There are many types of bearing materials, among which stainless steel is probably one of the most commonly used bearing materials. Compared with ordinary bearing steel (Chrome steel GCr15/100 Cr6/SUJ2), stainless steel bearing not only have obvious advantages in material, but also much strict in process and precision control than ordinary bearing. It is more stable, has low noise and stronger anti-rust and anti-corrosion properties, it can be used in the condition of -60℃-+300℃with proper lubricant and shields
1. Excellent corrosion resistance: with strong corrosion resistance, stainless steel bearing is not easy to rust. And it will not react easily with water or liquid, can be washed with water.
2. Compared with steel material, stainless steel bearing is clean and has longer operating life.
3. High heat resistance can be operated in high temperature range from 180-1000 °F, therefore it can be adapted to all kinds of weather conditions, even if it’s very hot, we can cool it down with water.
Stainless Steel Bearing includes
SS440 Stainless Steel Bearing (Generally inner/outer ring/balls and rollers is SS440, cage is SS304): It is a kind of high-strength cutting tool steel with slightly higher carbon content. It can obtain higher yield strength after proper heat treatment, hardness can be up to 58HRC, with magnetic properties and it’s one of the hardest stainless steel.
SS304 Stainless Steel Bearing (Most commonly used in pillow block): It’s also a universal used stainless steel material. It’s good at high temperature resistance, and the general temperature limit is ≤650℃. 304 stainless steel has excellent corrosion resistance, but it’s soft, can not used high bearing force condition, because it will be easy to deform.
SS420 Stainless Steel Bearing (Generally inner/outer ring/balls and rollers is SS420, cage is SS201)
SS316 Stainless Steel Bearing
Main Reasons for Stainless Steel Bearing Fracture Failure
The main reasons for stainless steel bearing fracture failure are defect and overload. When the external load exceeds the material strength limit, it’s called overload fracture. The main reason for overload is the sudden failure or improper installation. The defects of bearing parts, such as microcrack, shrinkage cavity, air bubble, large foreign objects, overheated structure and local burn, can cause fracture at the defect points when overloaded or severe vibration.