9255880 9256990 transmisión final para Hitachi ZX280LC-5 ZX280-5 excavadora midi

ZX280LC‑5 ZX280‑5 Final Drive for Excavator spare parts 9255880 9256990 Axial Piston Motor OEM

Product Overview

The ZX280LC‑5 and ZX280‑5 sit between Hitachi's 20‑ton and 30‑ton classes — a 28‑ton platform chosen for mass excavation, quarry face work and large site grading where extra lifting capacity matters. Under each track frame sits the axial piston motor and planetary reducer, covered by references 9255880 and 9256990, that takes high‑pressure oil from the main pump and trades speed for the low‑speed torque dragging the machine across rutted, broken ground.

On a worked ‑5 series Hitachi, drive wear is felt across the whole operation. One track lags on the ramp climb, the track shell runs warm after a shorter run than it should, and a deepening note comes through the floor plates under load. Waiting until a track actually slips is waiting for the piston block to shed swarf into the oil. This OEM‑grade unit reproduces the original motor‑and‑reducer pairing as one sealed, bench‑tested assembly, covering both the LC and standard undercarriage, so the worn drive lifts out whole and the replacement drops straight in.

Core Advantages

1. One range covers both undercarriage lengths
The 9255880 and 9256990 references cover the LC long‑undercarriage and standard ZX280‑5 builds, so workshops running a mixed Hitachi fleet keep one range on the shelf rather than two.

2. Torque to pull a 28‑ton frame up ramps
Hardened gear stages multiply motor output down to sprocket speed, so the track digs in rather than spinning on muddy climbs. No laboured, whirring travel under a full bucket.

3. A lapped piston group that holds pressure
The cylinder block, piston shoes and valve plate are finished to close clearance, so oil pressure does not bleed internally. Both tracks pull in step — no wander on the haul road, no lazy side.

4. Sealed for quarry dust and standing water
Heavy Hitachi machines work through long shifts in dust, mud and water. Fresh shaft and housing seals keep grit out of the lube — the line between a drive that lasts and one that fails early.

5. OEM‑spec quality without the dealer price
Renewing the drive to original tolerances restores the ZX280's mobility at a fraction of a Hitachi dealer exchange unit, with sample and bulk supply for workshops keeping several of these machines 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 tell the LC and standard undercarriage apart?
A: The LC has a longer track frame and wider shoe spacing. If unsure, send a side photo and the serial number — we will confirm which you have.

Q2: Which reference suits my machine?
A: Read the tag on your existing drive against 9255880 or 9256990 and send the machine serial number. The references cover the LC and standard builds, so we confirm the correct unit before dispatch.

Q3: What break‑in should the operator follow?
A: Take the first shift easy on loaded ramps. Light cycling seats the new gears and seals, then check oil level and fitting torque after the first day.

Q4: How does this compare to a genuine Hitachi unit?
A: It is built to the same interface and internal tolerances as a replacement, at aftermarket pricing. It will not carry a Hitachi badge, and it does not require a dealer network to fit or service.

Q5: Do you offer bulk pricing for a fleet?
A: Yes — workshops and fleets ordering multiple units get tiered pricing. Tell us how many drives you need over the year and we will quote a bulk rate.