shop D8H D8K Flange Track Roller 6P4898 6P4897 For Bulldozer Undercarriage

Roller Shell: Forged 50Mn alloy steel (tensile strength: ≥850 MPa)

Shaft: 42CrMo alloy steel (yield strength: ≥650 MPa)

Seals: Double floating seals (high-chromium molybdenum alloy, HRC 65–70) + EPDM rubber O-rings

Weight: ~120–130 kg per roller

Finish: Black epoxy-polyester powder coating (thickness: 80–100 μm)

Warranty: 12 months or 1,800 working hours (whichever comes first)