Hitachi ZAX890‑5A Final Drive Travel Motor Assembly – Japanese Genuine (4688059 / HMG88EA018‑000668)

Description

Detail Information

Note: The application information provided is for reference only. Please confirm the part number and compare it with the old component before purchasing. If you have any questions, please feel free to contact us.
It is worth choosing a product that features stable performance, high reliability, easy installation, and quick response.

1. Key Features & Benefits

• Japanese genuine final drive – OEM part numbers 4688059, HMG88EA018‑000668, and HMG88ER series. Manufactured in Japan to Hitachi’s original specifications. This is a brand‑new, never‑used travel motor assembly – not remanufactured, not rebuilt, not salvaged.

• Direct fit for Hitachi ZAX890‑5A – Precision‑engineered for the 85‑metric‑ton ZAX890‑5A, ZX890LCH‑5A, ZX870‑5A, ZX870LC‑5A, and ZX890H‑5A excavators. Mounting flange dimensions, bolt patterns, sprocket interface, and hydraulic port locations match the factory original exactly – no modifications, no adapters, no guesswork.

• High‑torque swashplate axial piston motor – The HMG88EA integrates a variable‑displacement axial piston hydraulic motor with a multi‑stage planetary gearbox. Delivers smooth, progressive travel power even under extreme digging loads and steep slopes.

• Two‑speed travel capability – Fully supports the machine’s two‑speed travel system. High speed (up to 4.6 km/h) for rapid site repositioning; low speed (up to 3.1 km/h) for high‑torque crawling during tough digging, pushing, or climbing. Automatic shift logic matches original machine behaviour.

• Integrated spring‑applied parking brake – Wet multi‑disc brake engages automatically when travel controls return to neutral, holding the 85‑ton machine securely on slopes. Brake releases instantly when a travel command is given – no drift, no creep.

• Premium duo‑cone floating seals – Japanese‑spec floating seals (duo‑cone type) prevent cross‑contamination between the hydraulic motor section and the planetary gearbox. These seals keep abrasive dust, water, and debris out while retaining gear oil – the single most important factor for final drive longevity.

• Heavy‑duty planetary geartrain – Precision‑ground, case‑hardened alloy steel gears (sun, planet, and ring) designed for high shock load resistance in mining and quarry applications. The cast iron housing is dimensioned to withstand the full weight and impact forces of an 85‑ton excavator.

• Plug‑and‑play replacement – Your mechanic unbolts the failed unit and bolts this one in. No special tools, no programming, no calibration. All hydraulic port thread sizes and sealing configurations match the original.

• Pre‑shipment visual verification – We send you detailed high‑resolution photographs of the actual unit – mounting flange, splines, port threads, casting marks, and overall condition. You approve shipment; we never ship blind.

• Fast delivery – 5–8 working days lead time from our Guangzhou warehouse. Monthly supply capacity of 300 units, available for single or bulk orders.

2. Applications

The Hitachi ZAX890‑5A equipped with the HMG88EA final drive is an 85‑ton workhorse deployed in the most demanding heavy industries. A genuine Japanese travel motor ensures reliable mobility and maximum uptime.

• Large‑scale open‑pit mining – In copper, gold, iron ore, and coal mines, 85‑ton excavators work 20+ hour shifts. The final drive endures extreme shock loads, abrasive dust, and continuous high torque. A genuine Japanese unit delivers the durability needed to keep production moving – and a spare on the shelf turns a week of downtime into a single‑shift repair.

• Heavy construction & earthmoving – Dam construction, highway cuts, bridge abutments, and large‑scale site preparation demand consistent track mobility. A final drive failure in the middle of a major project stops production completely, and towing an 85‑ton machine requires specialized heavy recovery equipment. A new, genuine final drive eliminates the guesswork of used or remanufactured components.

• Quarrying & aggregates – Granite, limestone, and basalt quarries subject the undercarriage to severe vibration and impact. The HMG88EA’s case‑hardened planetary gears and duo‑cone floating seals are specifically designed to keep abrasive dust out of the gearbox.

• Oil sands & heavy overburden – Extreme traction conditions in oil sands mining require reliable two‑speed travel. The integrated wet disc brake holds the machine on steep spoil pile slopes even with a fully loaded bucket.

• Forestry & land clearing – Steep grades, soft ground, and hidden obstacles are routine. The final drive’s low‑speed, high‑torque capability pulls the machine through mud and over fallen timber while the parking brake secures it on inclines.

• Equipment rental fleet maintenance – Large rental fleets operating 80‑90 ton machines need predictable component life. A genuine Japanese final drive provides a known service life (8,000–10,000 hours), allowing proactive replacement before failure – avoiding costly emergency repairs, recovery bills, and lost rental revenue.

3. Why Choose Hongtengda Parts – Genuine Japanese Stock, Ready to Ship

At Hongtengda Parts, we have been supplying genuine and remanufactured undercarriage components for excavators since 2001. We know that a final drive failure on an 85‑ton machine is not just a parts problem – it is a production‑stopping event. Our approach focuses on what matters to you: authenticity, transparency, and speed.

• 25+ years of industry experience – Founded in 2001, we have sourced genuine Japanese final drives for Hitachi, Caterpillar, Komatsu, Kobelco, Hyundai, SANY, XCMG and more than fifteen other brands. We maintain direct sourcing relationships with Japanese supply chains – no middlemen, no questionable counterfeits.

• New genuine stock, not reman – The HMG88EA final drive is a new, genuine Japanese component. No remanufactured units with unknown histories. No “rebuilt” cores with new paint. You receive a factory‑fresh final drive, ready to install.

• 90% stock availability – Hitachi ZAX890‑5A final drive travel motor assemblies are in stock and ready for immediate dispatch from our Guangzhou warehouse. We are not a drop‑shipper – the unit you order is physically on our shelf, inspected, and ready to go.

• 24‑hour shipment – From our Guangzhou hub to your forwarder in 1 day. International orders are shipped within 24 hours via sea, air, or express courier (DHL, FedEx, UPS, TNT). Most customers receive their final drive within one week.

• Pre‑shipment visual verification – We never ship a final drive blind. Before packing, we take clear, high‑resolution photographs of your actual unit – mounting flange, splines, port threads, casting markings, and general condition. You approve shipment – we do not ship without your confirmation.

• Professional export packaging – Each final drive is packed in a heavy‑duty, fumigation‑free wooden case with internal foam padding and corner bracing. Your unit arrives undamaged whether shipped by air freight or in the lower deck of a container ship.

• One‑stop sourcing for Hitachi undercarriage parts – Beyond final drives, we supply complete undercarriage components (track chains, sprockets, track rollers, idlers, track shoes), hydraulic pumps (K5V series), swing motors, control valves, engine parts, and full rebuild kits for Hitachi EX and ZX series excavators.

• Technical support before you buy – Not sure if this final drive fits your specific machine variant? Send us your machine serial number and a photo of the old final drive. Our workshop team will confirm compatibility, check bolt patterns, and verify port configurations within 2 hours.

• After‑sales technical assistance – After you receive your final drive, our support continues. If you have questions about installation, torque specifications, case drain line routing, or brake bleeding, our engineers are available via email and messaging.

Send us your Hitachi ZAX890‑5A machine serial number and a photo of the old final drive – we will confirm compatibility, provide a firm quote, and document our pre‑shipment inspection for your approval within 24 hours.