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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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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 1100 RPM

Limiting Speed - Grease

 N/A 940 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 775000 lbf3450000 N3450.00 kN

Dynamic Load Rating

 N/A 380000 lbf1690000 N1690.00 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 14.9606 in380.000 mm

D

 N/A 22.0472 in560.000 mm

B

 N/A 5.3150 in135.000 mm

C

 N/A 5.3150 in135.000 mm

Ew

 N/A 20.1575 in512.000 mm

r

 N/A 0.1969 in5.000 mm

da min

 N/A 15.7480 in400.000 mm

db min

 N/A 16.1811 in411.000 mm

Db min

 N/A 20.3150 in516.000 mm

Db max

 N/A 21.2598 in540.000 mm

ras max

 N/A 0.1575 in4.000 mm