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

NN4944MB

Double-Row Cylindrical Roller Bearings
main product photo
Images shown are representations. Designs and specifications may differ from actual products.
Parts Number
NN4944MBCC1P5 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

NN4944MBCC1P5

Boundary Dimensions

NN: Inner ring rib type Bearing Type
d 220 mm Bore diameter
D 300 mm Outside diameter
B 80 mm Width
r(min.) 2.1 mm Chamfer Dimension

Basic Load Ratings

Cr 690 kN Basic Dynamic Load Rating
C0r 1330 kN Basic Static Load Rating

Speeds

Grease 2500 min-1 Limiting Speed
Oil (Oil-air) 3100 min-1 Limiting Speed

Dimensions

Ew 279 mm Roller Circumscribed Circle Diameters
s 3.3 mm Axial Displacement

Abutment and Fillet Dimensions

da(min.) 231 mm Diameter of Shaft Abutment
d1a(min.) 234 mm Diameter of Shaft Abutment
Da(min.) 281 mm Diameter of Housing Abutment
Da(max.) 289 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
37 g/brg Recommended Grease Quantities

Holes Dimensions

dh 5 mm Hole Diameter
W 9 mm Oil Groove Width
m 4 Number of Holes

Mass

15.1 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_CRB_DR_NN49
NSK Product Type Super Precision Bearing
Designations NN4944MB

© NSK Ltd.

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