RBC Bearings Inc.
RBC Bearings Inc.
Address: One Tribology Center
Oxford, CT 06478
Phone: (203) 267-7001
Fax: (203) 267-5000
Email: AeroInfo@RBCbearings.com
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B500 Series
• Extra light duty
• Single row, ball
• This series is made of bearing quality chromium-alloy, high carbon steel, and is not cadmium plated
• Open type — no seals or shields (unsealed version of B500DD)
• Packaged/shipped with preservative oil
• Also offered with CRES 440C material per OEM specifications
RBC-Airframe-Bearing-ATF-Series-/-SAE-AS21438
Unit of Measure
1 2 

Item #

Bore (B)

Outside Diameter (D)

Inside Ring Width (W)

Outside Ring Width (H)

Radial Limit Load Rating

B538DDFS428 N/A 0.63 in N/A 1.06 in N/A 0.281 in N/A 0.25 in N/A 3280 lbf
B538DDFS464 N/A 0.63 in N/A 1.06 in N/A 0.281 in N/A 0.25 in N/A 3280 lbf
B539DDFS428 N/A 0.75 in N/A 1.19 in N/A 0.281 in N/A 0.25 in N/A 3750 lbf
B539DDFS464 N/A 0.75 in N/A 1.19 in N/A 0.281 in N/A 0.25 in N/A 3750 lbf
B539FS160 N/A 0.75 in N/A 1.19 in N/A 0.281 in N/A 0.25 in N/A 3750 lbf
B540DDFS428 N/A 0.88 in N/A 1.31 in N/A 0.281 in N/A 0.25 in N/A 4220 lbf
B540DDFS464 N/A 0.88 in N/A 1.31 in N/A 0.281 in N/A 0.25 in N/A 4220 lbf
B540FS160 N/A 0.88 in N/A 1.31 in N/A 0.281 in N/A 0.25 in N/A 4220 lbf
B541DDFS428 N/A 1.06 in N/A 1.50 in N/A 0.281 in N/A 0.25 in N/A 5000 lbf
B541DDFS464 N/A 1.06 in N/A 1.50 in N/A 0.281 in N/A 0.25 in N/A 5000 lbf
B541FS160 N/A 1.06 in N/A 1.50 in N/A 0.281 in N/A 0.25 in N/A 5000 lbf
B542DDFS428 N/A 1.31 in N/A 1.75 in N/A 0.281 in N/A 0.25 in N/A 5950 lbf
B542DDFS464 N/A 1.31 in N/A 1.75 in N/A 0.281 in N/A 0.25 in N/A 5950 lbf
B542FS160 N/A 1.31 in N/A 1.75 in N/A 0.281 in N/A 0.25 in N/A 5950 lbf
B543DDFS428 N/A 1.56 in N/A 2.00 in N/A 0.281 in N/A 0.25 in N/A 6880 lbf
B543DDFS464 N/A 1.56 in N/A 2.00 in N/A 0.281 in N/A 0.25 in N/A 6880 lbf
B543FS160 N/A 1.56 in N/A 2.00 in N/A 0.281 in N/A 0.25 in N/A 6880 lbf
B544DDFS428 N/A 1.81 in N/A 2.25 in N/A 0.281 in N/A 0.25 in N/A 7980 lbf
B544DDFS464 N/A 1.81 in N/A 2.25 in N/A 0.281 in N/A 0.25 in N/A 7980 lbf
B544FS160 N/A 1.81 in N/A 2.25 in N/A 0.281 in N/A 0.25 in N/A 7980 lbf
B545DDFS428 N/A 2.06 in N/A 2.63 in N/A 0.281 in N/A 0.25 in N/A 9220 lbf
B545DDFS464 N/A 2.06 in N/A 2.63 in N/A 0.281 in N/A 0.25 in N/A 9220 lbf
B546DDFS428 N/A 2.31 in N/A 2.88 in N/A 0.281 in N/A 0.25 in N/A 10150 lbf
B546DDFS464 N/A 2.31 in N/A 2.88 in N/A 0.281 in N/A 0.25 in N/A 10150 lbf
B546FS160 N/A 2.31 in N/A 2.88 in N/A 0.281 in N/A 0.25 in N/A 10150 lbf
Unit of Measure
1 2