Welcome to the MTWB Technical Q&A Center. This page addresses common engineering questions on bearing cage materials, speed limits, thermal management and vibration analysis. Our insights cover brass, steel and PEEK cages, helping you optimize selection and maintenance.
GR5 titanium alloy is a high performance material, its chemical composition is carefully designed and optimized. The material is mainly composed of titanium, a small amount of aluminum, vanadium and other alloys that not only improve the strength of GR5 titanium alloy, but also gives it excellent corrosion resistance and high temperature stability.
L605 is a cobalt based alloy which has medium durability and creep strength under 815℃, excellent oxidation resistance under 1090℃, and satisfactory forming, welding and other manufacturing process properties.
Special stainless steel X30CrMoN15-1 (SV30) is the best bearing ring material for aerospace, medical and spindle applications, its mechanical properties are stronger than any existing bearing material, its corrosion and temperature resistances are excellent, up to 450℃. Martensitic stainless steel is gotten from raw steel by reducing the carbon content and introducing nitrogen as an agent over the alloying process. Nitrogen increases the saturation of chromium, which is converted to chromium nitride instead of chromium carbide, resulting in a high-strength, high-hardness steel with excellent microstructure that can extend the fatigue life by 100% (twice) in some applications. This material also offers enhanced corrosion resistance, better than 440C and ACD34 (5 times higher).
SS X65Cr13 is commonly used for miniature bearings in cutting tools or surgical applications. It is a martensitic alloy steel with a higher carbon content and has a <7% retained austenite value. Its corrosion resistance is compatible to 440C.
Material selection depends on your application's operating conditions rather than using a single material for every bearing. Factors such as operating temperature, rotational speed, load, corrosion exposure, lubrication, wear resistance, fatigue life, and expected service life all influence the best material choice. MTWB's engineering team has extensive experience recommending materials beyond conventional GCr15 bearing steel, including stainless steel, M50 tool steel, titanium alloy, cobalt alloy, ceramic materials, and precision engineering plastics. By matching the material to the application, customers can achieve improved reliability, longer bearing life, and lower maintenance costs.
