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Chemical composition and data characteristics of bearing data

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The inner ring of the bearing and the steel ball are bearing steel (vacuum heat treatment). Most of the bearings; the use of SUJ2 in JIS steel, which is the chemical composition of domestic chrome steel (GCr15). SUJ2; in countries all over the world; As a bearing material has been standardized. For example: with AISL52100 (United States), DIN100Cr6 (West Germany), BS535A99 (UK) are the same kind of steel. Use this information; useful to improve the bearing's torque function, reduce noise; Lifespan. But in humid or high temperature environment; need to use martensitic stainless steel data. Chemical composition <br> Rolling bearing steel: GCr15; GB/T18254 2000 "high carbon chromium bearing steel"

Consistent digital code	trademark	chemical composition;%
B00150	GCr15	C	Si	Mn	Cr
		0. 95~1. 05	0. 15~0. 35	0. 25 ~ 0. 45	1. 4~1. 65
Pay attention to: 1 The residual copper content (smelting analysis) of steel for bearing steel pipes should not exceed 0. 20%. 2 Oxygen content is determined on steel billets or steel. 3 The sulfur content of the steel for wire rod (smelting analysis) should be no more than 0. 020%.

Austenitic stainless steel: 1Cr18Ni9; GB 1220 92 "stainless steel rod"

trademark	chemical composition;%
1Cr18Ni9	C	Si	Mn	P	S	Ni	Cr	Mo
	≤0.15	≤1.00	≤2.00	≤0.035	≤0.030	8.00~10.00	17.00~19.00	-

Martensitic stainless steel: 9Cr18; GB 3086 82 "high carbon chromium stainless bearing steel"

trademark	chemical composition;%
9Cr18	C	Si	Mn	P	S	Cr	Mo
		no greater than
	0.90~1.00	0. 8	0. 8	0.035	0.03	17.00~19.00	-

Data characteristics

data	Inner and outer ring, steel ball	Bearing steel		stainless steel
	Persistence	Cold rolled steel strip (SPCC BQB402), stainless steel sheet (1Cr18)	Polyamide (nylon 66), etc.	Stainless steel plate, polyamide, etc.
	Dust cover	Cold rolled steel strip (SPCC BQB402), stainless steel sheet (1Cr18)		Stainless steel plate
	Seal ring	Rubber (NBR, Viton) + skeleton (SPCC BQB402), PTFE (Teflon)		NBR+SPCC BQB402, Teflon, etc.
characteristic	Operating temperature	Below 120 ° C		Below 300 ° C
	Extra dynamic load	Big		About 80% of bearing steel
	Additional static load	Big		About 80% of bearing steel
	Conflict torque	low		high
	usefulness	Ordinary use. High precision	High speed	Corrosion resistance and high resistance

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