APPLICABLE MODELS: HITACHI EX1800, EX3500, EX3600, AND OTHER ULTRA-LARGE MINING EXCAVATORS (LVP370-115LOF SERIES)

The VP370-115LOF variable-displacement axial piston main pump is specifically designed for large Hitachi mining excavators, particularly the EX1800 and EX3600 models. Built with a heavy-duty design, this pump is engineered to withstand continuous, 24/7 mining operations. It delivers high-pressure output and stable flow, powering the excavator's boom, arm, bucket, and swing mechanisms.

We offer brand-new units, refurbished/reconditioned pumps, and a full range of internal spare parts. Our refurbished units undergo complete disassembly and ultrasonic cleaning; worn components—such as cylinder blocks, valve plates, piston shoes, servo assemblies, seals, and bearings—are replaced.

• ✔Every pump undergoes comprehensive bench load testing before shipment.
• ✔Test reports and videos are available upon request.
• ✔Designed for a direct 1:1 replacement—no modifications required.
• ✔Professional services available, including pump overhauling, assembly, calibration, and technical support.
• ✔Spare parts for rotating groups (the core components of the piston pump) are available in stock.

We maintain an extensive inventory of hydraulic main pumps, swing motors, travel motors, and control valves for large mining excavators.

The hydraulic pump is a critical component in heavy machinery. Regular maintenance extends its service life and ensures normal machine operation. Follow the steps below for proper hydraulic pump maintenance.

1. Check for leaks: Inspect the hydraulic pump regularly for leaks, including pipes, joints, and connections.
2. Replace the filter element: Replace the filter element regularly to ensure the cleanliness of the hydraulic oil.
3. Check the oil: Regularly check oil quality and oil level, and replace or replenish the hydraulic oil in time.
4. Lubrication: Add lubricating oil to the lubrication points regularly to ensure normal operation.
5. Regular inspection: Check various parameters and working conditions according to the operation manual.

• Before performing maintenance, disconnect the power supply and wait for the hydraulic system to cool.
• Use hydraulic oil of the specified model and specifications. Never mix hydraulic oil of different brands.
• If the pump operates abnormally or makes unusual noises, stop it immediately and have it inspected by a professional technician.