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圆柱滚子轴承 圆柱滚子轴承

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NNU4938-S-M-SP_Cylindrical Roller Bearings

Main Dimensions & Performance Data

d

190 mm

D

260 mm

B

69 mm

Cr

410000 N

Cor

880000 N

Cur

106000 N

Grease lubrication speed

2900 rpm

Oil lubrication speed

3450 rpm

Mounting dimensions

da

210.5 Minimum diameter of shaft shoulder

r1min

2 Minimum chamfer dimension

H

12 diameter of housing shoulder tolerance

F

212 Inner race diameter

Da

242 Maximum diameter of bearing block shoulder

ns

9.5 Slot width of lubricating groove

ds

4.8 Lubrication hole diameter

H

12 diameter of housing shoulder tolerance

s

3.2 Axial displacement

ra1max

2 Maximum cavity radius

Temperature range

Tmin

-30 °C Minimum operating temperature

Tmax

150 °C Maximum operating temperature
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