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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 4300 RPM

Limiting Speed - Grease

 N/A 3600 RPM

Precision

 N/A ISO Class 5

Configuration

 N/A Two

Oil Hole

 N/A w/o Oil Hole

Radial Internal Clearance

 N/A C1NA

Static Load Rating

 N/A 84500 lbf375000 N375.00 kN

Dynamic Load Rating

 N/A 51500 lbf229000 N229.00 kN

Enclosure

 N/A Open

Weight

 N/A 8.027 lb3.641 kg

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 4.3307 in110.000 mm

D

 N/A 6.6929 in170.000 mm

B

 N/A 1.7717 in45.000 mm

C

 N/A 1.7717 in45.000 mm

Ew

 N/A 6.1024 in155.000 mm

r

 N/A 0.0787 in2.000 mm

da min

 N/A 4.685 in119 mm

db min

 N/A 4.8425 in123.000 mm

Db min

 N/A 6.1811 in157.000 mm

Db max

 N/A 6.3386 in161.000 mm

ras max

 N/A 0.0787 in2 mm