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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

9000 RPM

Limiting Speed - Grease

6000 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

11800 lbf52500 N52.50 kN

Dynamic Load Rating

6300 lbf28000 N28.00 kN

Weight

0.301 lb0.137 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

1.5748 in40.000 mm

D

2.1654 in55.000 mm

F

1.7717 in45.000 mm

B

0.7874 in20.000 mm

r

0.0118 in0.300 mm

s

0.0197 in0.500 mm

da min

1.6535 in42.000 mm

Da max

2.0866 in53.000 mm

ras max

0.0118 in0.300 mm