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圆柱滚子轴承 圆柱滚子轴承

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NJ248-E-M1_Cylindrical Roller Bearings

Main Dimensions & Performance Data

d

240 mm

D

440 mm

B

72 mm

Cr

1140000 N

Cor

1610000 N

Cur

171000 N

Reference speed

1220 rpm

Limiting speed

2320 rpm

Mounting dimensions

damin

257 Minimum diameter of shaft shoulder

rmin

4 Minimum chamfer size

damax

290 Maximum diameter of shaft shoulder

r1min

4 Minimum chamfer size

s

6 Axial displacement

Damax

423 Maximum diameter of bearing block shoulder

E

393 Outer race diameter

F

293 Inner race diameter

D1min

376.6 Minimum shoulder diameter of outer ring

dcmin

315 Minimum shaft shoulder

d1

312 Maximum flange diameter of inner ring

ramax

3 Maximum cavity radius

Temperature range

Tmin

-30 °C Minimum operating temperature

Tmax

150 °C Maximum operating temperature

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