VOE14599920 Final Drive Assembly Final Drive / Travel Motor for EC300 travel

The Final Drive Assembly (Part No. VOE14599920) for the EC300 hydraulic excavator is a large-displacement, high-torque travel propulsion unit engineered for heavy mining, quarrying, mass earthmoving, and major infrastructure construction in the 30-ton machine class. This assembly integrates a robust axial piston hydraulic motor with a heavy-duty multi-stage planetary reduction gearbox, delivering powerful tractive effort and dependable travel performance under punishing load conditions encountered in open-pit mining, road construction and bulk excavation operations.

• Large High-Torque Motor: The high-displacement swashplate piston motor delivers strong starting torque and precise speed control, enabling stable tracking on steep haul ramps, soft overburden, and highly uneven terrain typical of 30-ton-class mining and mass excavation operations.
• Heavy-Duty Multi-Stage Planetary Reduction: The gearbox employs case-hardened, precision-ground alloy steel planetary gears with induction-hardened shafts and high-capacity bearings, ensuring uniform load distribution across multiple reduction stages and maximizing service life between major rebuilds.
• Complete Assembly Integration: Supplied as a fully assembled final drive with the travel motor pre-mounted, reducing installation time, minimizing on-site assembly errors, and getting the machine back into production faster.
• Heavy-Duty Structural Integrity: The high-strength ductile iron housing features massive reinforced ribbing and stress-relieved construction to resist structural fatigue under continuous shock loading from tramming over rough quarry floors and haul roads.
• Precision OEM Replacement Fit: All mounting bolt patterns, pilot diameters, spline connections, and hydraulic port locations match original specifications, enabling straightforward installation with minimal machine downtime.

• Hydraulic System Care: Routinely inspect case drain lines for restrictions, kinks, or blockages. A restricted drain line can generate excessive back pressure, leading to catastrophic motor rotary group failure or seal damage. Maintain strict hydraulic fluid cleanliness standards and replace return filters at intervals prescribed for heavy mining equipment.
• Gear Oil Management: Fill the planetary housing with the recommended extreme-pressure gear oil of the correct viscosity grade for heavy-duty applications. Change the oil every 250-500 operating hours under normal conditions, and every 250 hours in severe applications such as continuous mining, quarry work, or heavy ripping.
• Mounting Bolt Protocol: When reinstalling the final drive assembly, always fit new high-strength bolts meeting the specified grade. Apply a suitable thread-locking compound to the bolt threads prior to torquing to factory specifications.
• Pre-Operation Priming Procedure: Before initial startup or after final drive replacement, fill the motor housing with clean hydraulic oil to purge trapped air pockets. Run the machine at low idle for several minutes to ensure complete lubrication of all planetary components.

Guangzhou Tieqi Construction Machinery Co., Ltd. (IRON CAVALRY) is strategically located in Guangzhou's Huangpu District. With nearly 15 years of experience, we specialize in engineering machinery hydraulics and are committed to delivering practical solutions.

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For large items, we use sturdy plywood crates secured with metal fasteners. Products are cushioned with bubble wrap and secured with wooden braces, with special attention given to protecting vulnerable parts. External reinforcement includes high-strength PET plastic strapping and waterproof wrapping.

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