Shanghai Neo-star Machinery&Technology,Co.,Ltd

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Materials
The materials of our bearings inner ring,outer ring, steel balls are adopted with following standard. The materials for retainer can be
0.8F cold rolling steel strap,H62 Brass Sheet, nylon or as per request.

(1)Chemical composition
Item	C	Mn	Si	Cr	S	P	Ni	Co	Mu
Item	C	Mn	Si	Cr	<
Gcr15	0.95-1.05	0.2-0.4	0.15-0.35	1.3-1.65	0.02	0.027	0.3	0.25
AISI440C	0.90-1.05	≤0.7	≤0.8	17-19	≤0.03	≤0.035
AISI440B	0.75-0.9	≤0.8	≤0.8	17-19	≤0.03	≤0.035			1-1.3
AISI304(304L)	0.08(0.03)	≤220	≤1	18-20	≤0.03	≤0.035	8-10.5(9-13)
AISI316(316L)	0.08(0.03)	≤2	≤1	16-18	≤0.03	≤0.035	10-14		2-3

(2)Different name of Bearing steel in different country
Country	USA	Germany	Japan	France	China
Chrom steel	52100	100Cr6	SUJ2	100C6	GCr15
Stainless steel	AISI440		SUS440		9Cr18
	AISI440C	X102CrMo17	SUS440C	Z105CrMo17	9Cr18Mo
	AISI304	X5CrNi8-10	SUS304	Z7CN18-09	0CrNi9
	AISI316	X5CrNiMo17-12-2	SUS316	Z7CND18-12-03	0Cr17Ni12Mo2

Accuracy standard
Country	Standard	Accuracy Grade
International Standard Organization	ISO	0	6	5	4	2
Sweden	SKF	P0	P6	P5	P4	P2
Germany	DIN	P0	P6	P5	P4	P2
Japan	JIS	P0	P6	P5	P4	P2
U.S.A	ANSI	ABEC1	ABEC3	ABEC5	ABEC7	ABEC9
China	GB307.1	0	6	5	4	2