708-8H-00270 Traveling Device for Komatsu PC300-6 PC340-6K PC350-6 | High

These excavator platforms operate in demanding conditions worldwide, and our traveling devices are configured for region-specific operational challenges:

• North America & Europe: Upgraded with reinforced planetary carriers and oversized taper roller bearings to handle continuous high-load cycles in heavy demolition, quarry loading, and infrastructure construction projects requiring extended travel cycling
• Southeast Asia & Oceania: Equipped with heavy-duty Duo-Cone floating seals and corrosion-resistant hardware to prevent contamination from abrasive volcanic soils, monsoon mud, and coastal salt spray in marine construction and land reclamation applications
• Middle East & South America: Enhanced thermal management through optimized oil circulation galleries and enlarged heat dissipation surfaces on the motor housing, maintaining stable operating temperatures during extended operation in open-pit mines and desert environments exceeding 50°C ambient temperature

• High-Capacity Torque Delivery: Dual-stage planetary gearset with optimized reduction ratios delivers maximum tractive effort for steep grade climbing and soft terrain navigation while maintaining productive travel speeds for daily production cycling between excavation zones
• Cross-Model Compatibility: Engineered to fit PC300-6, PC340-6K, and PC350-6 undercarriage configurations, providing a unified replacement solution for mixed fleet maintenance programs across different machine models and weight classes
• Fatigue-Resistant Construction: Induction-hardened sun gears, carburized planetary pinions, and heat-treated alloy steel housing resist pitting, spalling, and structural cracking under repetitive shock loading from rock excavation and heavy bucket penetration
• Direct OEM Fitment: All mounting bolt hole patterns, hydraulic port thread sizes (SAE O-ring boss and JIC 37° flare), and pilot line port orientations match original Komatsu specifications for seamless installation without undercarriage modifications

• Hydraulic System Care: Routinely monitor case drain line backpressure; sustained readings above 7 kg/cm² indicate internal motor wear requiring immediate teardown inspection. Replace hydraulic return filters every 250 operating hours and pilot circuit filters every 500 hours to minimize contaminant circulation through travel motor piston assemblies
• Gear Oil Management: Drain and replenish planetary gearbox oil every 500 operating hours under normal conditions, or every 250 hours in severe dust, high-humidity, or high-temperature environments. Use SAE 80W-90 API GL-5 mineral gear oil; avoid mixing with synthetic oils to prevent floating seal incompatibility
• Mounting Bolt Replacement Protocol: Always install new OEM-specification mounting bolts coated with medium-strength thread locker compound. Follow a four-stage cross-pattern tightening sequence at 25%, 50%, 75%, and 100% of specified torque to ensure uniform clamping force distribution and prevent housing distortion
• Pre-Start Priming Procedure: Before initial engine startup following traveling device installation, completely fill the travel motor housing with clean ISO VG 46 hydraulic oil through the uppermost port. Manually rotate the output shaft in both directions using a pry bar to displace trapped air pockets, then verify oil level before commencing operation to prevent dry-start damage to piston shoes, cylinder block, and valve plate surfaces

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.

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Professional Team

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.

Secure Product Packaging Example

• 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