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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

3600 RPM

Limiting Speed - Grease

3100 RPM

Precision

ISO Class 5

Configuration

Two

Oil Hole

w/o Oil Hole

Radial Internal Clearance

C1NA

Static Load Rating

107000 lbf475000 N475.00 kN

Dynamic Load Rating

64000 lbf284000 N284.00 kN

Enclosure

Open

Weight

12.840 lb5.824 kg

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

5.1181 in130.000 mm

D

7.8740 in200.000 mm

B

2.0472 in52.000 mm

C

2.0472 in52.000 mm

Ew

7.1654 in182.000 mm

r

0.0787 in2.000 mm

da min

5.4724 in139.000 mm

db min

5.6299 in143.000 mm

Db min

7.2047 in183.000 mm

Db max

7.5197 in191.000 mm

ras max

0.0787 in2.000 mm