Tapered Roller Bearing, Made of Chrome Steel, Carbon Steel, and Stainless Steel Materials Grease/oil as per your requirement Tapered Roller Bearing, Made of Chrome Steel, Carbon Steel, and Stainless Steel MaterialsKey Specifications ... , 30300, 32200, 32300, 33000, and more Ring material: chrome steel, carbon steel, and stainless steel Tolerance grade: GB/T307.1-205 ID size: 10 ...