Stainless Steel Bearing Units

440 stainless steel bearing

440 stainless steel bearing is a stainless steel bearing of standard structure. The rings and steel balls are all AISI SUS440C (9Cr18Mo or 9Cr18) and vacuum quenched and tempered. The cage and seal ring skeleton are made of AISI304 or AISI316, with accuracy up to ISO standard ABEC-5 and vibration level of group Z3. The high-performance AISI 440C stainless steel bearing provided by Lili also provides high precision and wear resistance comparable to chrome steel (bearing steel) on the basis of corrosion resistance. As a standard structure, the stainless steel bearing is the most widely used stainless steel bearing at present. Its advantages are affordable, high hardness, and can withstand high load and high speed.

316 stainless steel bearing

Compared with high carbon chromium martensitic stainless steel (440C), 316 stainless steel bearings have better corrosion resistance and diamagnetism. The austenitic stainless steel bearing is made of AISI SUS316L (316) or SUS304 (including inner and outer rings, balls and cages). Because austenitic stainless steel cannot be hardened as a whole, the bearing is not suitable for large load and high speed. However, it has great advantages in rust resistance and corrosion resistance. It is widely used in chemical and electronic industries. The corrosion resistance of 316 stainless steel bearing is superior to 304 stainless steel, and it has good corrosion resistance in the production process of pulp and paper. In addition, 316 stainless steel is also resistant to marine and corrosive industrial atmosphere.

304 stainless steel bearing

304 stainless steel bearing is a kind of common stainless steel bearing. Its corrosion resistance is better than 440C stainless steel, but its price is cheaper than 316 stainless steel. The chemical grade of 304 stainless steel is 06Cr19Ni10. The old grade (0Cr18Ni9) contains 19% chromium and 8-10% nickel. 304 stainless steel is the most widely used chromium nickel stainless steel, which has good corrosion resistance, heat resistance, low temperature strength and mechanical properties. It is resistant to corrosion in the atmosphere. If the area is heavily polluted by industrial gases, it needs to be cleaned in time to avoid corrosion. Suitable for food processing, storage and transportation. It has good processability and weldability. Plate heat exchanger, corrugated pipe, household products, building materials, chemistry, food industry, etc. 304 stainless steel is a nationally recognized food grade stainless steel.