The 6300 series is has a larger ball complement and heavier races, which provide greater radial, thrust, and combined load capacities. 

ZBF can manufacture:

6000 series

6004 6003 6004 6005 6006 6007 6008 6009 6010 60116012 6013 6014 6015 6016 6017 6018 6019 6020 6021 6022 6024 6026 6028 6030 6032 6034 6036 6038 6040 6042 6048 6052

6200 series 

6202 6203 6204 6205 6206 6207 6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 6222 6224 6226 6228 6230 6232 6234 6236 6238 6240 6244 6248 

6300 series

6301 6302 6303 6304 6305 6306 6307 6308 6309 6310 6311 6312 6313 6314 6315 6316 6317 6318 6319 6320 6322 6324 6326 6328 6330 6332 6334 6336 6338 6340 6344

6400 series

6405 6406 6407 6408 6409 6410 6411 6412 6413 6414 6415 6416 6417 6418 6420

Deep groove ball bearings Clearenc: C0 C2 C3 C4 C5

Deep groove ball bearing Application: Fan, motor, machine tools, cement plants, power plants, transmission, instruments and meters, electrical, household appliances, internal combustion engines, transportation vehicles, textile machinery, agricultural machinery, construction machinery, engineering machinery, and other areas of the industry.

http://www.deepgroveballbearings.com/