Hitachi ZAX670 / ZX870-5G Swing Drive Gearbox – Specification (4698624)

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 Hitachi OEM-spec swing drive gearbox – OEM part number 4698624 (also referenced as YA00019027). Engineered to Hitachi’s original equipment specifications for the ZAX670-5G, ZX870-5G, and compatible 70–85 ton class excavators. This is a brand‑new, factory‑spec unit – not remanufactured, not a generic substitute. Genuine Hitachi components are engineered to the highest standards of quality, durability, and reliability.

• Critical component for 360° upper structure rotation – The swing drive, also known as the swing gearbox or slewing drive, is the power transmission component that allows the excavator to rotate on its base. It transfers power from the swing motor through a multi‑stage planetary gear reduction to the swing bearing, enabling the machine to dig, swing, and position material efficiently. When this gearbox fails, the machine cannot position itself for productive work.

• Direct replacement for Hitachi ZAX670 and ZX870 series – Specifically designed for Hitachi ZAX670-5G, ZX870-5G, ZX870-5A, ZX870-5B, ZX870-6, ZX870-7, ZX890-5A, ZX890-5B, ZX890-5G, ZX890-6, ZX890-7, and ZX870LC-5/LC-5B. Mounting flange, shaft interface, and bolt patterns match the original Hitachi specifications exactly – no modifications, no adapters.

• Multi‑stage planetary reduction design – The swing drive uses a precision planetary gear train to achieve the high reduction ratio required for 70–85 ton class excavator swing applications. This compact planetary design delivers smooth, consistent torque transfer with minimal backlash.

• Enhanced swing torque for 80‑ton class work – The Hitachi ZX870-5G features a 9% improvement in swing torque compared to the previous model, thanks to the advanced swing device and HIOS IIIB hydraulic system. The machine delivers a swing speed of 7.4–9.1 rpm and an operating weight of 80,800 – 84,200 kg. This swing drive provides the rotational power and smooth control needed for precise slewing operations in the most demanding applications.

• Engineered for the HIOS IIIB hydraulic system – The ZX870-5G is powered by Hitachi’s unique HIOS IIIB hydraulic system, developed with industry‑leading technology. This system delivers exceptional efficiency, reducing fuel consumption while significantly increasing productivity. The swing drive is precision‑matched to this advanced hydraulic platform, ensuring optimal performance and fuel efficiency.

• Robust construction for extreme 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.

• Factory-sealed and lubricated – The swing drive is sealed and filled with the correct lubricant at the factory. Premium seals prevent contamination ingress and oil leakage, ensuring reliable performance from day one.

• 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 4698624 swing drive gearbox is the power transmission component for the swing system on ZAX670 and ZX870‑5G series excavators used in the most demanding job sites:

• Large‑scale open‑pit mining – 80‑ton class excavators are the backbone of copper, gold, iron ore, and coal mining operations. The swing drive‘s enhanced torque delivery and 9% improvement over previous models provide faster, more precise slewing for loading 100+ ton haul trucks in 20+ hour shifts. The robust planetary reduction withstands the extreme shock loads of hard rock extraction.

• Quarrying & aggregates – Loading trucks, stockpile management, and material handling in granite, limestone, and basalt quarries. The swing drive’s robust construction and sealed design withstand abrasive dust conditions, while the multi‑stage planetary reduction provides consistent torque for precise bucket control.

• Heavy construction & infrastructure – Highway excavation, dam building, bridge footings, and large‑scale earthmoving projects. The swing drive‘s smooth rotation and high torque output enable precise positioning of the upper structure for efficient loading and digging cycles. The HIOS IIIB hydraulic system reduces fuel consumption while significantly increasing productivity.

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

• Equipment rental fleet – 70–85 ton excavators are high‑value rental assets. A genuine new swing drive 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 swing drive’s consistent torque delivery ensures smooth, controlled rotation even under varying load conditions.

3. FAQ – Frequently Asked Questions

Q1: Is this swing drive an exact replacement for my Hitachi ZAX670 or ZX870‑5G?

A: Yes. The 4698624 (YA00019027) is the genuine Hitachi swing drive gearbox for ZAX670-5G, ZX870-5G, ZX870-5A, ZX870-5B, ZX870-6, ZX870-7, ZX890-5A, ZX890-5B, ZX890-5G, ZX890-6, ZX890-7, ZX870LC-5, and ZX870LC-5B. To confirm compatibility for your specific machine variant, send us your machine serial number and a photo of the old drive nameplate – we will verify within 2 hours.

Q2: Is this a new unit or a remanufactured unit?

A: It is brand new / genuine original, not remanufactured. All internal components – gears, bearings, seals, and housing – are new. The swing drive is manufactured to Hitachi‘s original specifications and meets all OEM performance standards.

Q3: Does this swing drive include the swing motor?

A: No. This is the swing drive gearbox (swing reducer) only – the planetary gearbox section without the hydraulic swing motor. It is designed to accept your existing or a new swing motor. The swing motor converts hydraulic pressure into rotary motion, and the swing drive gearbox reduces speed and multiplies torque to rotate the upper structure.

Q4: What is the key specification of this swing drive?

A: The 4698624 swing drive is engineered for Hitachi‘s 70–85 ton class excavators featuring the HIOS IIIB hydraulic system. The ZX870‑5G delivers a swing speed of 7.4–9.1 rpm and a 9% improvement in swing torque over the previous model. The machine has an operating weight of 80,800 – 84,200 kg.

Q5: What is the warranty on this swing drive?

A: Warranty period is 3 to 6 months depending on product details. We do not provide warranty service for genuine original parts. Our value is delivered up front: genuine Hitachi specification components, new‑condition drive, and pre‑shipment visual verification. For customers who require a warranty‑covered option, we can quote aftermarket alternatives – ask our sales team.

Q6: How long does delivery take?

A: Delivery is 5–8 working days after order confirmation from our Guangzhou warehouse. Express shipping (DHL/FedEx/UPS) is available for urgent orders.

Q7: What payment methods do you accept?

A: We accept L/C, T/T, XTransfer, PayPal, and Western Union.

Q8: How can I verify the drive is genuine before shipping?

A: Before packing, we send you clear, high‑resolution photographs of the actual unit – mounting flange, splines, port threads, casting marks, and overall condition. You approve shipment only after reviewing these images. We never ship blind.

Still have questions? Contact Hongtengda Parts – we reply within 24 hours.