D6D Bulldozer Bottom Track Rollers Double Flanged OEM Supported

Roller Body: Forged by 40Mn2 steel, which has good strength and wear – resistance.

Center Shaft: Forged by 42CrMo steel, with high strength and good toughness.

Heat Treatment

Roller Body: The surface heat treatment hardness is HRC 48 – 55, and the heat – treatment depth is 5 – 8 mm.

Center Shaft: The surface heat – treatment hardness can reach HRC 48 – 55, which is more wear – resistant, and the core hardness is HRC 28 or above, not easy to fracture.