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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

2800 rpm

Limiting Speed - Grease

1900 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

68500 lbf305000 N305.00 kN

Dynamic Load Rating

26500 lbf118000 N118.00 kN

Weight

3.527 lb1.600 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

5.1181 in130.000 mm

D

6.4961 in165.000 mm

F

5.7087 in145.000 mm

B

1.3780 in35.000 mm

r

0.0433 in1.1 mm

s

0.0394 in1.000 mm

da min

5.3740 in136.500 mm

Da max

6.2402 in158.500 mm

ras max

0.0394 in1.000 mm