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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

Cylindrical

Material

Hardened Alloy Steel

Cage Material

High Strength, 2 piece, Machined Brass

Limiting Speed - Oil

17000 RPM

Limiting Speed - Grease

14000 RPM

Precision

ISO Class 0

Configuration

Two

Oil Hole

w/o Oil Hole

Radial Internal Clearance

CN

Static Load Rating

6750 lbf30000 N30.00 kN

Dynamic Load Rating

5800 lbf25800 N25.80 kN

Enclosure

Open

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

0.9843 in25.000 mm

D

1.8504 in47.000 mm

B

0.6299 in16.000 mm

C

0.6299 in16.000 mm

Ew

1.6260 in41.300 mm

r

0.0236 in0.600 mm

da min

1.1417 in29.000 mm

db min

1.1811 in30.000 mm

Db min

1.6535 in42.000 mm

Db max

1.6929 in43.000 mm

ras max

0.0236 in0.600 mm