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圆柱滚子轴承 圆柱滚子轴承

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NNU4921-S-K-M-SP_Cylindrical Roller Bearings

Main Dimensions & Performance Data

d

105 mm

D

145 mm

B

40 mm

Cr

130000 N

Cor

260000 N

Cur

34500 N

Grease lubrication speed

5500 rpm

Oil lubrication speed

6500 rpm

Mounting dimensions

da

117 Minimum diameter of shaft shoulder

r1min

1.1 Minimum chamfer dimension

H

12 diameter of housing shoulder tolerance

F

118 Inner race diameter

Da

134 Maximum diameter of bearing block shoulder

ns

6.5 Slot width of lubricating groove

ds

3.2 Lubrication hole diameter

H

12 diameter of housing shoulder tolerance

s

2 Axial displacement

ra1max

1 Maximum cavity radius

Temperature range

Tmin

-30 °C Minimum operating temperature

Tmax

150 °C Maximum operating temperature
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