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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 Tapered

Material

 N/A Hardened Alloy Steel

Cage Material

 N/A High Strength, 2 piece, Machined Brass

Limiting Speed - Oil

 N/A 1300 RPM

Limiting Speed - Grease

 N/A 1100 RPM

Taper

 N/A 1:12

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 600000 lbf2670000 N2670.00 kN

Dynamic Load Rating

 N/A 305000 lbf1350000 N1350.00 kN

Enclosure

 N/A Open

Weight

 N/A 162.701 lb73.800 kg

Operating Temperature Range

 N/A -40 to 250 ºF-40 to 120 ºC

Dimensional Specifications


Double Row Cylindrical Roller Bearing w/ Tapered Bore - Type NN - Dimensions

d

 N/A 12.5984 in320.000 mm

D

 N/A 18.8976 in480.000 mm

B

 N/A 4.7638 in121.000 mm

C

 N/A 4.7638 in121.000 mm

Ew

 N/A 17.2441 in438.000 mm

r

 N/A 0.1575 in4.000 mm

da min

 N/A 13.2283 in336.000 mm

db min

 N/A 13.6220 in346.000 mm

Da max

 N/A 17.3622 in441.000 mm

Db min

 N/A 17.3622 in441.000 mm

Db max

 N/A 18.2677 in464.000 mm

ras max

 N/A 0.1181 in3 mm