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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 890 RPM

Limiting Speed - Grease

 N/A 750 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 1200000 lbf5350000 N5350.00 kN

Dynamic Load Rating

 N/A 575000 lbf2550000 N2550.00 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 18.1102 in460.000 mm

D

 N/A 26.7717 in680.000 mm

B

 N/A 6.4173 in163.000 mm

C

 N/A 6.4173 in163.000 mm

Ew

 N/A 24.4882 in622.000 mm

r

 N/A 0.2362 in6.000 mm

da min

 N/A 19.0551 in484.000 mm

db min

 N/A 19.6063 in498.000 mm

Db min

 N/A 24.6850 in627.000 mm

Db max

 N/A 25.8268 in656.000 mm

ras max

 N/A 0.1969 in5.000 mm