Komatsu 706-8J-01411 / 706-8J-01421 Travel Motor (Motor Only, No Reduction Gearbox)

1. Basic Information

• Part Definition: Standalone travel hydraulic motor (motor head only, without planetary reduction gearbox, sold separately for final drive repair replacement)
• Official OEM Part Numbers:
  
  
  Main PN: 706-8J-01411, 706-8J-01421
  
  
  Cross interchange PN:  706-8J-01020, 706-8L-01030
• Compatible Excavator Models (40 Ton Class Heavy Excavator)
  
  
  Komatsu PC390LC-10
  
  
  Komatsu PC400-7, PC400LC-7
  
  
  Komatsu PC400-8, PC400LC-8
• Available Conditions: Genuine Original New / Professionally Rebuilt / Premium Aftermarket New
• Warranty Policy: 12 months for Genuine & Rebuilt motors; 6–12 months for aftermarket units
• Net Weight: Approx. 98 kg
• Stock Status: In stock, shipped within 3–7 working days after order confirmation

2. Key Features

• Original Komatsu variable displacement piston travel motor design, perfectly matched to hydraulic system of PC400-7/-8 & PC390LC-10 series machines
• Built-in two-speed shifting valve, supports high-speed transit mode & low-speed high-torque climbing/mud working mode
• Integrated spring-applied hydraulic-release multi-disc parking brake + built-in counterbalance valve, preventing track slipping on slopes and eliminating hydraulic impact during forward/reverse switching
• Independent motor head structure, convenient for field maintenance: only replace damaged motor unit while reusing original intact reduction gearbox, greatly cutting repair cost
• Exact OEM port layout, mounting bolt pattern, internal spline shaft and valve setting; direct bolt-on replacement with no modification required
• Hardened piston, valve plate and cylinder block, high-pressure resistant housing and upgraded sealing assembly, anti-leakage for long-cycle heavy mining & earthmoving operation
• Every unit passes full pressure testing, internal leakage inspection, brake function and two-speed shifting calibration before delivery; ISO9001 & CE certified

3. Technical Specifications

• Motor Type: Variable Displacement Axial Piston Travel Motor (Motor Head Only)
• Max System Relief Pressure: 37.3 MPa (373 bar)
• Working Mode: 2-speed automatic/manual shift
• Brake Structure: Hydraulic release, spring applied static parking brake
• Connection: Matches original two-stage planetary reduction gearbox input spline
• Rotation Direction: Standard OEM direction matching machine chassis configuration

4. Compatibility & Cross Reference List

Direct Fit Models

Interchangeable Part Numbers

5. BELPARTS Competitive Advantages

• Over 13 years specialized in travel motors & final drive assemblies for 39–45 ton Komatsu heavy excavators
• Three quality grades optional: genuine Komatsu original motor, fully rebuilt motor with all wear parts renewed, cost-effective high-precision aftermarket replacement
• Strict pre-delivery QC: pressure test, leakage check, brake performance and speed shift function verification
• Adequate inventory stored in Guangzhou warehouse, flexible sea freight & air freight global shipping solutions
• Professional engineering team provides installation guidance, troubleshooting and long-term technical after-sales support
• Economical maintenance solution vs purchasing complete whole final drive assembly

6. FAQ

Q1: What is the difference between this item and a complete final drive?

Q2: Are 706-8J-01411 and 706-8J-01421 interchangeable?

Q3: What is the difference between Rebuilt and Genuine New travel motor?

Q4: What is your delivery lead time?