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Ningbo KaiCheng Bearings Manufacturing Co., Ltd.
[China (Mainland)]

Online Postings:. Products [135] Trade Leads [131]
Business Type:Manufacturer,Trading Company,Agent,Distributor/Wholesaler,Service,Association,Other
City: Ningbo
Province/State: Zhejiang
Country/Region : China (Mainland)

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	Ningbo KaiCheng Bearings Manufacturing Co., Ltd.

Bearing collar and roller material

Nov 25, 2008 10:37:27 AM

The best material for rolling bearing is high carbon chromium bearing steel, which features desired hardness, strong rolling fatigue resistance, wearing resistance and stable dimension. Its chemical composition is:

Chemical composition of bearing steel GCr1

Element(wt%)	C 0.95-1.05	Cr 1.40-1.65	Si 0.15-0.35	Mn 0.25-0.45	P =0.027	S =0.02
Element(wt%)	Ni <0.23	Cu =0.25	Mo =0.1	Sn <0.03	As <0.04	Ti <0.005
Element(wt%)	Sb <0.002	Pb <0.002	O<0.001	Al <0.05	Ca <0.01	-

Corresponding designation equivalent GCr15

CHINA	ISO	USA	GERMANY	JAPAN	SWEDEN
GCr15	683/XVⅡ	52100 (ASTM)	100Cr6 (DIN)	SUJ2 (JIS)	SKF3

Staintess steel

Steel No.	Chemical composition%
Steel No.	C	Si	Mn	P	S	Cr	Mo
AISI-440C	0.95-1.2	<1.0	<1.0	<0.04	<0.03	16-18	<0.75