Stainless steel bearing series product introduction

Compared with common steel bearings, stainless steel bearings can be widely used in the working conditions that common steel bearings are not suitable, due to the unique features such as acid and alkali-resistance corrosion-resistance, etc.Stainless steel bearings can operate properly in seawater, river water, distilled water, dilute nitric acid, oceanic climate, steam and other corrosive mediums.They also can be used in a large range of temperature from-253℃to 350℃for the property of temperature-resistance.

The materials usually used for stainless steel bearings in our company includeS US440C, SUS 304, SUS316L, and so on. SUS440Cis martensite stainless steel; SUS304andSUS316L are both austenitic stainless steels.Nonmagnetic and corrosion-resistance are the main properties of Austenitic stainless steel.However, austenitic stainless steel can not be quenching treated, which leads to low hardness, so Austenitic stainless steel bearings are appropriate for the conditions of low speed and low load.

SUS304, SUS316, SUS316L: Austenitc stainless steel bearings inner ring, outer ring, ball, cage, rivet, housing, bearing peak thread, shield, seal and frame of the seal. Martensite stainless steel bearings cage, rivet, housing,bearing peak thread, shield and frame of the seal. SUS440C. SUS440B: Martensite stainless steel bearings inner ring, outer rings and ball.

Contrast of stainless steel grades in different countries

Contrast of chemical composition of stainless steel grades

Stailess steel NO.	C%	Cr%	Si%	Mn%	S%	P%	Mo%	Ni%
SUS440B	0.90-1.00	17-19	≤0.8	≤0.8	≤0.03	≤0.035
SUS440C	0.95-1.1	16-18	≤0.8	≤0.8	≤0.03	≤0.035	0.4-0.7
SUS304(304L)	≤0.07	17-19	≤1	≤2	≤0.03	≤0.035		8-11
SUS316(316L)	≤0.08	16-18.5	≤1	≤2	≤0.03	≤0.035	2-3	10-14

Characteristics of sealing