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