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    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

7300 rpm

Limiting Speed - Grease

6200 rpm

Taper

1:12

Precision

ISO Class 4

Configuration

Two

Oil Hole

w/o Oil Hole

Radial Internal Clearance

C9NA

Static Load Rating

25000 lbf111000 N111.00 kN

Dynamic Load Rating

16900 lbf75000 N75.00 kN

Enclosure

Open

Weight

1.532 lb0.695 kg

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

2.5591 in65 mm

D

3.937 in100.000 mm

B

1.0236 in26 mm

C

1.0236 in26 mm

Ew

3.5827 in91.000 mm

r

0.0433 in1.100 mm

da min

2.8150 in71.500 mm

db min

2.8937 in73.500 mm

Da max

3.6220 in92.000 mm

Db min

3.6220 in92.000 mm

Db max

3.6811 in93.500 mm

ras max

0.0394 in1 mm