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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 940 RPM

Limiting Speed - Grease

N/A 800 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 1150000 lbf5100000 N5100.00 kN

Dynamic Load Rating

N/A 545000 lbf2420000 N2420.00 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/ Cylindrical Bore - Type NN - Dimensions

d

N/A 17.3228 in440.000 mm

D

N/A 25.5906 in650.000 mm

B

N/A 6.1811 in157.000 mm

C

N/A 6.1811 in157.000 mm

Ew

N/A 23.4646 in596.000 mm

r

N/A 0.2362 in6.000 mm

da min

N/A 18.2677 in464.000 mm

db min

N/A 18.7795 in477.000 mm

Db min

N/A 23.6614 in601.000 mm

Db max

N/A 24.6457 in626.000 mm

ras max

N/A 0.1969 in5.000 mm