Search Catalog
        
 All Categories    Double Row Cylindrical Roller Bearings
All Categories > Cylindrical Roller Bearings > Double Row Cylindrical Roller Bearings > Item # NNU4948  
Download PDF Download PDF     Printable Page     Email Email This Page     Save To Favorites Save To Favorites

Item # NNU4948, Double Row Cylindrical Roller Bearing w/ Cylindrical Bore - Type NNU



    The rollers in the NN type bearing are guided by the ribs of the inner ring.




Unit of Measure: Imperial Metric Both

Order Now  · Technical Specifications  · Dimensional Specifications

Order Now

Ordering Options

Contact NTN Customer Relations



Technical Specifications

Type

Cylindrical Roller Bearing

Bore Type

Cylindrical

Material

Hardened Alloy Steel

Cage Material

High Strength, 2 piece, Machined Brass

Limiting Speed - Oil

2000 RPM

Limiting Speed - Grease

1700 RPM

Precision

ISO Class 0

Configuration

Two

Tolerance

ISO Class 0 (RBEC 1)

Oil Hole

w/o Oil Hole

Radial Internal Clearance

CN

Static Load Rating

315000 lbf
1410000
N
1410.00
kN

Dynamic Load Rating

137000 lbf
610000
N
610.00
kN

Enclosure

Open

Weight

39.022 lb
17.700
kg

Operating Temperature Range

-40 to 250 ºF
-40 to 120
ºC


Dimensional Specifications

d

9.4488 in
240.000
mm

D

12.5984 in
320.000
mm

B

3.1496 in
80.000
mm

C

3.1496 in
80.000
mm

Fw

10.4331 in
265.000
mm

r

0.0827 in
2.100
mm

da min

9.8819 in
251.000
mm

db min

10.1575 in
258.000
mm

Da max

12.1654 in
309.000
mm

Db min

11.9685 in
304.000
mm

Db max

12.1654 in
309.000
mm

ras max

0.0787 in
2.000
mm