Sumitomo A20V064 Main Hydraulic Pump – China Remanufactured for SH120A3 Excavator

Description

Detail Information

1. Key Features & Benefits

• Precision‑remanufactured to Sumitomo OEM standards – This main hydraulic pump has been fully disassembled, cleaned, crack‑inspected, and rebuilt to meet Sumitomo Heavy Industries‘ original equipment specifications. Every critical component – cylinder block, piston assemblies, valve plate, swashplate, bearings, and seals – is either renewed or replaced with new, high‑quality parts. The result is restored hydraulic performance at a fraction of the cost of a new genuine pump.

• Direct replacement for Sumitomo SH120A3 excavators – Specifically engineered for Sumitomo SH120A3, SH120A2, SH120A1, and related 12‑ton class excavators. This pump powers the boom, arm, bucket, swing, and travel circuits with the precise, high‑volume flow required for construction, utility work, and earthmoving operations. The SH120A3 is equipped with an Isuzu 4BG1 engine, and its hydraulic system consists of a main pump (P1, P2) and a separate pilot pump.

• High‑efficiency variable displacement design – The A20V064 is engineered for high efficiency, converting mechanical energy into hydraulic power with minimal energy loss. The pump features optimized fluid dynamics that deliver responsive and precise hydraulic control, reducing operating costs over thousands of hours.

• High‑pressure capability for 12‑ton class work – Designed for continuous operation at high pressures, with the ability to withstand extreme loads in construction and utility environments. This pressure capability delivers consistent digging force, swing torque, and travel power hour after hour.

• Superior durability and contamination resistance – Utilizes high‑strength alloy cylinder blocks and precision‑lapped piston shoes to ensure minimal internal leakage and maximum volumetric efficiency. Equipped with oversized, low‑friction bearings to withstand the high radial and axial loads generated during multi‑function hydraulic movements. Premium seals and gaskets are installed to withstand extreme pressures and temperatures.

• Power proportioning solenoid valve for optimal efficiency – The A3 variant features a power proportioning solenoid valve controlled by the machine’s ECU, which optimizes pump output for higher efficiency and lower fuel consumption compared to earlier variants. This electronic control capability makes it suitable for modern hydraulic systems that require precise, responsive control.

• Restored 12‑ton class hydraulic power – After remanufacturing, this pump delivers the full rated flow and pressure your SH120A3 was designed for. Your excavator regains original digging force, fast cycle times, responsive swing, and smooth travel – eliminating the sluggish performance caused by internal wear and leakage.

• Direct bolt‑on replacement – Mounting flange, drive shaft spline, and hydraulic port configurations are restored to original Sumitomo specifications. No modifications, no adapters – your mechanic unbolts the old pump 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 remanufactured Sumitomo A20V064 main hydraulic pump is the power source for SH120A3 and 12‑ton class excavators used across a wide range of job sites:

• Urban construction & utilities – Sidewalk repairs, water and gas line trenching, fibre‑optic cable installation, and small‑scale demolition in tight access spaces. The pump‘s precise ECU‑controlled flow provides ”fine‑touch“ response for delicate digging near existing structures while delivering enough power for breaking compacted surfaces.

• Residential & commercial development – Foundation digging, basement excavation, retaining walls, grading, and site preparation. The pump’s smooth response and efficient operation minimise disturbance to nearby homes, while the variable displacement control adapts to changing load conditions.

• Road & bridge construction – Shoulder repairs, drainage installation, guardrail replacement, and slope stabilisation. The pump‘s ability to maintain consistent flow under varying loads ensures the excavator performs reliably throughout long shifts in exposed conditions.

• Agriculture & land management – Drainage ditch cleaning, irrigation trenching, pond maintenance, and fence post holes. The pump’s high‑pressure capability provides the attachment power needed for augers, trenchers, and rippers.

• Equipment rental fleet – 12‑ton excavators are frequently rented machines. A remanufactured pump offers predictable service life (typically 3,000–5,000 hours) at a cost that makes proactive replacement financially sensible – avoiding costly mid‑rental failures, towing bills, and customer complaints.

• Forestry & vegetation clearance – Steep slopes, fallen timber, and uneven terrain demand reliable hydraulic performance. The ECU‑controlled power proportioning system prevents engine stall under sudden load spikes, maintaining consistent power for saws, grapples, and mulchers.

3. Why Choose 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.

Why our remanufactured pumps outperform cheaper “rebuilt” units:

• Full component replacement, not just “reseal” – Many budget rebuilders reuse old bearings to save cost. We do not. All rotating components get new bearings – the single most important factor for pump longevity. The cylinder block and valve plate are re‑ground to restore flatness. A lapped surface is essential for low internal leakage. Without it, the pump will overheat and lose power within weeks.

• ECU‑compatible control calibration – The A20V064 features a power proportioning solenoid valve controlled by the machine’s ECU. Our remanufacturing process includes full calibration of the electronic control system to ensure seamless integration with your SH120A3‘s computer. Non‑genuine or poorly rebuilt pumps often fail to communicate correctly with the ECU, resulting in reduced efficiency and higher fuel consumption.

• 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 Sumitomo SH120 platform inside out – the different control variants (A1 vs A2 vs A3), mounting configurations, and production changes over the years.

• 90% of our catalog in stock – Your pump sits in our Guangzhou warehouse, not in a supplier’s backlog. From hydraulic pumps 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 Sumitomo, Caterpillar, Komatsu, Hitachi, 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 pump 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.