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

2400 rpm

Limiting Speed - Grease

2100 rpm

Precision

ISO Class 0

Configuration

Two

Oil Hole

w/o Oil Hole

Radial Internal Clearance

CN

Static Load Rating

265000 lbf1180000 N1180.00 kN

Dynamic Load Rating

125000 lbf555000 N555.00 kN

Enclosure

Open

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

7.874 in200.000 mm

D

11.0236 in280.000 mm

B

3.1496 in80 mm

C

3.1496 in80 mm

Ew

10.2756 in261.000 mm

r

0.0827 in2.100 mm

da min

8.3071 in211.000 mm

db min

8.5827 in218.000 mm

Db min

10.3937 in264.000 mm

Db max

10.5906 in269.000 mm

ras max

0.0787 in2 mm