Deep groove ball bearing is suitable for high speed or even extremely high speed operation, and it is very durable without regular maintenance. This kind of bearing has small friction coefficient, high limit speed and various size ranges and forms. It is used in precision instruments, low-noise motors, automobiles, motorcycles and general machinery industries. It is the most widely used type of bearing in the machinery industry. It mainly bears radial load and a certain amount of axial load.
Introduction to stainless steel materials
1. Sus420 stainless steel
420 stainless steel is a kind of martensitic stainless steel, which has certain wear resistance, corrosion resistance and high hardness. It is suitable for all kinds of precision machinery, bearings, electrical equipment, instruments, instruments, transportation tools, household appliances, etc. It is mainly used for manufacturing parts resistant to atmospheric, water vapor, water and oxidizing acid corrosion
2. Sus440 stainless steel (9Cr18Mo)
Martensitic stainless steel has higher carbon content than Cr13 steel, so its strength and hardness are higher than Cr13 steel. Other properties are similar to Cr13 steel. But its weldability is poor. It is usually not used as welding material. It is used for manufacturing surgical and medical tools. It also has good high-temperature dimensional stability, strong corrosion resistance and toughness. Now it is more widely used in hand knives and high-quality factory tools.