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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

950 RPM

Limiting Speed - Grease

650 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

845000 lbf3750000 N3750.00 kN

Dynamic Load Rating

315000 lbf1400000 N1400.00 kN

Weight

162.260 lb73.600 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

14.9606 in380.000 mm

D

20.4724 in520.000 mm

F

16.9291 in430.000 mm

B

5.5118 in140.000 mm

r

0.1575 in4.000 mm

s

0.0787 in2.000 mm

da min

15.5906 in396.000 mm

Da max

19.8425 in504.000 mm

ras max

0.1181 in3 mm