Toggle Nav
Search
Advanced Search
Menu
Account
Settings
  • Sign In >

NN3948MB

Double-Row Cylindrical Roller Bearings
main product photo
Images shown are representations. Designs and specifications may differ from actual products.
Parts Number
NN3948MBCC1P4Y Double-Row Cylindrical Roller Bearings
Add to Compare
You can use this service by registering as a member.
Add to Compare
You can use this service by registering as a member.
Tap the image to enlarge it.

Parts Number

NN3948MBCC1P4Y

Boundary Dimensions

NN: Inner ring rib type Bearing Type
d 240 mm Bore diameter
D 320 mm Outside diameter
B 60 mm Width
r(min.) 2.1 mm Chamfer Dimension

Basic Load Ratings

Cr 525 kN Basic Dynamic Load Rating
C0r 975 kN Basic Static Load Rating

Speeds

Grease 2400 min-1 Limiting Speed
Oil (Oil-air) 2900 min-1 Limiting Speed

Dimensions

Ew 300 mm Roller Circumscribed Circle Diameters
s 2.3 mm Axial Displacement

Abutment and Fillet Dimensions

da(min.) 251 mm Diameter of Shaft Abutment
d1a(min.) 254 mm Diameter of Shaft Abutment
Da(min.) 302 mm Diameter of Housing Abutment
Da(max.) 309 mm Diameter of Housing Abutment
ra(max.) 2 mm Radius of Shaft or Housing Fillet

Additional information

CC1(max.) 50 μm Clearance in Bearings with Cylindrical Bores
CC1(min.) 15 μm Clearance in Bearings with Cylindrical Bores
40 g/brg Recommended Grease Quantities

Holes Dimensions

dh 4 mm Hole Diameter
W 8 mm Oil Groove Width
m 4 Number of Holes

Mass

12.3 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_CRB_DR_NN39
NSK Product Type Super Precision Bearing
Designations NN3948MB

© NSK Ltd.

Back to top
Copyright © 2013-present Magento, Inc. All rights reserved.