Komatsu HD1500-8 Rigid Dump Truck Final Drive 562-22-50820 562-22-50830

The 562-22-50820 and 562-22-50830 Final Drive Assemblies are heavy-duty planetary gear reduction units engineered specifically for the Komatsu HD1500-8 rigid frame dump truck, operating in the 140-150 ton payload class. This assembly integrates a high-torque hydraulic motor with a multi-stage planetary gear train enclosed in a rugged ductile iron housing, delivering exceptional wheel-end torque and reliable retardation performance for extreme mining haul cycles.

These Komatsu HD1500-8 dump trucks are deployed in large-scale mining operations worldwide, and our final drives are specifically engineered for regional demands:

• Chile & Peru Copper Mining: Features enhanced corrosion-resistant coatings and upgraded seal materials to withstand acidic water exposure and high-altitude thermal stress at 4,000+ meters elevation
• Australia Iron Ore & Coal Regions: Incorporates induction-hardened bearing journals and heavy-duty tapered roller bearings to handle continuous high-speed loaded runs on unpaved haul roads
• Indonesia & South Africa Overburden Operations: Equipped with reinforced planet carrier assemblies and shot-peened gear sets to resist shock loading during heavy loading cycles on steep grade profiles

• High-Capacity Torque Transmission: Engineered with larger diameter sun gears and planet gears to distribute load evenly across multiple gear meshes, providing superior torque density for steep ramp climbing
• Seamless OEM Compatibility: All mounting flange dimensions, pilot diameters, and hydraulic port thread configurations match original Komatsu specifications for direct bolt-on replacement without modifications
• Enhanced Retarder Integration: Optimized internal oil circuits complement the truck's hydraulic retarder system, providing consistent cooling flow during prolonged downhill braking operations
• Dual-Lip Contamination Barrier: Heavy-duty floating seals with secondary dust wiper lips prevent ingress of fine silica dust, mud, and water, extending service intervals in harsh mining environments

• Hydraulic Motor Case Drain Maintenance: Verify the case drain line is routed directly to tank without restrictions; elevated back pressure will damage the motor shaft seal. Replace hydraulic filter elements every 250 hours and analyze oil samples for wear particle trends.
• Final Drive Gear Oil Management: Change gear oil every 500 hours or 6 months, whichever comes first. Use extreme pressure gear oil (SAE 80W-140 or Komatsu 20G-60-21220 equivalent). Inspect drain plug magnets for ferrous debris indicating gear or bearing degradation.
• Wheel Stud Torque Protocol: Use new studs and nuts each time the final drive is installed. Apply heavy-duty thread lubricant and tighten in a cross pattern sequence to manufacturer specification of 1,800 ± 100 N*m to prevent stud fatigue failure.
• Pre-Fill and Bleeding Procedure: Before first operation after installation, completely fill the motor case with filtered hydraulic oil through the upper port until oil emerges from the case drain. Crank the engine and slowly rotate the drive to purge trapped air from the system, preventing cavitation damage during initial load.

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 and upholding our responsibilities.

Our efficient execution and rigorous manufacturing approach ensure our products meet over 95% of original performance specifications. This commitment has built widespread trust in the industry.

We maintain 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 particular expertise in large mining excavator components and hard-to-find items.

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.

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