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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

6500 RPM

Limiting Speed - Grease

4300 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

31500 lbf140000 N140.00 kN

Dynamic Load Rating

17200 lbf76500 N76.50 kN

Weight

1.232 lb0.559 kg

Operating Temperature Range

-40 to 250 ºF-40 to 120 ºC

Dimensional Specifications


Machined-Ring Needle Roller Bearing w/ Inner Ring - NA49.R, NA59, NA69R, NK.R+1R Series - Dimensions

d

2.1654 in55.000 mm

D

3.1496 in80.000 mm

F

2.4803 in63.000 mm

B

1.3386 in34.000 mm

r

0.0394 in1.000 mm

s

0.0591 in1.500 mm

da min

2.3622 in60.000 mm

Da max

2.9528 in75.000 mm

ras max

0.0394 in1.000 mm