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

1900 rpm

Limiting Speed - Grease

1600 rpm

Taper

1:12

Precision

ISO Class 0

Configuration

Two

Oil Hole

w/o Oil Hole

Radial Internal Clearance

CN

Static Load Rating

360000 lbf1600000 N1600.00 kN

Dynamic Load Rating

192000 lbf855000 N855.00 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

9.4488 in240.000 mm

D

14.1732 in360.000 mm

B

3.622 in92 mm

C

3.6220 in92.000 mm

Ew

12.9921 in330.000 mm

r

0.1181 in3.000 mm

da min

9.9606 in253.000 mm

db min

10.2756 in261.000 mm

Da max

13.1102 in333.000 mm

Db min

13.1102 in333.000 mm

Db max

13.6614 in347.000 mm

ras max

0.0984 in2.5 mm