미디 굴삭기 Hitachi EX200-2용 최종 구동장치 Hitachi HMGF35 9116393

EX200‑2 Final Drive for Hitachi Excavator spare parts 9116393 HMGF35 Axial Piston Motor OEM

Product Overview

The Hitachi EX200‑2 sits between the original EX200 and the later ‑3 — an early 20‑ton machine that helped define its class, and one that owners still keep working because it is simple to fix and built to last. Under each track sits the HMGF35 axial piston motor and planetary reducer, carrying reference 9116393: the unit that turns hydraulic flow into the slow, powerful rotation pulling the machine across site. On a legacy machine this age, drive wear arrives in small increments rather than all at once. The two tracks stop quite matching, the machine drifts across level ground, the drive housing warms after a longer run, and a note from inside the track frame gradually deepens. Ignore it and a track will eventually hesitate under load — by then the piston group and gears are already scoring. This OEM‑grade drive reproduces the original HMGF35 motor‑and‑reducer pairing as one sealed, tested assembly, so the worn unit comes off and the new one bolts straight back on.

Core Advantage

1. OEM‑grade internal clearances for a machine with built‑up wear
An older excavator's valves and lines carry years of use. A drive finished to OEM tolerances holds its pressure and flow rather than amplifying that wear — the result is stable track pull, not a short‑lived performance spike.

2. Hardened gears built for decades‑proven duty
The HMGF35 planetary set follows a long‑proven Hitachi layout, with case‑hardened teeth that share the drive load evenly. Meshing stays smooth and quiet, and wear from years of track push slows right down.

3. Sealed for quarry dust and standing water
Legacy EX machines work through long hours in the harshest site conditions. Fitted output‑shaft and housing seals keep grit out of the motor and reducer — the protection that decides whether the drive lasts its service life.

4. One tested, matched unit for a clean swap
Motor and reducer arrive pre‑assembled and bench‑checked, so the fitter removes the old drive and bolts on the new one without sourcing separate components. No mid‑job mismatches, no second visit to chase a leak.

5. OEM‑spec quality without the dealer price tag
Renewing the drive to OEM grade restores the EX200‑2's mobility far below the cost of an original exchange unit, with sample and batch supply for workshops keeping these legacy Hitachis on the books.

Manufacturing & Quality Control

The OEM‑grade route follows controlled specifications: material certification, precision machining of housings and gears, case hardening of wear surfaces and clean assembly. Each completed drive runs on a test rig to verify output torque, internal leakage and running noise before release, and only passing units are packed. Full preservation coating, moisture sealing and shock‑absorbing export casing protect the assembly during transport.

Frequently Asked Questions

Q1: How do I confirm 9116393 matches my EX200‑2?
A: Compare the reference on your existing drive and share your machine serial number. Early Hitachi build variants can differ, so we verify before dispatch.

Q2: Is this the complete motor and reducer?
A: Yes — the listing covers the full axial piston motor and planetary reducer as one assembly, ready to bolt on. Separate components can be checked on request.

Q3: What faults point to drive wear?
A: Uneven track speed, drifting on flat ground, a hot or noisy track motor and tracks that hesitate under load. Inspect early, before debris spreads through the travel circuit.

Q4: What is the warranty position?
A: Manufacturing and material defects are covered. Damage from contaminated oil, debris in the motor, track obstruction, overload or incorrect installation is excluded; follow the Hitachi service manual for fitting and bleeding.