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 ground to precision tolerances for reduced heat and extended life