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    The rollers in the NN type bearing are guided by the ribs of the inner ring.
Unit of Measure

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Ordering Options

 N/A Contact NTN Customer Relations

Technical Specifications

Type

 N/A Cylindrical Roller Bearing

Bore Type

 N/A Cylindrical

Material

 N/A Hardened Alloy Steel

Cage Material

 N/A High Strength, 2 piece, Machined Brass

Limiting Speed - Oil

 N/A 6300 RPM

Limiting Speed - Grease

 N/A 5400 RPM

Precision

 N/A ISO Class 0

Configuration

 N/A Two

Oil Hole

 N/A w/o Oil Hole

Radial Internal Clearance

 N/A CN

Static Load Rating

 N/A 33500 lbf149000 N149.00 kN

Dynamic Load Rating

 N/A 21700 lbf96500 N96.50 kN

Enclosure

 N/A Open

Operating Temperature Range

 N/A -40 to 250 ºF-40 to 120 ºC

Dimensional Specifications


Double Row Cylindrical Roller Bearing w/ Cylindrical Bore - Type NN - Dimensions

d

 N/A 2.9528 in75.000 mm

D

 N/A 4.5276 in115.000 mm

B

 N/A 1.1811 in30.000 mm

C

 N/A 1.1811 in30.000 mm

Ew

 N/A 4.1339 in105.000 mm

r

 N/A 0.0433 in1.100 mm

da min

 N/A 3.2087 in81.500 mm

db min

 N/A 3.3071 in84.000 mm

Db min

 N/A 4.1732 in106.000 mm

Db max

 N/A 4.2717 in108.500 mm

ras max

 N/A 0.0394 in1.000 mm