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Precision Excavator Undercarriage Parts EC55 EC460 VOLVO Mini Track Roller

Roller body: HRC 56–62 (depth: 8–12 mm) Shaft: HRC 52–58 (depth: 5–8 mm) Achieved via medium-frequency induction quenching. Double-conical floating seals made of high-chromium molybdenum alloy (HRC 65–72), ensuring zero oil leakage under extreme conditions . Nitrile O-rings for oil and temperature resistance (-45°C to 120°C) . Forged from premium steel billets, followed by CNC machining to tight tolerances (±0.05 mm) . Heat-treated to enhance core…

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Precision Excavator Undercarriage Parts EC55 EC460 VOLVO Mini Track Roller

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