MRC Bearing Services
SKF USA, Inc.
890 Forty Foot Rd
Lansdale, PA
Phone: 1-267-436-6000 • Fax: 1-267-436-6001
Email: AskEngineeringHotline@skf.com
Website: http://www.skf.com/us/products/mrc/index.html
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300-RD Series Matched Angular Contact Ball Bearing Assemblies
Unit of Measure
1 2 

Item #

Bore d

Outside Diameter D1

Width B

Grease Speed Rating n1

Basic Dynamic Radial Load Rating C

Basic Static Radial Load Rating Co

301-RD N/A 12.000 mm N/A 37.0000 mm N/A 24.00 mm N/A 15000 rpm N/A 17200 N N/A 9800 N
302-RD N/A 15.000 mm N/A 42.0000 mm N/A 26.00 mm N/A 14000 rpm N/A 19900 N N/A 12900 N
303-RD N/A 17.000 mm N/A 47.0000 mm N/A 28.00 mm N/A 13000 rpm N/A 23800 N N/A 16300 N
304-RD N/A 20.000 mm N/A 52.0000 mm N/A 30.00 mm N/A 10000 rpm N/A 32500 N N/A 22400 N
305-RD N/A 25.000 mm N/A 62.0000 mm N/A 34.00 mm N/A 8800 rpm N/A 37700 N N/A 30500 N
306-RD N/A 30.000 mm N/A 72.0000 mm N/A 38.00 mm N/A 7200 rpm N/A 50700 N N/A 40000 N
307-RD N/A 35.000 mm N/A 80.0000 mm N/A 42.00 mm N/A 6800 rpm N/A 63700 N N/A 52000 N
308-RD N/A 40.000 mm N/A 90.0000 mm N/A 46.00 mm N/A 6000 rpm N/A 79300 N N/A 67000 N
309-RD N/A 45.000 mm N/A 100.0000 mm N/A 50.00 mm N/A 5400 rpm N/A 95600 N N/A 81500 N
310-RD N/A 50.000 mm N/A 110.0000 mm N/A 54.00 mm N/A 5000 rpm N/A 133000 N N/A 114000 N
311-RD N/A 55.000 mm N/A 120.0000 mm N/A 58.00 mm N/A 4500 rpm N/A 153000 N N/A 134000 N
312-RD N/A 60.000 mm N/A 130.0000 mm N/A 62.00 mm N/A 4000 rpm N/A 174000 N N/A 156000 N
313-RD N/A 65.000 mm N/A 140.0000 mm N/A 66.00 mm N/A 3800 rpm N/A 195000 N N/A 190000 N
314-RD N/A 70.000 mm N/A 150.0000 mm N/A 70.00 mm N/A 3600 rpm N/A 199000 N N/A 190000 N
315-RD N/A 75.000 mm N/A 160.0000 mm N/A 74.00 mm N/A 3400 rpm N/A 247000 N N/A 245000 N
316-RD N/A 80.000 mm N/A 170.0000 mm N/A 78.00 mm N/A 3000 rpm N/A 255000 N N/A 260000 N
317-RD N/A 85.000 mm N/A 180.0000 mm N/A 82.00 mm N/A 2900 rpm N/A 291000 N N/A 310000 N
318-RD N/A 90.000 mm N/A 190.0000 mm N/A 86.00 mm N/A 2700 rpm N/A 302000 N N/A 325000 N
319-RD N/A 95.000 mm N/A 200.0000 mm N/A 90.00 mm N/A 2600 rpm N/A 325000 N N/A 360000 N
320-RD N/A 100.000 mm N/A 215.0000 mm N/A 94.00 mm N/A 2400 rpm N/A 345000 N N/A 400000 N
321-RD N/A 105.000 mm N/A 225.0000 mm N/A 98.00 mm N/A 2200 rpm N/A 371000 N N/A 415000 N
322-RD N/A 110.000 mm N/A 240.0000 mm N/A 100.00 mm N/A 2100 rpm N/A 416000 N N/A 510000 N
324-RD N/A 120.000 mm N/A 260.0000 mm N/A 110.00 mm N/A 2000 rpm N/A 436000 N N/A 600000 N
326-RD N/A 130.000 mm N/A 280.0000 mm N/A 116.00 mm N/A 1800 rpm N/A 475000 N N/A 695000 N
328-RD N/A 140.000 mm N/A 300.0000 mm N/A 124.00 mm N/A 1700 rpm N/A 572000 N N/A 800000 N
Unit of Measure
1 2