... time 3.new type high durable life 4.ISO9001:2000 Thrust ball bearing 51113Serise:51100,51200,51300,51400,52200,52300Brand:NSK,KOYO,SKF ... , mechanical manufacturing, food, medicine, automobiles, textiles, and chemicals etc.Features,Thrust ball bearings from the seat, shaft rings and balls in the ... the ring, and the shell with the said seat. Chrome steel GCr15 Thrust ball bearing 51113