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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 3600 RPM

Limiting Speed - Grease

 N/A 3000 RPM

Precision

 N/A ISO Class 0

Configuration

 N/A Two

Tolerance

 N/A ISO Class 0 (RBEC 1)

Oil Hole

 N/A w/o Oil Hole

Radial Internal Clearance

 N/A CN

Static Load Rating

 N/A 106000 lbf470000 N470.00 kN

Dynamic Load Rating

 N/A 51000 lbf227000 N227.00 kN

Enclosure

 N/A Open

Weight

 N/A 8.907 lb4.040 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 NNU - Dimensions

d

 N/A 5.5118 in140.000 mm

D

 N/A 7.4803 in190.000 mm

B

 N/A 1.9685 in50.000 mm

C

 N/A 1.9685 in50.000 mm

Fw

 N/A 6.1417 in156.000 mm

r

 N/A 0.0591 in1.500 mm

da min

 N/A 5.8268 in148.000 mm

db min

 N/A 5.9843 in152.000 mm

Da max

 N/A 7.1654 in182.000 mm

Db min

 N/A 7.0866 in180.000 mm

Db max

 N/A 7.1654 in182.000 mm

ras max

 N/A 0.0591 in1.500 mm