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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 3100 RPM

Precision

 N/A ISO Class 5

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 C0NA

Static Load Rating

 N/A 107000 lbf475000 N475.00 kN

Dynamic Load Rating

 N/A 64000 lbf284000 N284.00 kN

Enclosure

 N/A Open

Weight

 N/A 12.059 lb5.470 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 5.1181 in130.000 mm

D

 N/A 7.8740 in200.000 mm

B

 N/A 2.0472 in52.000 mm

C

 N/A 2.0472 in52.000 mm

Fw

 N/A 5.9055 in150.000 mm

r

 N/A 0.0787 in2.000 mm

da min

 N/A 5.4724 in139.000 mm

db min

 N/A 5.6299 in143.000 mm

Db min

 N/A 7.2047 in183.000 mm

Db max

 N/A 7.5197 in191.000 mm

ras max

 N/A 0.0787 in2.000 mm