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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

850 RPM

Limiting Speed - Grease

550 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

955000 lbf4250000 N4250.00 kN

Dynamic Load Rating

335000 lbf1500000 N1500.00 kN

Weight

197.975 lb89.800 kg

Operating Temperature Range

-40 to 250 ºF-40 to 120 ºC

Dimensional Specifications

Open Image
Machined-Ring Needle Roller Bearing w/ Inner Ring - NA48, NA49 Series - Dimensions

d

4.7244 in120.000 mm

D

22.0472 in560.000 mm

F

18.5039 in470.000 mm

B

5.5118 in140.000 mm

r

0.1575 in4.000 mm

s

0.0984 in2.500 mm

da min

17.1654 in436.000 mm

Da max

21.4173 in544.000 mm

ras max

0.1181 in3 mm