Needle BearingCaracteristicas: 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 at HV500~HV600; it always can meet the requirement of high
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