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

1500 rpm

Limiting Speed - Grease

1200 rpm

Precision

ISO Class 0

Configuration

Two

Oil Hole

w/o Oil Hole

Radial Internal Clearance

CN

Static Load Rating

575000 lbf2560000 N2560.00 kN

Dynamic Load Rating

299000 lbf1330000 N1330.00 kN

Enclosure

Open

Weight

156.087 lb70.800 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

11.811 in300.000 mm

D

18.1102 in460.000 mm

B

4.6457 in118 mm

C

4.6457 in118 mm

Ew

16.4567 in418.000 mm

r

0.1575 in4.000 mm

da min

12.4409 in316.000 mm

db min

12.8346 in326.000 mm

Db min

16.5748 in421.000 mm

Db max

17.4803 in444.000 mm

ras max

0.1181 in3 mm