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/Special Features:Grease/oil ... 30300, 32200, 32300, 33000, and more Ring material: chrome steel, carbon steel, and stainless steel Tolerance grade: GB/T307.1-205 ...