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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    The rollers in the NN type bearing are guided by the ribs of the inner ring.
Unit of Measure

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Ordering Options

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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 2200.0 RPM

Limiting Speed - Grease

 N/A 1900 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 C3

Static Load Rating

 N/A 292253 lbf1300000 N1300.00 kN

Dynamic Load Rating

 N/A 131514 lbf585000 N585.00 kN

Enclosure

 N/A Open

Weight

 N/A 37.264 lb16.900 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 8.6610 in220.000 mm

D

 N/A 11.8110 in300.000 mm

B

 N/A 3.1496 in80.000 mm

C

 N/A 3.1496 in80.000 mm

Fw

 N/A 9.6457 in245.000 mm

r

 N/A 0.0827 in2.100 mm

da min

 N/A 9.0945 in231.000 mm

db min

 N/A 9.3701 in238.000 mm

Da max

 N/A 11.3780 in289.000 mm

Db min

 N/A 11.1811 in284.000 mm

Db max

 N/A 11.3780 in289.000 mm

ras max

 N/A 0.0787 in2.000 mm