Roller Bearing Company Inc. - Thin Section Ball Bearings - Angular Contact, A-Type

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

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Unit of Measure

Items	KA020AR0-RBC Thin Section Ball Bearings - Angular Contact, A-Type	KA025AR0-RBC Thin Section Ball Bearings - Angular Contact, A-Type	KA030AR0-RBC Thin Section Ball Bearings - Angular Contact, A-Type	KA035AR0-RBC Thin Section Ball Bearings - Angular Contact, A-Type	KA040AR0-RBC Thin Section Ball Bearings - Angular Contact, A-Type
Industry Standards/Certifications	N/A AISI 52100, MIL-PRF-3150	N/A AISI 52100, MIL-PRF-3151	N/A AISI 52100, MIL-PRF-3152	N/A AISI 52100, MIL-PRF-3153	N/A AISI 52100, MIL-PRF-3154
Type	N/A Angular Contact Ball Bearing
Bore (B)	N/A 2.00 in	N/A 2.50 in	N/A 3.00 in	N/A 3.50 in	N/A 4.00 in
Outside Diameter (D)	N/A 2.50 in	N/A 3.00 in	N/A 3.50 in	N/A 4.00 in	N/A 4.50 in
Outside Ring Width (W)	N/A 0.25 in
Housing Fillet	N/A 0.025 in
Series	N/A RBC®
Material	N/A 52100 Bearing Quality Steel
Cage Material	N/A Brass
Finish	N/A Uncoated
Enclosure	N/A Open
Clearance	N/A C0
Precision Rating	N/A ABEC 1
Bore Shape	N/A Round
Outside Ring Shape	N/A Flat
Include Snap Ring	N/A No
Number of Rows	N/A 1
Total Width	N/A 0.2500 in
Speed [Max]	N/A 8890 rpm	N/A 7270 rpm	N/A 6150 rpm	N/A 5330 rpm	N/A 4710 rpm
Operating Temperature [Min]	N/A -65 ºF
Operating Temperature [Max]	N/A 250 ºF
Dynamic Radial	N/A 1730 lbf	N/A 1860 lbf	N/A 1980 lbf	N/A 2070 lbf	N/A 2180 lbf
Static Radial	N/A 2280 lbf	N/A 2780 lbf	N/A 3290 lbf	N/A 3790 lbf	N/A 4300 lbf
Weight	N/A 0.1 lb	N/A 0.13 lb	N/A 0.15 lb	N/A 0.18 lb	N/A 0.19 lb