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Unit of Measure

Technical Specifications

Type

Needle Roller Bearing

Bore Type

Round

Material

High Carbon Chrome Steel

Cage Material

Steel

Limiting Speed - Oil

900 RPM

Limiting Speed - Grease

600 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

900000 lbf4000000 N4000.00 kN

Dynamic Load Rating

325000 lbf1450000 N1450.00 kN

Weight

168.874 lb76.600 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

15.7480 in400.000 mm

D

21.2598 in540.000 mm

F

17.7165 in450.000 mm

B

5.5118 in140.000 mm

r

0.1575 in4.000 mm

s

0.0984 in2.500 mm

da min

16.3780 in416.000 mm

Da max

20.6299 in524.000 mm

ras max

0.1181 in3 mm