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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 Tapered

Material

N/A Hardened Alloy Steel

Cage Material

N/A High Strength, 2 piece, Machined Brass

Limiting Speed - Oil

N/A 15000 RPM

Limiting Speed - Grease

N/A 12000 RPM

Taper

N/A 1:12

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 8300 lbf37000 N37.00 kN

Dynamic Load Rating

N/A 6950 lbf31000 N31.00 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/ Tapered Bore - Type NN - Dimensions

d

N/A 1.1811 in30.000 mm

D

N/A 2.1654 in55.000 mm

B

N/A 0.7480 in19.000 mm

C

N/A 0.7480 in19.000 mm

Ew

N/A 1.9094 in48.500 mm

r

N/A 0.0394 in1.000 mm

da min

N/A 1.378 in35 mm

db min

N/A 1.4370 in36.500 mm

Da max

N/A 1.9291 in49.000 mm

Db min

N/A 1.9291 in49.000 mm

Db max

N/A 1.9685 in50.000 mm

ras max

N/A 0.0394 in1 mm