China Slewing Ring Manufacturer, High Quality Cheap Price Machinery Slewing Bearing, 50Mn, 42CrMo Contrast of steel grade: Normally, the slewing bearing material can be 50Mn, 42CrMo ,and 45# steel. You can choose the suitable material according to your specific application andthe slewing ring working conditions.Dec 14, 2019 · SAE AISI 4140 Alloy Steel. SAE 4140 (AISI 4140 steel) is a Cr-Mo series (Chrome molybdenum series) low alloy steel, the material has high strength and hardenability, good toughness, small deformation during quenching, high creep strength and long-lasting strength at high temperature. 4140 Steel Uses. AISI SAE 4140 alloy steel can be made into round steel Ball bearings : NTN SNR, high speed ball bearings. One of the largest ranges of ball-bearings on the market. Prioritise performance and choose from among a range of more than 10,000 active part nuers. Ranging from bore diameters of 1.5mm to 1,320mm, the range of NTN-SNR ball-bearings is one of the broadest and mostprehensive on the market.rporation of Co 2+, Cu 2+, and Zn 2+ ions into nickel oxide thin films and their enhanced electrochemical and electrochromic performances. Int. J. Electrochem. Sci., 17(2022) Article ID: 220125 National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 10608, , ROC.