EX30 EX60 EX150 Excavator Undercarriage Parts HITACHI Track Roller Assy is for sale

Double floating seals (high-chromium alloy, HRC 65–70) to prevent oil leakage and block contaminants (mud, dust, water).

Temperature-resistant O-rings: Nitrile (for EX30/EX60, -40°C to 120°C) or FKM (for EX150, -20°C to 200°C) for harsh conditions.

Pre-filled with high-performance lithium-based grease (NLGI 2) for lifetime lubrication, eliminating maintenance needs.

Single or double flange options (model-dependent) to guide track chains and prevent lateral slippage.

Smooth tread finish (Ra ≤ 0.8 μm) to minimize friction with track links, extending service life.