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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In applications with high axial loads the A-Type, angular contact ball bearing should be used. This bearing also works well in radial or combined radial-thrust applications. The A-Type bearing should never be used alone to support moment loads or reversing axial loading.

Duplex bearings are a pair of angular contact RBC Thin Section Ball Bearings specially ground for use as a matched set. A duplexed pair can be used to provide accurate shaft location, to increase capacity or to increase stiffness of the bearing assembly. A duplex pair of RBC Thin Section Ball Bearings is ground so that when mounted using recommended fits, there will be no internal clearance in the bearings. There are three basic mounting methods to accommodate different loading requirements:
• Back-to-Back (DB), B-Type
• Face-to-Face (DF), F-Type
• Tandem (DT), T-Type

Features of A-Type Thin Section Bearings:
• Large Diameter
• Light Weight
• Small Cross Section
• Circular Pocket Ball Separator

KB025AR0-1_FB
Unit of Measure
1 2 3 4 5 

Item #

Bore (B)

Outside Diameter (D)

Outside Ring Width (W)

Housing Fillet

Dynamic Radial

Static Radial

KA020AR0-RBC N/A 2.00 in N/A 2.50 in N/A 0.25 in N/A 0.025 in N/A 1730 lbf N/A 2280 lbf
KA025AR0-RBC N/A 2.50 in N/A 3.00 in N/A 0.25 in N/A 0.025 in N/A 1860 lbf N/A 2780 lbf
KA030AR0-RBC N/A 3.00 in N/A 3.50 in N/A 0.25 in N/A 0.025 in N/A 1980 lbf N/A 3290 lbf
KA035AR0-RBC N/A 3.50 in N/A 4.00 in N/A 0.25 in N/A 0.025 in N/A 2070 lbf N/A 3790 lbf
KA040AR0-RBC N/A 4.00 in N/A 4.50 in N/A 0.25 in N/A 0.025 in N/A 2180 lbf N/A 4300 lbf
KA042AR0-RBC N/A 4.25 in N/A 4.75 in N/A 0.25 in N/A 0.025 in N/A 2240 lbf N/A 4550 lbf
KA045AR0-RBC N/A 4.50 in N/A 5.00 in N/A 0.25 in N/A 0.025 in N/A 2260 lbf N/A 4810 lbf
KA047AR0-RBC N/A 4.75 in N/A 5.25 in N/A 0.25 in N/A 0.025 in N/A 2310 lbf N/A 5060 lbf
KA050AR0-RBC N/A 5.00 in N/A 5.50 in N/A 0.25 in N/A 0.025 in N/A 2360 lbf N/A 5310 lbf
KA055AR0-RBC N/A 5.50 in N/A 6.00 in N/A 0.25 in N/A 0.025 in N/A 2410 lbf N/A 5820 lbf
KA060AR0-RBC N/A 6.00 in N/A 6.50 in N/A 0.25 in N/A 0.025 in N/A 2500 lbf N/A 6320 lbf
KA065AR0-RBC N/A 6.50 in N/A 7.00 in N/A 0.25 in N/A 0.025 in N/A 2580 lbf N/A 6830 lbf
KA070AR0-RBC N/A 7.00 in N/A 7.50 in N/A 0.25 in N/A 0.025 in N/A 2600 lbf N/A 7340 lbf
KA075AR0-RBC N/A 7.50 in N/A 8.00 in N/A 0.25 in N/A 0.025 in N/A 2660 lbf N/A 7840 lbf
KA080AR0-RBC N/A 8.00 in N/A 8.50 in N/A 0.25 in N/A 0.025 in N/A 2770 lbf N/A 8350 lbf
KA090AR0-RBC N/A 9.00 in N/A 9.50 in N/A 0.25 in N/A 0.025 in N/A 2860 lbf N/A 9360 lbf
KA100AR0-RBC N/A 10.00 in N/A 10.50 in N/A 0.25 in N/A 0.025 in N/A 3000 lbf N/A 10370 lbf
KA110AR0-RBC N/A 11.00 in N/A 11.50 in N/A 0.25 in N/A 0.025 in N/A 3100 lbf N/A 11380 lbf
KA120AR0-RBC N/A 12.00 in N/A 12.50 in N/A 0.25 in N/A 0.025 in N/A 3200 lbf N/A 12390 lbf
KAA10AG0-RBC N/A 1.00 in N/A 1.38 in N/A 0.1875 in N/A 0.015 in N/A 960 lbf N/A 970 lbf
KAA15AG0-RBC N/A 1.50 in N/A 1.88 in N/A 0.1875 in N/A 0.015 in N/A 1100 lbf N/A 1380 lbf
KAA17AG0-RBC N/A 1.75 in N/A 2.13 in N/A 0.1875 in N/A 0.015 in N/A 1122 lbf N/A 1520 lbf
KB020AR0-RBC N/A 2.00 in N/A 2.63 in N/A 0.3125 in N/A 0.032 in N/A 2460 lbf N/A 3150 lbf
KB025AR0-RBC N/A 2.50 in N/A 3.13 in N/A 0.3125 in N/A 0.032 in N/A 2680 lbf N/A 3860 lbf
KB030AR0-RBC N/A 3.00 in N/A 3.63 in N/A 0.3125 in N/A 0.032 in N/A 2800 lbf N/A 4470 lbf
Unit of Measure
1 2 3 4 5