9289617 Fahrantrieb für Hitachi ZX135-3 Midibagger

ZX135‑3 Final Drive for Excavator spare parts 9289617 hydraulic motor reducer Aftermarket

Product Overview

The ZX135‑3 is Hitachi's short‑radius 13.5‑ton excavator — built for roadwork where overhang is a problem, for trenching along busy streets, and for any job where a full‑size 20‑ton machine would block the road. Under each track frame sits the hydraulic motor and planetary reducer, reference 9289617, that takes pump flow and turns it into the slow, steady pull moving the compact frame across uneven ground.

On a worked ZX135‑3, the drive wears down in ways that are easy to dismiss. The operator notices the two tracks no longer quite match on a flat stretch, that the track shell warms after a shorter trundle than it should, and that a faint whine creeps into the circuit under load. Most crews nurse it another week — but by then the piston group and reduction gears are already shedding swarf into the travel oil. This aftermarket unit reproduces the original motor‑and‑reducer pairing as one
sealed, bench‑run assembly, so the worn drive lifts out whole and the new one bolts straight in.

Core Advantages

1. Compact size, real pulling power
The short‑radius design means the drive has to deliver torque in a tight frame. A lapped piston block holds pressure internally, so both tracks pull in step even on narrow trenches.

2. Quiet gearing for street work
Roadwork sites sit beside homes and shops. Ground, hardened planetary teeth mesh with controlled backlash, keeping the drive quiet enough for neighbourhood work.

3. Sealed for dust, mud and pressure washing
Street sites throw up dust, slurry and washdown water. Fresh shaft and housing seals keep that grit out of the lube — the detail that decides whether the drive lasts or fails early.

4. One bolt‑in unit for a fast turnaround
Motor and reduction arrive mated and bench‑checked. The fitter swaps the whole drive rather than building it on the floor, which matters when a machine on a tight roadwork schedule is parked.

5. Aftermarket price for a well‑worked Zaxis
An OEM exchange drive carries a premium that is hard to justify on a worked ZX135‑3. This unit restores full track mobility at a fraction of that cost, with sample and bulk supply available.

Manufacturing & Quality Control

Parts are machined to Hitachi print, heat‑treated at wear points, and assembled in a clean shop. Each finished drive runs on a hydraulic stand while torque, leakage and noise are logged; units outside spec are reworked before packing. The internals are fogged with preservation oil, ports are plugged, and the assembly ships on shock‑absorbing dunnage.

Frequently Asked Questions

Q1: How do I confirm 9289617 matches my ZX135‑3?
A: Read the tag on your existing drive and send the machine serial number. Hitachi build variants can differ, so we cross‑check before dispatch.

Q2: Is this the same drive as the larger ZX200?
A: No — the ZX135 uses a smaller displacement motor than the 20‑ton class. The mounting and output are different, so they are not interchangeable.

Q3: What symptoms mean the drive is wearing out?
A: Mismatched track speeds, pulling to one side, a warm or noisy track motor, and tracks that hesitate under load. Catch it before swarf spreads through the travel circuit.

Q4: Can this be shipped by express courier?
A: Yes — compact drives like this ship well by air or express, which is often faster than sea freight for a single unit. Tell us the destination and we will quote the fastest option.

Q5: What is the warranty position?
A: Materials and build defects are covered. Damage from dirty oil, debris in the motor, track obstruction, overload or incorrect fitting is excluded. Photograph any arrival damage before uncrating.