The 6316C3 single row heavy-duty deep groove ball bearing features C3 enlarged internal clearance, standard dimension 80×170×39mm. The 6300 series large steel ball structure delivers outstanding radial load capacity and accommodates slight bidirectional axial load simultaneously. C3 extra clearance reserves sufficient expansion space under long-hour high-speed & high-temperature operation, effectively eliminating seizure risk caused by ring thermal expansion. Open structure supports separate assembly of ZZ metal dust shield or 2RS rubber seal, widely applied in large industrial motors, heavy cooling fans, mining conveyors, cement equipment and high-load transmission shafts running under elevated temperature.