komatsu D85E-21 excavator track roller

komatsu D85E-21 excavator track roller More than 300 configurations of single flange, double flange and inner flange rollers suitable for bulldozers and track-type machines. forged roller shell made kf quality steel refines metal gains to form forge flow line with reasonable distribution as stress characteristic heat-treatment, which is integrate heating and surface spray cooling under high pressure, to improve internal mechanical properties to prevent deformation under heavy load, meanwhile high surface hardness and deep harden depth result longer life. heat-treated and induction hardened shaft made of quality steel to guarantee resistance to wear and heavy load.