Chemical composition and data characteristics of bearing data

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Chemical composition and data characteristics of bearing data

Source: Bearing network time: 2013-05-24
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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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