Hitachi ZAX270-3 / ZAX280-5G / ZAX280LC-3 Swing Motor – (M5X180CHB-10A / 4621174)

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

• Genuine Kawasaki M5X180CHB swing motor – OEM part number 4621174, motor model M5X180CHB-10A. Manufactured by Kawasaki Precision Machinery (KPM), a world‑leading hydraulic component supplier and OEM partner to Hitachi. This is a brand‑new, factory‑spec unit – not remanufactured, not a generic substitute.

• Specifically engineered for Hitachi ZAX270‑3, ZAX280‑5G and ZAX280LC‑3 excavators – Designed for Hitachi ZAX270‑3, ZAX280‑5G, ZAX280LC‑3, as well as ZAXIS270‑3, ZX270‑3, ZX280‑3 and ZX330‑3 series excavators. This swing motor provides the rotational power for the upper structure, enabling the machine to dig, swing and position material efficiently.

• M5X180CHB series – Kawasaki’s proven swing motor platform – The M5X180CHB is an axial piston swing motor with a displacement of 180cc. It utilizes advanced hydraulic technology including axial piston design and variable displacement to optimize performance and energy efficiency. The motor integrates a built‑in gearbox for smooth, reliable torque delivery.

• High torque output for 27–28 ton class work – The Hitachi ZAX270‑3 delivers a swing speed of 12.6 rpm. The M5X180CHB motor is engineered to provide the torque and rotational power needed for fast, precise slewing operations, with a maximum working pressure capable of handling heavy loads with ease.

• Integrated relief and makeup valves for circuit protection – Features built‑in relief valves that protect the swing motor against pressure spikes during sudden stops or overloads. Makeup (anti‑cavitation) valves prevent vacuum damage during rapid deceleration. Together, these valves ensure smooth, jerk‑free slewing and extend motor life.

• Excellent speed and precision control – With a displacement of 180cc, the M5X180CHB motor offers excellent speed and precision control. Maximum speed is rated at 1,680 rpm, delivering responsive, predictable swing performance for precision grading, trenching and fine attachment control.

• Heavy‑duty construction for demanding conditions – Built with high‑strength materials and precision‑machined components to withstand the extreme shock loads, vibration and torsional stress generated during swing operations. Premium seals prevent contamination ingress and oil leakage, extending service life.

• Direct bolt‑on replacement – Mounting flange, shaft interface and hydraulic port configurations match the original Hitachi/Kawasaki specifications exactly. No modifications, no adapters – your mechanic unbolts the old motor and bolts this one in.

• Pre‑shipment visual verification – Before packing, we send you detailed high‑resolution photographs of the actual unit (mounting flange, splines, port threads, castings, 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‑piece or bulk orders.

2. Applications

The genuine Hitachi ZAX270‑3 / ZAX280‑5G swing motor is the power source for the slewing system on 27–28 ton class excavators used across a wide range of demanding job sites:

• Heavy construction & infrastructure – Highway excavation, dam building, bridge footings and large‑scale earthmoving projects. The swing motor’s high torque and smooth rotation enable precise positioning of the upper structure for efficient loading and digging cycles. The ZAX270‑3’s swing speed of 12.6 rpm ensures fast cycle times.

• Quarrying & aggregates – Loading trucks, stockpile management and material handling in granite, limestone and basalt quarries. The motor’s robust construction and sealed design withstand abrasive dust conditions, while the M5X180CHB platform provides consistent torque for precise bucket control.

• Mining support – Site cleanup, road maintenance, drainage works and equipment pad grading. The ZAX280‑5G features Hitachi’s HIOS III hydraulic system, which can reduce fuel consumption by 9% compared to conventional models, making it ideal for cost‑sensitive mining support operations.

• Demolition & scrap processing – Shock loads, vibration and sharp debris are routine in demolition yards and metal recycling facilities. The motor’s heavy‑duty construction and integrated relief valves absorb these extreme conditions without premature wear.

• Equipment rental fleet – 27–28 ton excavators are high‑value rental assets. A genuine new swing motor provides predictable service life and eliminates the gamble of remanufactured or used units – avoiding costly mid‑rental failures, towing bills and customer complaints.

• Forestry & land clearing – Steep slopes, fallen timber and uneven terrain demand reliable swing performance. The motor’s consistent torque delivery ensures smooth, controlled rotation even under varying load conditions.

3. About Hongtengda Parts

Since 2001, Hongtengda Parts has been a leading distributor of earthmoving machinery parts, serving customers across Southeast Asia, the Middle East, Africa, the Americas and Oceania. Headquartered in Guangzhou’s Zhucun parts hub – one of Asia’s major distribution centres for construction machinery parts – we combine deep inventory, cross‑brand knowledge and reliable global shipping to keep your machines running.

What you get when you order from us:

• 25 years of heavy equipment parts experience – Since 2001, we have been the go‑to supplier for repair shops, fleet owners and wholesalers worldwide. We know the Hitachi ZAX270‑3 and ZAX280‑5G platforms inside out – the different engine variants, hydraulic systems and production changes over the years.

• 90% of our catalog in stock – Your swing motor sits in our Guangzhou warehouse, not in a supplier’s backlog. From hydraulic components to undercarriage kits, most orders are dispatched within 24 hours on fumigated, export‑ready pallets.

• One supplier, all parts – Got a serial number, a model code, or just a photo of a worn‑out part? Our specialists cross‑reference across Hitachi, Caterpillar, Komatsu, Sany and 15+ brands to find what you need. OEM, OEM‑quality, or hard‑to‑find older model parts – we handle the search so you don’t have to.

• Own maintenance factory and technical team – Equipped with our own maintenance factory and a team of experienced technicians, we provide global customers with one‑stop solutions covering parts supply, technical support and equipment maintenance.

• Pre‑shipment verification – We never ship a swing motor blind. You receive clear photos of the actual unit before packing – you approve, we ship. When downtime costs money, we move at your speed.

• After‑sales support that works – Three senior technicians review your case together. If it’s a quality issue – we cover it. If not – we still guide you through the fix. We don’t just sell parts; we keep you running.