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    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

4800 rpm

Limiting Speed - Grease

4000 rpm

Taper

1:12

Precision

ISO Class 4

Configuration

Two

Oil Hole

w/o Oil Hole

Radial Internal Clearance

C9NA

Static Load Rating

57500 lbf256000 N256.00 kN

Dynamic Load Rating

34500 lbf153000 N153.00 kN

Enclosure

Open

Weight

4.813 lb2.183 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

3.937 in100 mm

D

5.9055 in150 mm

B

1.4567 in37 mm

C

1.4567 in37 mm

Ew

5.3937 in137.000 mm

r

0.0591 in1.500 mm

da min

4.2520 in108.000 mm

db min

4.3701 in111.000 mm

Da max

5.4724 in139.000 mm

Db min

5.4724 in139.000 mm

Db max

5.5906 in142.000 mm

ras max

0.0591 in1.5 mm