Views: 0 Author: Site Editor Publish Time: 2026-06-24 Origin: Site
Quick answer:
Choosing the right Hitachi final drive starts with matching your machine model and part number. For a Hitachi ZX280-3, the travel device carries part number 9255880/9256990 with stock code 9202148. Always confirm the part number, sprocket bolt count, and whether your unit ships with or without the motor before ordering.
A worn or failing final drive can bring an entire excavator to a standstill. Whether you run a single Hitachi EX120-5 or manage a mixed fleet of ZAXIS machines, knowing how to identify and source the correct replacement saves you costly downtime. This guide walks you through the steps to find the right component, decode part numbers, and avoid the most common ordering mistakes.
By the end, you'll know exactly what information to gather, how to read a parts table, and when to choose an assembly versus individual spare parts.
The final drive is the gearbox that turns hydraulic power into the torque that moves your tracks. Mounted inside the undercarriage, it sits between the travel motor and the sprocket. Planetary gears inside the unit multiply torque and reduce speed, giving your machine the pulling force it needs to climb, dig, and reposition.
On Hitachi machines, this component often appears in parts catalogs as a "travel device" or "travel reduction gearbox." Some units include the hydraulic motor, while others ship as the gearbox only, with the motor shaft and motor housing already installed. That distinction matters a lot when you order.
Hongxiang Machinery, founded in 2000, manufactures these gearboxes in an 18,000 m² factory and produces every component in-house. The company covers more than 600 construction machinery models with over 12,000 parts, so compatibility across Hitachi's EX and ZAXIS lines is well documented.
Part numbers are the single most reliable way to match a replacement. Hitachi assigns both a manufacturer part number and a stock code to each travel device. Mixing these up is the top cause of wrong orders.
Here's a quick reference for several popular Hitachi models based on Hongxiang's catalog:
Excavator Model | Part No. | Stock Code | Ships With Motor? |
|---|---|---|---|
EX150LC-5 | 4389722 | 9209506 | No |
EX120-5 | 9134824 / 9148908 | 9202115 | No |
ZX120 | 9180731 / 9181123 | 9202118 | No |
ZX280-3 / ZX280-5G | 9255880 / 9256990 | 9202148 | No |
ZX330 / ZAXIS330 | 9212584 / 9232360 | — | No |
EX400-3 | 9098390 / 9132608 | 9202160 | No |
When you contact a supplier, provide the part number, part name, machine model, and quantity. This is the exact information Hongxiang requests to quote accurately, and it removes guesswork from the process.
This decision comes down to the condition of your unit and your repair capability.
Choose a complete travel reduction gearbox if the housing, carriers, or multiple gears are damaged. A full assembly arrives ready to install, already fitted with the motor shaft and motor housing. This is the faster route back to work and the better choice if you don't have a skilled technician on site.
Choose individual spare parts if only one or two components have failed. Hongxiang stocks planetary gears, sun gears, carriers, needle bearings, thrust plates, seal kits, and floating seal groups separately. For example, the EX150LC-5 unit breaks down into more than 30 individual positions, including a seal kit (part 4402987) and planetary gears (part 0693004). If your gearbox is otherwise sound, replacing a seal kit costs far less than a full unit.
A practical rule: if the repair touches three or more major components, the assembly usually delivers better value and reliability.
The undercarriage isn't the only place these gearboxes matter. The upper structure relies on a separate drivetrain to rotate the cab and boom. The excavator swing drive handles this rotation, and it's just as critical to smooth operation as the travel system.
Inside that assembly, the swing motor converts hydraulic flow into rotational force, while the swing reduction gearbox steps down the speed and boosts torque. Hitachi machines from the EX series through the ZAXIS line each use specific swing components, so the same part-number discipline applies here. Match the model first, confirm the part number second.
A few habits prevent most returns and delays:
Confirm motor inclusion. Many Hitachi travel devices ship without the motor. Check this before you order so you don't end up missing a critical piece.
Count your sprocket bolts. Bolt patterns and counts vary between model generations, even when the rest of the unit looks identical.
Verify the model suffix. A ZX280-3 and a ZX280-5G may share part numbers, but small revisions exist across the range. The suffix tells the full story.
Check warranty terms. Hongxiang offers a 1,000-working-hour warranty on travel devices, valid from the date of arrival. Inspect your shipment against the order list as soon as it lands.
Sourcing the right gearbox doesn't have to be a gamble. Start by pulling your machine's model number and the part number stamped on the existing unit. Match those against a supplier's catalog, confirm whether you need the motor, and decide between a full assembly or individual spares.
For Hitachi owners, Hongxiang Machinery offers components across the EX and ZAXIS ranges, backed by 26 years of manufacturing experience and worldwide shipping by sea, air, or carrier. Gather your part details, request a quote, and get your machine back to work.
How long is the warranty on a Hitachi travel device?
Hongxiang provides a 1,000-working-hour warranty on its travel reduction gearboxes, counted from the date of arrival. The warranty does not cover damage from wrong orders, incorrect installation, overloading, rust, or natural disasters.
How fast can I get a replacement gearbox?
If the item is in stock, processing and packing take 4 to 7 days. Bulk production runs 10 to 35 days depending on quantity. Shipping is available worldwide by sea, air, or carrier.
Does a Hitachi final drive come with the hydraulic motor?
Often it does not. Many Hitachi travel devices ship as the gearbox only, with the motor shaft and motor housing pre-installed but no motor. Always confirm motor inclusion before you place your order.
What is the difference between a part number and a stock code?
The part number is the manufacturer's reference for the component, while the stock code is an internal catalog identifier. For example, the ZX280-3 unit has part numbers 9255880/9256990 and stock code 9202148. Supply the part number when ordering.
Can one gearbox fit multiple Hitachi models?
Yes. Several units cover more than one model. The 9255880/9256990 travel device fits the ZX280-5G, ZAXIS280-5G, ZX280-3, and ZAXIS280LC-3. Always verify against your specific model and suffix.
