z 40 85 30.2 34500 25500 0.75
LR 5208 KDD 305708-2Z 40 85 30.2 34500 25500 0.75
LR 5208 NPPU 305808-2RS 40 85 302 34500 25500 0.75
LR 5308 KDDU 306808-2Z 40 100 36.5 56000 42000 1.2
LR 5308 KDD 306708-2Z 40 100 36.5 56000 42000 1.2
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