9203565 final drive for John Deere 450D LC 450 excavator
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1. OEM Part Number & Machine Compatibility
Original travel motor model: Nachi PHV-3B-50P two-speed integrated final drive (hydraulic motor + two-stage planetary reduction gearbox)
John Deere OEM interchange part numbers: 9263595, 4637796, PG200030
Fully compatible compact excavator model: John Deere 450D LC
All three serial numbers are iterative supersession upgrade codes, identical mounting flange bolt pattern, sprocket hub interface, hydraulic A/B feed & drain port layout, fully cross-replaceable direct bolt-on aftermarket replacement without frame or pipe 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) + two-stage planetary reduction gear reducer
Motor displacement: 26.3 / 42 cm³/rev dual displacement design
Total gear reduction ratio: 49
Second Stage Specified High-Speed Travel Parameters
Rated working pressure (second stage): 27.0 MPa
Maximum relief pressure (second stage): 30.5 MPa
Rated operating speed (second stage): 3600 rpm
Corresponding rated input power (second stage): 24.8 kW
Max output climbing torque: 11800 N·m
Dual travel speed range: 34~56 rpm, perfectly matched to factory hydraulic system of 4.5-ton John Deere compact excavator platform
Mounting PCD, sprocket tooth size, oil port position strictly conform to John Deere OEM dimensional drawings
Gearbox & motor casing adopt high-strength ductile iron; internal pistons, valve plates, planetary gears, carrier and bearings use quenched wear-resistant alloy steel for long heavy-load service life
3. Internal Structure & Functional Introduction
Dual-displacement travel motor provides two working modes: Stage 1 low-speed high torque for muddy ground, slope climbing and heavy excavation; Second-stage high-speed mode for flat ground fast transfer
Built-in multi-disc spring-applied hydraulic release mechanical parking brake, stable holding performance on steep slopes to prevent sliding
Two-stage planetary reduction gear set amplifies hydraulic motor torque to drive track sprocket, stable continuous power output under long digging loads
Integrated built-in anti-cavitation valve and shock relief valve to absorb hydraulic pressure surges, effectively protect motor core components from impact damage
Compact integrated final drive layout fits perfectly inside the narrow track frame space of JD450D LC mini excavator
4. Product Advantages
Standard aftermarket replacement, 1:1 OEM casting outer dimensions, plug-and-play installation, no cutting or reworking of hydraulic pipelines, track frame or mounting brackets
Every finished aftermarket final drive passes full hydraulic bench inspection before shipment, including two-speed switching test, pressure stability, internal leakage test and brake holding torque verification
Complete overhaul spare parts in stock: floating seal, piston shoe assemblies, swash plate, valve plate, planetary gear sets, carrier, bearings and full seal repair kits for independent component replacement during maintenance
Three interchangeable OEM numbers correspond to one machine model, simplify spare part ordering, stock classification and inventory management for machinery dealers and repair shops
Standard 12-month full warranty for aftermarket unit, stable performance matching genuine original Nachi travel motor assembly
5. Packaging & Global Delivery Details
Motor oil ports and output spline shaft coated with anti-rust grease and sealed with dust-proof protective plugs
Whole final drive wrapped with moisture-proof plastic film and fixed inside export-grade solid wooden crate to avoid collision and damp corrosion during long-distance sea or air transportation
In-stock aftermarket 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 Asian & North American markets
6. FAQ
Q: Are 9263595, 4637796, PG200030 mutually interchangeable?
A: Yes, all three part numbers are upgraded replacement codes for the same Nachi PHV-3B-50P final drive assembly, fully cross-replaceable for John Deere 450D LC.
Q: Can this travel motor install directly on John Deere 450D LC?
A: Yes, unified mounting size and factory-matched two-speed hydraulic calibration enable direct bolt-on fitting without extra adjustment or modification work.
Q: What is the relation between PHV-3B-50P and these John Deere OEM part numbers?
A: PHV-3B-50P is the official Nachi original travel motor model designation, while 9263595, 4637796, PG200030 are exclusive OEM part numbers assigned by John Deere for this complete final drive assembly.
Q: Are separate repair spare parts available for this final drive?
A: Matching full overhaul seal kits, piston shoe assemblies, valve plates, swash plates, planetary gear carriers and independent floating seal spare parts are all available for partial overhaul and single component replacement work.