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圆柱滚子轴承 圆柱滚子轴承

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NNU4944-S-K-M-SP_Cylindrical Roller Bearings

Main Dimensions & Performance Data

d

220 mm

D

300 mm

B

80 mm

Cr

510000 N

Cor

1140000 N

Cur

133000 N

Grease lubrication speed

2550 rpm

Oil lubrication speed

3000 rpm

Mounting dimensions

da

243 Minimum diameter of shaft shoulder

r1min

2.1 Minimum chamfer dimension

H

12 diameter of housing shoulder tolerance

F

245 Inner race diameter

Da

279 Maximum diameter of bearing block shoulder

ns

12.2 Slot width of lubricating groove

ds

6.3 Lubrication hole diameter

H

12 diameter of housing shoulder tolerance

s

4.3 Axial displacement

ra1max

2.1 Maximum cavity radius

Temperature range

Tmin

-30 °C Minimum operating temperature

Tmax

150 °C Maximum operating temperature
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