NTN BEARING CORPORATION OF AMERICA
NTN BEARING CORPORATION OF AMERICA
Head Office
1600 E. Bishop Court, P.O. Box 7604
Mount Prospect, IL 60056-7604, U.S.A.
Phone: 847-298-7500
Fax: 847-699-9744
Toll Free: 800-323-2358
Email: mkt@ntnamerica.com
Website: www.ntnamericas.com
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Unit of Measure

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Ordering Options

 N/A Contact NTN Customer Relations

Technical Specifications

Type

 N/A Needle Roller Bearing

Bore Type

 N/A Round

Material

 N/A High Carbon Chrome Steel

Cage Material

 N/A Steel

Limiting Speed - Oil

 N/A 850 RPM

Limiting Speed - Grease

 N/A 550 RPM

Precision

 N/A ISO Class 0

Configuration

 N/A One

Enclosure

 N/A Open

Bearing Design

 N/A w/ Inner Ring

Oil Hole

 N/A w/ Oil Hole

Radial Internal Clearance

 N/A CN

Static Load Rating

 N/A 955000 lbf4250000 N4250.00 kN

Dynamic Load Rating

 N/A 335000 lbf1500000 N1500.00 kN

Weight

 N/A 197.975 lb89.800 kg

Operating Temperature Range

 N/A -40 to 250 ºF-40 to 120 ºC

Dimensional Specifications


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

d

 N/A 4.7244 in120.000 mm

D

 N/A 22.0472 in560.000 mm

F

 N/A 18.5039 in470.000 mm

B

 N/A 5.5118 in140.000 mm

r

 N/A 0.1575 in4.000 mm

s

 N/A 0.0984 in2.500 mm

da min

 N/A 17.1654 in436.000 mm

Da max

 N/A 21.4173 in544.000 mm

ras max

 N/A 0.1181 in3 mm