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

8600 rpm

Limiting Speed - Grease

7300 rpm

Taper

1:12

Precision

ISO Class 0

Configuration

Two

Oil Hole

w/o Oil Hole

Radial Internal Clearance

CN

Static Load Rating

21700 lbf96500 N96.50 kN

Dynamic Load Rating

15600 lbf69500 N69.50 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

2.1654 in55 mm

D

3.5433 in90.000 mm

B

1.0236 in26 mm

C

1.0236 in26 mm

Ew

3.1890 in81.000 mm

r

0.0433 in1.100 mm

da min

2.4213 in61.500 mm

db min

2.5000 in63.500 mm

Da max

3.2283 in82.000 mm

Db min

3.2283 in82.000 mm

Db max

3.2874 in83.500 mm

ras max

0.0394 in1 mm