Page 12 of Thin Section Ball Bearings by RBC Bearings
angular contact a-type thin section ball bearings series kaa cross section size 3/16 part number kaa10ag0rbc kaa15ag0rbc ka020ar0rbc kb020ar0rbc ka025ar0rbc kb025ar0rbc ka030ar0rbc kb030ar0rbc ka035ar0rbc kb035ar0rbc ka040ar0rbc kb040ar0rbc kc040ar0rbc kd040ar0rbc kf040ar0rbc kg040ar0rbc ka042ar0rbc kb042ar0rbc kc042ar0rbc kd042ar0rbc kf042ar0rbc kg042ar0rbc ka045ar0rbc kb045ar0rbc kc045ar0rbc kd045ar0rbc kf045ar0rbc kg045ar0rbc ka047ar0rbc kb047ar0rbc kc047ar0rbc kd047ar0rbc kf047ar0rbc kg047ar0rbc ka050ar0rbc kb050ar0rbc kc050ar0rbc kd050ar0rbc kf050ar0rbc kg050ar0rbc ka055ar0rbc kb055ar0rbc kc055ar0rbc kd055ar0rbc kf055ar0rbc kg055ar0rbc b bore 1.0000 1.5000 2.0000 2.0000 2.5000 2.5000 3.0000 3.0000 3.5000 3.5000 4.0000 4.0000 4.0000 4.0000 4.0000 4.0000 4.2500 4.2500 4.2500 4.2500 4.2500 4.2500 4.5000 4.5000 4.5000 4.5000 4.5000 4.5000 4.7500 4.7500 4.7500 4.7500 4.7500 4.7500 5.0000 5.0000 5.0000 5.0000 5.0000 5.0000 5.5000 5.5000 5.5000 5.5000 5.5000 5.5000 ka 1/4 kb 5/16 w width 0.1875 0.1875 0.2500 0.3125 0.2500 0.3125 0.2500 0.3125 0.2500 0.3125 0.2500 0.3125 0.3750 0.5000 0.7500 1.0000 0.2500 0.3125 0.3750 0.5000 0.7500 1.0000 0.2500 0.3125 0.3750 0.5000 0.7500 1.0000 0.2500 0.3125 0.3750 0.5000 0.7500 1.0000 0.2500 0.3125 0.3750 0.5000 0.7500 1.0000 0.2500 0.3125 0.3750 0.5000 0.7500 1.0000 kc 3/8 kd 1/2 land diameter kf 3/4 kg 1 nominal dimensions in inches d outside diameter li -inner ring lo -outer ring ls -counter bore housing fillet diameter 1.141 1.641 2.188 2.234 2.688 2.734 3.188 3.234 3.688 3.734 4.188 4.234 4.281 4.375 4.563 4.750 4.438 4.484 4.531 4.625 4.813 5.000 4.688 4.734 4.781 4.875 5.063 5.250 4.938 4.984 5.031 5.125 5.313 5.500 5.188 5.234 5.281 5.375 5.563 5.750 5.688 5.734 5.781 5.875 6.063 6.250 1.234 1.734 2.313 2.391 2.813 2.891 3.313 3.391 3.813 3.891 4.313 4.391 4.469 4.625 4.938 5.250 4.563 4.641 4.719 4.875 5.188 5.500 4.813 4.891 4.969 5.125 5.438 5.750 5.063 5.141 5.219 5.375 5.688 6.000 5.313 5.391 5.469 5.625 5.938 6.250 5.813 5.891 5.969 6.125 6.438 6.750 1.235 1.735 2.375 2.469 2.875 2.969 3.375 3.469 3.875 3.969 4.375 4.469 4.563 4.750 5.125 5.500 4.625 4.719 4.813 5.000 5.375 5.750 4.875 4.969 5.063 5.250 5.625 6.000 5.125 5.219 5.313 5.500 5.875 6.250 5.375 5.469 5.563 5.750 6.125 6.500 5.875 5.969 6.063 6.250 6.625 7.000 0.015 0.015 0.025 0.040 0.025 0.040 0.025 0.040 0.025 0.040 0.025 0.040 0.040 0.060 0.080 0.080 0.025 0.040 0.040 0.060 0.080 0.080 0.025 0.040 0.040 0.060 0.080 0.080 0.025 0.040 0.040 0.060 0.080 0.080 0.025 0.040 0.040 0.060 0.080 0.080 0.025 0.040 0.040 0.060 0.080 0.080 f1 1.3750 1.8750 2.5000 2.6250 3.0000 3.1250 3.5000 3.6250 4.0000 4.1250 4.5000 4.6250 4.7500 5.0000 5.5000 6.0000 4.7500 4.8750 5.0000 5.2500 5.7500 6.2500 5.0000 5.1250 5.2500 5.5000 6.0000 6.5000 5.2500 5.3750 5.5000 5.7500 6.2500 6.7500 5.5000 5.6250 5.7500 6.0000 6.5000 7.0000 6.0000 6.1250 6.2500 6.5000 7.0000 7.5000 ball diameter 3/32 3/32 1/8 5/32 1/8 5/32 1/8 5/32 1/8 5/32 1/8 5/32 3/16 1/4 3/8 1/2 1/8 5/32 3/16 1/4 3/8 1/2 1/8 5/32 3/16 1/4 3/8 1/2 1/8 5/32 3/16 1/4 3/8 1/2 1/8 5/32 3/16 1/4 3/8 1/2 1/8 5/32 3/16 1/4 3/8 1/2 12 the alphanumeric identification system is used under license rbc bearings are made in the u.s.a.
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