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

15000 rpm

Limiting Speed - Grease

12000 rpm

Precision

ISO Class 0

Configuration

Two

Oil Hole

w/o Oil Hole

Radial Internal Clearance

CN

Static Load Rating

8300 lbf37000 N37.00 kN

Dynamic Load Rating

6950 lbf31000 N31.00 kN

Enclosure

Open

Weight

0.439 lb0.199 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

1.1811 in30 mm

D

2.1654 in55.000 mm

B

0.748 in19 mm

C

0.748 in19 mm

Ew

1.9094 in48.500 mm

r

0.0394 in1.000 mm

da min

1.3780 in35.000 mm

db min

1.4370 in36.500 mm

Db min

1.9291 in49.000 mm

Db max

1.9685 in50.000 mm

ras max

0.0394 in1 mm