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

Tapered

Material

Hardened Alloy Steel

Cage Material

High Strength, 2 piece, Machined Brass

Limiting Speed - Oil

1700 rpm

Limiting Speed - Grease

1500 rpm

Taper

1:12

Precision

ISO Class 0

Configuration

Two

Oil Hole

w/o Oil Hole

Radial Internal Clearance

CN

Static Load Rating

445000 lbf1990000 N1990.00 kN

Dynamic Load Rating

238000 lbf1060000 N1060.00 kN

Enclosure

Open

Operating Temperature Range

-40 to 250 ºF-40 to 120 ºC

Dimensional Specifications


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

d

10.2362 in260.000 mm

D

15.7480 in400.000 mm

B

4.0945 in104 mm

C

4.0945 in104 mm

Ew

14.3307 in364.000 mm

r

0.1575 in4.000 mm

da min

10.8661 in276.000 mm

db min

11.2205 in285.000 mm

Da max

14.4488 in367.000 mm

Db min

14.4488 in367.000 mm

Db max

15.1181 in384.000 mm

ras max

0.1181 in3 mm