... 47mm to 300mm:3.Material:bearing steel/chrome steel--China,(AISI)52100--American,(Din)100Cr6--Germany4.Certificates:ISO9001:2000,ISO ... , Motor, Pump, Fan, Air conditioner, Microwave Oven ,Sewing Machine, Massage Chairs, Agriculture Machinery, Fitness equipment, Washing Machine, Office equipment. Bearing ... 53.37UC2189016096 3739.756.312M12×1.54.36 Inch ball bearing UC204 / Pillow block bearing