706-8J-01012 Travel Motor for KOMATSU PC300-7 PC400-7 PC400-7E0 PC400LC-8 PC400-8 PC450-7 PC450-7E0 PC450-8 PC550LC-8 Excavator

Hydraulic Track Drive Motor | BELPARTS Heavy Excavator Undercarriage Spare Parts

• Product Definition: Independent travel hydraulic motor head only (without planetary reduction gearbox), used for overhaul replacement, reuse intact original gearbox to cut maintenance cost
• Main OEM Part Number: 706-8J-01012
• Full Cross Interchange Part Numbers:

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

• Compatible 30~55 Ton Heavy Excavator Models:

  Komatsu PC300-7

  Komatsu PC400-7, PC400-7E0, PC400LC-8, PC400-8

  Komatsu PC450-7, PC450-7E0, PC450-8

  Komatsu PC550LC-8

  Also universal fit for PC490-10, PC490LC-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
• Approx. Net Weight: 98 kg
• Stock Status: In stock, shipped out within 3–7 working days after order confirmation

• Manufactured strictly per Komatsu OEM drawing, perfectly matched hydraulic system configuration of PC300/PC400/PC450/PC550 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 digging
• 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 switching
• Direct bolt-on replacement: identical mounting hole layout, oil port position and input spline size, no cutting, welding or machining modification required during field installation
• Hardened piston, cylinder block and valve plate internal components, high-pressure resistant housing and upgraded sealing structure, anti-leakage performance for long-cycle mining & bulk earthworking harsh conditions
• Every finished unit passes strict bench test: pressure calibration, internal leakage inspection, brake function verification and two-speed shifting test before delivery; ISO9001 & CE certified

• Type: Variable Displacement Axial Piston Travel Motor (Motor Head Only, Excluding Reducer)
• 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
• Connection Interface: Input spline matches original two-stage planetary reduction gearbox
• Rotation Direction: Standard OEM direction matching machine chassis requirement

PC300-7, PC400-7, PC400-7E0, PC400LC-8, PC400-8, PC450-7, PC450-7E0, PC450-8, PC550LC-8

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

PC490-10, PC490LC-10

• Over 13 years specialized in travel motors & final drives for 30–55 ton Komatsu heavy mining excavators
• Three quality grades to satisfy different budget and working condition demands
• Rigorous incoming & outgoing QC inspection system to guarantee stable long-term performance
• Sufficient inventory stored in Guangzhou warehouse, flexible sea freight & air freight global shipping solutions
• Professional technical team supplies installation guidance, fault troubleshooting and long-term after-sales support
• Cost-saving maintenance solution compared with purchasing complete expensive full final drive assembly

A: Yes, they are superseded upgraded OEM part numbers for identical travel motor unit, fully interchangeable replacement for all listed excavator models.

A: This product is only travel motor head (without reduction gearbox); complete final drive integrates motor + planetary reducer together. It is used to repair the existing undamaged gearbox assembly to save repair cost.

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

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