706-8J-01411 706-8J-01421 Travel Motor for KOMATSU PC450-7 PC450LC-7 PC450-8

Hydraulic Track Drive Motor | For PC450-7 / PC450LC-7 / PC450-8 / PC450LC-8 / PC490-10 / PC490LC-10 | BELPARTS Heavy Excavator Undercarriage Spare Parts

• Part Definition: Independent travel hydraulic motor head only (without planetary reduction gearbox), used for repairing existing intact final drive gearbox assembly
• Full OEM Interchange Part Numbers:

  Main codes: 706-8J-01411, 706-8J-01421, 706-8J-01030, 706-8J-01012

  Alternate superseded PN: 706-8J-01011, 706-8J-01020

• Compatible 45–49 Ton Heavy Excavator Models:

  Komatsu PC450-7, PC450LC-7

  Komatsu PC450-8, PC450LC-8

  Komatsu PC490-10, PC490LC-10

  Also universal fit for PC400-7, PC400LC-7, PC400-8, PC400LC-8, PC390LC-10

• 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 motors; 6–12 months for aftermarket units
• Net Weight: Approx. 98 kg
• Stock Status: In stock, shipped out within 3–7 working days after order confirmation

• Original Komatsu variable displacement piston travel motor design, perfectly matched to hydraulic system of PC450-7/-8 & PC490-10 series heavy excavators
• Built-in two-speed shifting valve: high-speed mode for site relocation, low-speed high-torque mode for climbing, muddy terrain and heavy-load excavation work
• Integrated spring-applied hydraulic-release multi-disc parking brake + built-in counterbalance valve, prevents track slipping on slopes and eliminates hydraulic impact during forward/reverse direction switching
• Separate motor head structure for economical maintenance: replace only failed motor while reusing original good reduction gearbox, greatly cutting repair cost
• Exact OEM port layout, mounting bolt pattern, internal input spline and valve preset pressure; direct bolt-on replacement with no cutting, machining or modification required
• Hardened piston, valve plate and cylinder block, high-pressure resistant housing and upgraded sealing assembly, anti-leakage design for long-cycle mining & bulk earthmoving harsh working conditions
• Every finished unit passes full pressure testing, internal leakage inspection, brake function test and two-speed shift calibration before delivery; ISO9001 & CE certified

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

Direct Fit Target Models

PC450-7, PC450LC-7, PC450-8, PC450LC-8, PC490-10, PC490LC-10

Full Interchangeable Part Numbers

706-8J-01411, 706-8J-01421, 706-8J-01030, 706-8J-01012, 706-8J-01011, 706-8J-01020

Extended Compatible Models

PC400-7, PC400LC-7, PC400-8, PC400LC-8, PC390LC-10

• Over 13 years specialized in travel motors & final drive assemblies for 39–50 ton Komatsu heavy mining excavators
• Three quality grades optional: genuine Komatsu original motor, fully rebuilt motor with all internal consumable wear parts renewed, cost-effective high-precision aftermarket replacement
• Strict pre-delivery QC process: hydraulic pressure calibration, internal leakage inspection, brake performance verification and two-speed shift function testing
• Sufficient inventory stored in Guangzhou warehouse, flexible sea freight & air freight global shipping solutions
• Professional engineering team provides installation guidance, fault troubleshooting and long-term technical after-sales support
• Cost-saving maintenance solution compared with purchasing complete whole final drive assembly

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

A: This product is travel motor head only (excluding planetary reduction gearbox); a full final drive integrates motor + reduction gearbox together. This motor is used for overhaul repair of existing undamaged gearbox assemblies.

Q2: Are these four part numbers fully interchangeable?

A: Yes, 706-8J-01411, 706-8J-01421, 706-8J-01030, 706-8J-01012 are superseded upgraded OEM part numbers for identical travel motor unit, fully interchangeable replacement for all listed excavator models.

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

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

Q4: What is your delivery lead time?

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