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圆柱滚子轴承 圆柱滚子轴承

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NNU4972-S-M-SP_Cylindrical Roller Bearings

Main Dimensions & Performance Data

d

360 mm

D

480 mm

B

118 mm

Cr

1130000 N

Cor

2800000 N

Cur

300000 N

Grease lubrication speed

1540 rpm

Oil lubrication speed

1820 rpm

Mounting dimensions

da

396 Minimum diameter of shaft shoulder

r1min

3 Minimum chamfer dimension

H

12 diameter of housing shoulder tolerance

F

399 Inner race diameter

Da

449 Maximum diameter of bearing block shoulder

ns

17.7 Slot width of lubricating groove

ds

9.5 Lubrication hole diameter

H

12 diameter of housing shoulder tolerance

s

6.3 Axial displacement

ra1max

2.5 Maximum cavity radius

Temperature range

Tmin

-30 °C Minimum operating temperature

Tmax

150 °C Maximum operating temperature
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