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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Inner Ring
Inner Ring - Dimensions
Unit of Measure
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Item #

d

F

B

r

1R40X45X17 N/A 1.5748 in40.000 mm N/A 1.7717 in45.000 mm N/A 0.6693 in17.000 mm N/A 0.0118 in0.300 mm
1R40X45X20 N/A 1.5748 in40.000 mm N/A 1.7717 in45.000 mm N/A 0.7874 in20.000 mm N/A 0.0118 in0.300 mm
1R40X45X20.5 N/A 1.5748 in40.000 mm N/A 1.7717 in45.000 mm N/A 0.8071 in20.500 mm N/A 0.0118 in0.300 mm
1R40X45X26.5 N/A 1.5748 in40.000 mm N/A 1.7717 in45.000 mm N/A 1.0433 in26.500 mm N/A 0.0118 in0.300 mm
1R40X45X30 N/A 1.5748 in40.000 mm N/A 1.7717 in45.000 mm N/A 1.1811 in30.000 mm N/A 0.0118 in0.300 mm
1R40X45X34 N/A 1.5748 in40.000 mm N/A 1.7717 in45.000 mm N/A 1.3386 in34.000 mm N/A 0.0118 in0.300 mm
1R40X45X40 N/A 1.5748 in40.000 mm N/A 1.7717 in45.000 mm N/A 1.5748 in40.000 mm N/A 0.0118 in0.300 mm
1R40X48X22 N/A 1.5748 in40.000 mm N/A 1.8898 in48.000 mm N/A 0.8661 in22.000 mm N/A 0.0236 in0.600 mm
1R40X48X23 N/A 1.5748 in40.000 mm N/A 1.8898 in48.000 mm N/A 0.9055 in23.000 mm N/A 0.0236 in0.600 mm
1R40X48X30 N/A 1.5748 in40.000 mm N/A 1.8898 in48.000 mm N/A 1.1811 in30.000 mm N/A 0.0236 in0.600 mm
1R40X48X40 N/A 1.5748 in40.000 mm N/A 1.8898 in48.000 mm N/A 1.5748 in40.000 mm N/A 0.0236 in0.600 mm
1R40X50X20 N/A 1.5748 in40.000 mm N/A 1.9685 in50.000 mm N/A 0.7874 in20.000 mm N/A 0.0118 in0.300 mm
1R40X50X22 N/A 1.5748 in40.000 mm N/A 1.9685 in50.000 mm N/A 0.8661 in22.000 mm N/A 0.0394 in1.000 mm
1R420X470X140 N/A 16.5354 in420.000 mm N/A 18.5039 in470.000 mm N/A 5.5118 in140.000 mm N/A 0.1575 in4.000 mm
1R42X47X20 N/A 1.6535 in42.000 mm N/A 1.8504 in47.000 mm N/A 0.7874 in20.000 mm N/A 0.0118 in0.300 mm
1R42X47X30 N/A 1.6535 in42.000 mm N/A 1.8504 in47.000 mm N/A 1.1811 in30.000 mm N/A 0.0118 in0.300 mm
1R440X490X160 N/A 17.3228 in440.000 mm N/A 19.2913 in490.000 mm N/A 6.2992 in160.000 mm N/A 0.1575 in4.000 mm
1R45X50X20 N/A 1.7717 in45.000 mm N/A 1.9685 in50.000 mm N/A 0.7874 in20.000 mm N/A 0.0118 in0.300 mm
1R45X50X25 N/A 1.7717 in45.000 mm N/A 1.9685 in50.000 mm N/A 0.9843 in25.000 mm N/A 0.0236 in0.600 mm
1R45X50X25.5 N/A 1.7717 in45.000 mm N/A 1.9685 in50.000 mm N/A 1.0039 in25.500 mm N/A 0.0118 in0.300 mm
1R45X50X32 N/A 1.7717 in45.000 mm N/A 1.9685 in50.000 mm N/A 1.2598 in32.000 mm N/A 0.0236 in0.600 mm
1R45X50X35 N/A 1.7717 in45.000 mm N/A 1.9685 in50.000 mm N/A 1.3780 in35.000 mm N/A 0.0236 in0.600 mm
1R45X50X40 N/A 1.7717 in45.000 mm N/A 1.9685 in50.000 mm N/A 1.5748 in40.000 mm N/A 0.0118 in0.300 mm
1R45X52X22 N/A 1.7717 in45.000 mm N/A 2.0472 in52.000 mm N/A 0.8661 in22.000 mm N/A 0.0236 in0.600 mm
1R45X52X23D N/A 1.7717 in45.000 mm N/A 2.0472 in52.000 mm N/A 0.9055 in23.000 mm N/A 0.0236 in0.600 mm
Unit of Measure
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