GWG bearings usually adopt GCr 15 to produce ring and rolling element,
Also we can produce according to your nominated material.The Chemical Composition, See Table 1The contrast of Bearing Steel No.of each country ,See Table 2.
Table 1
Chemical Composition(%)
No.
C
Mn
Si
Cr
S
P
Ni
Cu
HB
<
Gcr15
0.95~1.05
0.20~0.4
0.15~0.35
1.30~1.65
0.02
0.027
0.3
0.25
170-207
Table 2
Country
China
International Standard Organization
U.S.A
Germany
Japan
Sweden
Bearing
GCR15
683/XVIII
(AISI)52100
(Din)100Cr6
(Jis)SUJ2
SKF3
Steel number
According to the international standard, the precision of GWG Bearing can be divided into five grades:
P0,P6,P5,P4,P2
The grade of tolerance is in accordance with the standard of GB/T307.1-94
The Contrast of Bearing precision, Pls see Table 3