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

2100 rpm

Limiting Speed - Grease

1700 rpm

Precision

ISO Class 0

Configuration

Two

Oil Hole

w/o Oil Hole

Radial Internal Clearance

CN

Static Load Rating

335000 lbf1480000 N1480.00 kN

Dynamic Load Rating

183000 lbf815000 N815.00 kN

Enclosure

Open

Weight

65.918 lb29.9 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

8.6614 in220.000 mm

D

13.3858 in340.000 mm

B

3.5433 in90 mm

C

3.5433 in90 mm

Ew

12.2047 in310.000 mm

r

0.1181 in3.000 mm

da min

9.1732 in233.000 mm

db min

9.4488 in240.000 mm

Db min

12.3228 in313.000 mm

Db max

12.8740 in327.000 mm

ras max

0.0984 in2.5 mm