ناقل الحركة النهائي 9263594 لـ حفارة Hitachi ZX470-5G ZX470-5B ZX470LC-5G ZX470LC-5B ZX470LCH-5G ZX470

Genuine & Refurbished Integrated Final Drive Travel Motor Assembly with Gearbox for Hitachi ZX470-5G ZX470-5B ZX470LC-5G ZX470LC-5B ZX470LCH-5G ZX470 Large Excavator

1. OEM Part Number & Machine Compatibility
Original travel motor model: Hitachi HMGC70 heavy-duty two-speed integrated final drive (hydraulic travel motor + 3-stage reinforced planetary reduction gearbox)
Hitachi OEM interchange part numbers: 9298565, 4638892, PG200886
Fully compatible large excavator models: Hitachi ZX470, ZX470-5B, ZX470-5G, ZX470LC-5B, ZX470LC-5G, ZX470LCH-5G
All listed OEM codes are supersession interchangeable versions, identical heavy-duty mounting flange, sprocket hub interface, hydraulic A/B feed and drain port layout; genuine and refurbished versions share unified installation dimensions, direct bolt-on replacement without track frame or pipeline modification

2. Core Technical Specifications
Structure type: Two-speed variable displacement hydraulic travel motor (Stage 1: Low Speed High Torque / Second Stage: High-Speed Travel) + three-stage thickened planetary reduction gear reducer
Dual motor displacement: 78 / 122 cm³/rev
Total gear reduction ratio: 40
Second Stage Specified High-Speed Travel Parameters
Rated working pressure (second stage): 34.3 MPa
Maximum relief pressure (second stage): 36.0 MPa
Rated operating speed (second stage): 2600 rpm
Corresponding rated input power (second stage): 72.4 kW
Max output climbing torque: 38600 N·m
Dual travel speed range: 24~42 rpm, perfectly matched to factory hydraulic system of 47-ton Hitachi heavy excavator platform
Mounting PCD, reinforced sprocket tooth size, oil port position strictly conform to Hitachi OEM dimensional drawings
Gearbox & motor casing adopt thickened high-strength ductile iron; internal pistons, valve plates, oversized planetary gears, carrier and heavy load bearings use quenched wear-resistant alloy steel to withstand long-term mining and heavy construction operations

3. Internal Structure & Functional Introduction
Dual-displacement travel motor supports two working modes: Stage 1 low-speed high torque for muddy terrain, steep slope climbing, rock breaking and heavy material loading; Second-stage high-speed mode for flat ground fast transfer
Equipped with large multi-disc spring-applied hydraulic release mechanical parking brake, reliable locking performance on steep slopes to prevent track sliding
Three-stage reinforced planetary gear set amplifies hydraulic torque significantly to drive heavy track sprocket, stable continuous power output under long-time heavy digging loads
Built-in anti-cavitation valve and dual shock relief valve to buffer violent hydraulic pressure surges, effectively protect internal core components from impact damage during composite actions
Heavy-duty integrated final drive structure perfectly fits the reinforced track frame space of all ZX470 5 series excavator variants

4. Product Advantages
Two quality options available: Genuine Original and Fully Refurbished units, both with 1:1 OEM casting dimensions, plug-and-play installation without cutting or modifying hydraulic pipelines and mounting brackets
All finished final drives pass full hydraulic bench inspection before shipment, including two-speed switching test, high-pressure stability test, internal leakage detection and heavy-load brake holding torque verification
Complete overhaul spare parts in stock: heavy-duty floating seal, piston shoe assemblies, swash plate, valve plate, thickened planetary gear sets, carrier, oversized bearings and full seal repair kits for separate component replacement during maintenance
Unified assembly fits six machine variants, greatly simplifying spare part ordering, stock classification and inventory management for mining machinery dealers and large repair workshops
Different warranty terms for different grades: Genuine original with 12-month warranty; fully refurbished units with 6-month warranty, stable performance meeting construction and mining operation demands

5. Packaging & Global Delivery Details
Motor oil ports and large output spline shaft coated with anti-rust grease and sealed with dust-proof protective plugs
Entire heavy final drive wrapped with thick moisture-proof plastic film and fixed inside reinforced export solid wooden crate with steel reinforcing strips to avoid collision and damp corrosion during long-distance sea or air transportation
In-stock genuine and refurbished units can be dispatched within 3–5 working days after order confirmation
Multiple global shipping solutions available: international air express, sea LCL/FCL bulk shipment, overland truck transport for Southeast Asia, North America and global mining markets

6. FAQ
Q: Are all OEM part numbers mutually interchangeable for all ZX470 5 series models?
A: Yes, 9298565, 4638892 and PG200886 are iterative replacement codes for the same HMGC70 final drive assembly, fully cross-replaceable for all listed Hitachi ZX470 5 series excavators.
Q: Can genuine and refurbished final drives be installed directly on all ZX470 variants?
A: Yes, both genuine and refurbished versions adopt unified OEM mounting size and factory-calibrated hydraulic parameters, direct bolt-on fitting without extra adjustment or modification work.
Q: What is the relation between HMGC70 and Hitachi OEM part numbers?
A: HMGC70 is Hitachi’s original travel motor model designation, while 9298565, 4638892 and PG200886 are exclusive OEM part numbers assigned by Hitachi for this complete heavy-duty final drive assembly.
Q: Are individual overhaul spare parts available for this final drive?
A: Matching full overhaul seal kits, piston shoe assemblies, valve plates, swash plates, reinforced planetary gear carriers and heavy-duty floating seal spare parts are all available for partial overhaul and single component replacement work.