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

Limiting Speed - Oil

3100 rpm

Limiting Speed - Grease

2600 rpm

Taper

1:12

Precision

ISO Class 4

Configuration

Two

Oil Hole

w/o Oil Hole

Radial Internal Clearance

C1NA

Static Load Rating

132000 lbf585000 N585.00 kN

Dynamic Load Rating

75500 lbf335000 N335.00 kN

Enclosure

Open

Weight

16.319 lb7.402 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

5.9055 in150 mm

D

8.8583 in225.000 mm

B

2.2047 in56 mm

C

2.2047 in56 mm

Ew

8.1102 in206.000 mm

r

0.0827 in2.100 mm

da min

6.3386 in161.000 mm

db min

6.5354 in166.000 mm

Da max

8.1890 in208.000 mm

Db min

8.1890 in208.000 mm

Db max

8.4252 in214.000 mm

ras max

0.0787 in2 mm