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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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Ordering Options

 N/A Contact NTN Customer Relations

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 2600 RPM

Limiting Speed - Grease

 N/A 2200 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 232000 lbf1030000 N1030.00 kN

Dynamic Load Rating

 N/A 107000 lbf475000 N475.00 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 NNU - Dimensions

d

 N/A 7.4803 in190.000 mm

D

 N/A 10.2362 in260.000 mm

B

 N/A 2.7165 in69.000 mm

C

 N/A 2.7165 in69.000 mm

Fw

 N/A 8.3465 in212.000 mm

r

 N/A 0.0787 in2.000 mm

da min

 N/A 7.8346 in199.000 mm

db min

 N/A 8.0709 in205.000 mm

Da max

 N/A 9.8819 in251.000 mm

Db min

 N/A 9.6850 in246.000 mm

Db max

 N/A 9.8819 in251.000 mm

ras max

 N/A 0.0787 in2.000 mm