Sany SY75 SY75-8 SY75C-9 SY95C Final Drive Unit | 7-10 Ton Excavator Travel Motor Gearbox

The Sany SY75 and SY95 Series Final Drive Assembly is the high-performance propulsion system designed for Sany’s most popular small-to-midsize excavators. Engineered for the 7.5 to 10-ton machine class, this unit integrates a high-efficiency 2-speed hydraulic piston motor with a rugged planetary reduction gearbox. It provides the reliable tractive effort and "straight-line" tracking precision required for urban construction, forestry, and utility site preparation.

Restoring Precision Tracking and Tractive Effort The Sany SY75 and SY95C are the workhorses of the Sany fleet, known for their rapid cycle times and durability. However, the final drive is the mechanical "muscle" that converts hydraulic flow into movement. If your machine is "drifting" to one side (tracking drift) or struggling to climb steep embankments, your internal travel motor is likely experiencing volumetric efficiency loss.

Our premium replacement units are manufactured to handle the specific hydraulic flow curves of Sany’s load-sensing systems. Built with induction-hardened gears and high-load bearings, this assembly eliminates the "sluggish" tracking common in high-hour machines and ensures synchronized movement, allowing for safer trailer loading and more precise trenching.

These Sany excavators are global staples, and our drives are optimized for:

• Southeast Asia & Oceania: Features reinforced "Duo-Cone" floating seals to prevent the ingress of abrasive volcanic dust and tropical mud, which are notorious for destroying gearbox internals in island infrastructure projects.

• North America & Europe: Optimized for the Rental and Construction sectors. Our drives are built for high-duty cycles and are fully compatible with modern high-pressure hydraulic systems and standard low-noise regulations.

• Africa & Middle East: Engineered with enhanced thermal dissipation properties to keep gear oil temperatures stable during long transport distances in high-ambient desert heat.

• The "Silent Killer" (Case Drain Pressure): Sany machines use high-pressure hydraulics. Before installing your new motor, you must ensure the case drain line is clear. A blockage here will blow the shaft seal of your new motor within minutes.

• Gear Oil Management: Change the planetary gear oil every 500 operating hours. Check for a "milky" appearance frequently—this indicates water ingress that will quickly grind down your planetary gear teeth.

• Sprocket Bolt Maintenance: These machines generate significant torque. Always use new Grade 10.9 or 12.9 bolts and a high-strength thread locker to prevent the sprocket from working loose and damaging the drive flange.

• System Priming: Never run a new travel motor "dry." Fill the motor case with clean hydraulic oil through the highest port before starting the engine to ensure instant lubrication.

Guangzhou Tieqi Construction Machinery Co., Ltd. (IRON CAVALRY) is strategically located in Guangzhou's Huangpu District, approximately an hour from Baiyun International Airport. We have been a dedicated specialist in engineering machinery hydraulics for nearly 15 years.

Driven by our core values of "Pragmatism and Progress," we are committed to delivering practical solutions and upholding our responsibilities. This principle-driven approach defines all our operations and client partnerships.

In China's excavator hydraulic assembly sector, our efficient execution and rigorous approach to manufacturing every product to meet over 95% of original performance specifications have built widespread trust. This has made us a destination for industry peers and clients seeking knowledge and reliable supply.

Our capability is backed by a ready inventory of over 500 assembly types, providing access to more than 6,000 different parts. Hydraulic pump, control valve, travel, and swing assemblies are our core products, with a distinct advantage in large mining excavator components and hard-to-find items.

Our 4,000-square-meter factory in Guangzhou is equipped for professional manufacturing, precision assembly, rigorous testing, and quality certification, ensuring reliable performance and timely delivery for every order.

For large items, we use sturdy plywood crates secured with metal fasteners for added stability. Inside, the products are cushioned with bubble wrap and secured with wooden braces, while special attention is given to protecting vulnerable parts. Externally, the crates are reinforced with high-strength PET plastic strapping and wrapped in highly waterproof black film.

• One-stop solution provider for all your hydraulic component needs
• High-quality products at competitive prices
• Exceptional customer service that makes you feel at home
• Large inventory, short delivery times, and long warranty periods
• Professional expertise with accurate part number identification for excavator components