National Precision Bearing
B500 SERIES BALL BEARINGS | SINGLE ROW TORQUE TUBE TYPE
NPB
Part No.
RFQ per item		 Bore
d
+.0007
-.0007		 O.D.
D
+.0000
-.0010		 Width Min. Chamfer Balls Thrust
Load
Lbs.		 Static
Radial
Load
Lbs.
Open Sealed Bi
+.000
-.005		 Bo
+.000
-.005		 r1
+.015
-.000		 r2
+.015
-.000		 No. Size
B538 B538DD .6250 1.0625 .281 .250 .015 .015 21 1/8 1500 3280
B539 B539DD .7500 1.1875 .281 .250 .015 .015 24 1/8 1700 3750
B540 B540DD .8750 1.3125 .281 .250 .015 .015 27 1/8 1900 4220
B541 B541DD 1.0625 1.5000 .281 .250 .015 .015 32 1/8 2200 5000
B542 B542DD 1.3125 1.7500 .281 .250 .015 .015 38 1/8 2700 5950
B543 B543DD 1.5625 2.0000 .281 .250 .015 .015 44 1/8 3200 6880
DD = Equipped with Teflon® coated fabric seals.

NATIONAL PRECISION BEARING GROUP
of Mechatronics, Inc.

Phone: 800-426-8038 • 425-222-5900 • Fax: 425-222-5950
E-mail: sales@nationalprecision.com

Purchase Order Terms and Conditions

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