Seller notes

Rollers are made from bearing steel (JIS SUJ-2/SAE 52100/DIN 100 Cr6) and have been subjected to heat treatment and precision grinding radius diameter deviation, the hardness is HV700-860 (HRC60-66). All the raw material comes from Japan directly. High-purity Chromium Molybdenum alloy steel (JIS SCM415) with Carbon Nitriding heat treatment process. The hardness specification is approximately HV500 to HV600; it always can meet the requirement of high-speed engine applications. Heat treated and gr...

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