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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 3100 RPM

Limiting Speed - Grease

 N/A 2600 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 166000 lbf740000 N740.00 kN

Dynamic Load Rating

 N/A 80000 lbf355000 N355.00 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 6.2992 in160.000 mm

D

 N/A 8.6614 in220.000 mm

B

 N/A 2.3622 in60.000 mm

C

 N/A 2.3622 in60.000 mm

Ew

 N/A 8.1299 in206.500 mm

r

 N/A 0.0787 in2.000 mm

da min

 N/A 6.6535 in169 mm

db min

 N/A 6.8504 in174.000 mm

Db min

 N/A 8.2087 in208.500 mm

Db max

 N/A 8.3071 in211.000 mm

ras max

 N/A 0.0787 in2.000 mm