Item # NAO-50X78X20, Machined-Ring Needle Roller Bearings - Separable Type w/ Inner Ring On NTN Bearing Corp. 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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Technical Specifications

Type	N/A Machined-Ring Needle Roller Bearing - Separable Type
Bore Type	N/A Round
Material	N/A High Carbon Chrome Steel
Cage Material	N/A Steel
Limiting Speed - Oil	N/A 6500 RPM
Limiting Speed - Grease	N/A 4400.0 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 16900 lbf75000 N75.00 kN
Dynamic Load Rating	N/A 9000 lbf40000 N40.00 kN
Operating Temperature Range	N/A -40 to 250 ºF-40 to 120 ºC

Dimensional Specifications

Machined-Ring Needle Roller Bearings - Separable Type w/ Inner Ring - Dimensions
d	N/A 1.9685 in50.000 mm
D	N/A 3.0709 in78.000 mm
F	N/A 2.3622 in60.000 mm
E	N/A 2.6772 in68.000 mm
C	N/A 0.7874 in20.000 mm
r	N/A 0.0394 in1.000 mm
da min	N/A 2.1654 in55.000 mm
Da max	N/A 2.8740 in73.000 mm
db min	N/A 2.6457 in67.200 mm
Db max	N/A 2.3937 in60.800 mm
ras max	N/A 0.0394 in1.000 mm