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

Round

Material

Hardened Alloy Steel

Cage Type

None

Cage Material

None

Limiting Speed - Grease

310 rpm

Precision

ISO Class 0

Configuration

Two

Oil Hole

w/o Oil Hole

Radial Internal Clearance

CN

Static Load Rating

1370000 lbf6100000 N6100.00 kN

Dynamic Load Rating

610000 lbf2720000 N2720.00 kN

Enclosure

Double Shielded

Weight

317.465 lb144.000 kg

Operating Temperature Range

-40 to 250 ºF-40 to 120 ºC

Dimensional Specifications


Double Row Cylindrical Roller Bearing for Sheaves w/ Snap Rings - Dimensions

d

12.5984 in320.000 mm

D

18.8976 in480.000 mm

B

8.5827 in218 mm

C

8.5039 in216.000 mm

D2

19.6850 in500.000 mm

f

0.3150 in8.000 mm

p

6.6142 in168.000 mm

J

14.8031 in376.000 mm

Cf

6.9291 in176.000 mm

Cf1

6.9291 in176.000 mm

S

0.7874 in20.000 mm

E1

20.8661 in530.000 mm

t

0.1181 in3.000 mm

Angle of Chamfer

30 º

r

0.0984 in2.500 mm

da min

12.9921 in330.000 mm