The rollers in the NN type bearing are guided by the ribs of the inner ring.
Unit of Measure

Technical Specifications

Type

Cylindrical Roller Bearing

Bore Type

Tapered

Material

Hardened Alloy Steel

Cage Material

High Strength, 2 piece, Machined Brass

Taper

1:12

Precision

ISO Class 4

Configuration

Two

Oil Hole

w/o Oil Hole

Radial Internal Clearance

C9NA

Static Load Rating

238000 lbf1060000 N1060.00 kN

Dynamic Load Rating

110000 lbf490000 N490.00 kN

Enclosure

Open

Weight

28.440 lb12.900 kg

Operating Temperature Range

-40 to 250 ºF-40 to 120 ºC

Dimensional Specifications


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

d

9.4488 in240.000 mm

D

12.5984 in320.000 mm

B

2.3622 in60 mm

C

2.3622 in60 mm

Ew

11.8504 in301.000 mm

r

0.0827 in2.100 mm

da min

9.8819 in251.000 mm

ras max

0.0787 in2 mm