Unit of Measure

Technical Specifications

Type

Needle Roller Bearing

Bore Type

Round

Material

High Carbon Chrome Steel

Cage Material

Steel

Limiting Speed - Oil

1200 rpm

Limiting Speed - Grease

800 rpm

Precision

ISO Class 0

Configuration

One

Enclosure

Open

Bearing Design

w/ Inner Ring

Oil Hole

w/ Oil Hole

Radial Internal Clearance

CN

Static Load Rating

400000 lbf1770000 N1770.00 kN

Dynamic Load Rating

141000 lbf625000 N625.00 kN

Weight

48.502 lb22 kg

Operating Temperature Range

-40 to 250 ºF-40 to 120 ºC

Dimensional Specifications


Machined-Ring Needle Roller Bearing w/ Inner Ring - NA48, NA49 Series - Dimensions

d

11.8110 in300.000 mm

D

14.9606 in380 mm

F

12.9921 in330.000 mm

B

3.1496 in80 mm

r

0.0827 in2.1 mm

s

0.0787 in2.000 mm

da min

12.2441 in311.000 mm

Da max

14.5276 in369.000 mm

ras max

0.0787 in2.000 mm