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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

3800 RPM

Limiting Speed - Grease

2500 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

53500 lbf238000 N238.00 kN

Dynamic Load Rating

25000 lbf111000 N111.00 kN

Weight

2.535 lb1.150 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

3.7402 in95.000 mm

D

4.9213 in125.000 mm

F

4.1339 in105.000 mm

B

1.4173 in36.000 mm

r

0.0394 in1.000 mm

s

0.0591 in1.500 mm

da min

3.9370 in100.000 mm

Da max

4.7244 in120.000 mm

ras max

0.0394 in1.000 mm