Excavator Undercarriage Parts PC400 Track Roller For KOMARSU
Wheel: Forged by 50Mn2 round steel material with good hardenability;Heat treatment process + medium frequency quenching.Surface hardness achievable HRC55-60, hardened layer depth up to 6-8mm, ensuring it's strength and durable. Center shaft: 50Mn2 round steel material, medium frequency surface quenching heat treatment + quenching and tempering process, surface hardness HRC55/60, hardened layer depth up to 3-5mm, has excellent mechanical properties. Floating oil seal: high Chromium and Molybdenum alloy,hardness HRC65-72,working bright strip has roughness 0.1um-0.2um. O-ring: It's made of butadiene with acrylonitrile and butadiene rubber copolymerized. Features: It has better oil resistance and high temperature resistance.