208-27-00411 208-27-00421 Final Drive for KOMATSU PC390LC-10 PC400-7 PC400LC-7

• Part Name: Full Final Drive (Hydraulic Travel Motor + Two-Stage Planetary Reducer Integrated Assembly, Track Drive Device)
• Main OEM Part Numbers:

  Left side: 208-27-00411

  Right side: 208-27-00421

• Cross Interchange Part Numbers:

  208-27-71651, 208-27-71183

  Matched internal travel motor head PN: 706-8J-01012, 706-8J-01030, 706-8J-01411, 706-8J-01421

• Compatible 40 Ton Class Heavy Excavator Models:

  Komatsu PC390LC-10

  Komatsu PC400-7, PC400LC-7

  Universal fit for PC400-8, PC400LC-8, PC450-7, PC450LC-7, PC450-8, PC450LC-8

• Available Quality Options:

  ✅ Genuine Original Factory New

  ✅ Professionally Fully Rebuilt (All wear parts replaced + bench calibrated)

  ✅ High Precision Premium Aftermarket New

• Warranty Policy: 12 months for Genuine & Rebuilt units; 6–12 months for aftermarket assemblies
• Approximate Net Weight: ~800 kg
• Stock Status: In stock, shipped out within 3–7 working days after order confirmation

• Original Komatsu integrated design, perfectly matched hydraulic system configuration of PC390/PC400 series heavy excavators
• Built-in two-speed shift valve: high-speed mode for site relocation, low-speed high-torque mode for climbing, muddy terrain and heavy mining excavation
• Integrated spring-applied hydraulic-release multi-disc parking brake + built-in counterbalance valve, effectively preventing track sliding on slopes and eliminating hydraulic shock during forward/reverse switching
• Double planetary reduction gear structure, large output torque, strong overload resistance, stable performance for long-cycle mining & bulk earthmoving harsh working conditions
• Direct bolt-on replacement, identical mounting hole pattern, oil port layout, sprocket hub spline interface; no cutting, welding or machining modification required during field repair
• Forged alloy steel planetary gears with quenching & tempering treatment for superior wear resistance; thick cast iron housing with multi-lip floating seal structure, excellent mud, water and dust intrusion resistance
• Every finished assembly passes full hydraulic pressure testing, internal leakage inspection, brake function verification, two-speed shift test and no-load running endurance check before delivery; ISO9001 & CE certified

• Overall Structure: Complete Final Drive (Travel Motor + Two-Stage Planetary Reducer)
• Motor Type: Variable Displacement Axial Piston Travel Motor
• Max System Relief Pressure: 37.3 MPa (373 bar)
• Working Mode: Switchable High/Low Two-Speed Travel
• Brake Type: Spring-applied static parking brake, hydraulic release
• Reduction Structure: Two-stage planetary gear reduction
• Side Definition: 208-27-00411 = Left Hand, 208-27-00421 = Right Hand
• Output Interface: OEM standard spline matching sprocket hub

PC390LC-10, PC400-7, PC400LC-7

208-27-00411, 208-27-00421, 208-27-71651, 208-27-71183

706-8J-01012, 706-8J-01030, 706-8J-01411, 706-8J-01421

PC400-8, PC400LC-8, PC450-7, PC450LC-7, PC450-8, PC450LC-8

• Over 13 years specialized in full final drive assemblies for 39–49 ton Komatsu heavy mining excavators
• Three quality grades available to meet different budget and site working condition requirements
• Strict incoming & outgoing QC inspection system to guarantee stable long-term service life
• Sufficient inventory stored in Guangzhou warehouse, flexible sea freight & air freight global shipping solutions
• Professional engineering team provides on-site installation guidance, fault troubleshooting and long-term technical after-sales support
• One-piece complete assembly solution, convenient direct replacement to shorten machine downtime

A: 208-27-00411 is left side final drive, 208-27-00421 is right side final drive, they cannot be cross-installed left/right.

A: Yes, this final drive uses interchangeable motor head (706-8J series part numbers). If the reduction gearbox is intact, only replacing the faulty motor head can save maintenance cost.

A: Rebuilt final drive replaces all worn internal consumable parts (piston, valve plate, planetary gears, friction plates, oil seals), fully bench-tested to OEM performance standard with competitive price; Genuine New is original factory brand-new assembly complying with full factory specification.

A: Products are ready in stock, dispatched within 3–7 working days after order confirmation, global sea & air shipping options available.