Bearing material

Bearing rings materials and components to a large extent determine the properties and performance bearings, Shuanglian materials and components supplier selection on a rigorous checks.
Shuanglian bearing materials and components are from the world's leading bearing manufacturer supplier from the fundamental solution to the problem of long-standing differences in materials and bearings
Shuanglian has a strict inspection system and complete the purchase. Each batch of steel and components prior to storage, have to go through systematic tests, including materials elemental analysis, metallurgical analysis, accuracy test and so on.

Materials rings and rolling elements
Bearing rings and rolling material used mainly carbon chromium bearing steel, corrosion-resistant requirements when using martensitic stainless steel. The following table shows the rolling bearing rings and the component material.

Since 2000, with the famous double foreign steel mills, joint development of high purity bearing steel, to reduce oxides and harmful non-metallic inclusions. Compared with ordinary bearing steel, its strength and quality has improved significantly.

Cage materials
When Cage materials have good abrasion resistance, dimensional stability and strength of the metal, so the choice of the holder material, it is important to consider the operating environment.

Sheet steel cage
These lightweight cages have high strength, surface-treatment can effectively reduce friction and wear. The following table is a material component of cold rolled steel sheet.

Brass cage 
Sized bearings cutting brass cage, brass cage but does not apply to the use of ammonia cooling compressor, because ammonia can cause brass seasonal break, and should therefore be replaced with a steel cage.

Nylon cage
According to the bearing types and uses, nylon cage use more widely, but should not be applied to more than 120 ℃ or lower than minus 40 ℃ environment, the holder of the majority of cast molding nylon PA66, this material or with or without glass fiber reinforced strength and flexibility characteristics is a good combination.

Nylon elastic strength of the material depends on the temperature and other mechanical properties, as well as permanent alteration of the operating conditions, i.e., aging. In this aging behavior of the most important contributing factors are the temperature, the contact time and the medium (lubricant). Glass fiber reinforced polyamide PA66 aging relationship as shown at right. Cage life with aggressive rise in temperature and lubricant shortened, so nylon cage is suitable for a particular purpose, depending on the operating conditions and life requirements.

Dust cover and seal material
Dust cover material
Standard materials ZGSL dust cover bearing tin plating cold-rolled steel sheet, and sometimes use of stainless steel AISI-300

Seal material
Nitrile rubber seals mainly as a material for high temperature, the fluorine rubber is also widely used.

Caveat!At 200 ℃ below normal operating conditions Viton is safe and harmless, but Chaoguo 300 ℃ limit temperature, which is equivalent to cutting steel fire. Viton will release smoke. These smoke inhalation is harmful to humans, including the eyes, the other to avoid contact with the skin.