Item # NNU4964, Double Row Cylindrical Roller Bearing w/ Cylindrical Bore - Type NNU 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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The rollers in the NN type bearing are guided by the ribs of the inner ring.

Unit of Measure

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Technical Specifications

Type	N/A Cylindrical Roller Bearing
Bore Type	N/A Cylindrical
Material	N/A Hardened Alloy Steel
Cage Material	N/A High Strength, 2 piece, Machined Brass
Limiting Speed - Oil	N/A 1400 RPM
Limiting Speed - Grease	N/A 1200 RPM
Precision	N/A ISO Class 0
Configuration	N/A Two
Tolerance	N/A ISO Class 0 (RBEC 1)
Oil Hole	N/A w/o Oil Hole
Radial Internal Clearance	N/A CN
Static Load Rating	N/A 670000 lbf2970000 N2970.00 kN
Dynamic Load Rating	N/A 279000 lbf1240000 N1240.00 kN
Enclosure	N/A Open
Weight	N/A 113.317 lb51.400 kg
Operating Temperature Range	N/A -40 to 250 ºF-40 to 120 ºC

Dimensional Specifications

Double Row Cylindrical Roller Bearing w/ Cylindrical Bore - Type NNU - Dimensions
d	N/A 12.5984 in320.000 mm
D	N/A 17.3228 in440.000 mm
B	N/A 4.6457 in118.000 mm
C	N/A 4.6457 in118.000 mm
Fw	N/A 14.1339 in359.000 mm
r	N/A 0.1181 in3.000 mm
da min	N/A 13.1102 in333.000 mm
db min	N/A 13.5039 in343.000 mm
Da max	N/A 16.8110 in427.000 mm
Db min	N/A 16.2992 in414.000 mm
Db max	N/A 16.8110 in427.000 mm
ras max	N/A 0.0984 in2.500 mm