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

Technical Specifications

Type

Cylindrical Roller Bearing

Bore Type

Cylindrical

Material

Hardened Alloy Steel

Cage Material

High Strength, 2 piece, Machined Brass

Limiting Speed - Oil

6300 rpm

Limiting Speed - Grease

5400 rpm

Precision

ISO Class 4

Configuration

Two

Oil Hole

w/o Oil Hole

Radial Internal Clearance

C1NA

Static Load Rating

33500 lbf149000 N149.00 kN

Dynamic Load Rating

21700 lbf96500 N96.50 kN

Enclosure

Open

Weight

2.414 lb1.095 kg

Operating Temperature Range

-40 to 250 ºF-40 to 120 ºC

Dimensional Specifications


Double Row Cylindrical Roller Bearing w/ Cylindrical Bore - Type NN - Dimensions

d

2.9528 in75 mm

D

4.5276 in115 mm

B

1.1811 in30 mm

C

1.1811 in30 mm

Ew

4.1339 in105.000 mm

r

0.0433 in1.100 mm

da min

3.2087 in81.500 mm

db min

3.3071 in84.000 mm

Db min

4.1732 in106.000 mm

Db max

4.2717 in108.500 mm

ras max

0.0394 in1 mm