Energy‑Saving Performance
Automatic displacement adjustment reduces energy and hydraulic oil waste while keeping the whole hydraulic system stable in operation.
APV-PV-360
APV-PV Series Axial Piston Variable Pumps
Size NG
360
Displacement
360 cm³/rev
Speed
1750 rpm
Flow
630 L/min
Nominal pressure
350 bar
Max. Pressure
420 bar
Weight (approx.)
180 kg
Products and performance
The APV-PV-360 variable displacement axial piston pump features an NG360 mounting interface and a displacement of 360 cm³/rev, delivering a steady flow of 630 L/min at a rated speed of 1750 rpm. With a rated pressure of 350 bar and a peak pressure capability of up to 420 bar, it is ideally suited for demanding, heavy-duty applications.
Utilizing proven variable displacement technology, the pump automatically adjusts its displacement based on real-time load demands. This effectively reduces energy consumption and hydraulic fluid waste while maintaining stable system operation, thereby significantly enhancing overall efficiency. Its advanced control system enables precise hydraulic regulation, optimizing the positioning accuracy and operational stability of the host equipment.
Designed for high reliability and versatility, the pump maintains consistent performance even in harsh industrial environments. It is widely used in open-circuit hydraulic systems across sectors such as steel manufacturing, papermaking, and construction machinery. Delivering energy-efficient, high-performance, and long-term reliable hydraulic power, the APV-PV-360 serves as an ideal core power component for high-pressure, heavy-duty industrial hydraulic systems.
Utilizing proven variable displacement technology, the pump automatically adjusts its displacement based on real-time load demands. This effectively reduces energy consumption and hydraulic fluid waste while maintaining stable system operation, thereby significantly enhancing overall efficiency. Its advanced control system enables precise hydraulic regulation, optimizing the positioning accuracy and operational stability of the host equipment.
Designed for high reliability and versatility, the pump maintains consistent performance even in harsh industrial environments. It is widely used in open-circuit hydraulic systems across sectors such as steel manufacturing, papermaking, and construction machinery. Delivering energy-efficient, high-performance, and long-term reliable hydraulic power, the APV-PV-360 serves as an ideal core power component for high-pressure, heavy-duty industrial hydraulic systems.
Specifications
APV-PV-360 General Information
Extra-large NG360 size with ultra-high hydraulic power output for heavy machinery and large hydraulic stations.
360 cm³/rev displacement has a wide adjustable range to drive multiple large hydraulic actuators simultaneously.
Rated speed of 1750 rpm reduces friction and heat generation, extending service life under continuous operation.
Rated flow 630 L/min provides massive continuous oil supply for large actuators and high productivity.
350 bar nominal pressure ensures robust continuous load capacity for long-cycle heavy-duty applications.
420 bar maximum pressure withstands sudden load spikes and protects all components in the hydraulic circuit.
Approx. 180 kg high-rigidity structure minimizes operating vibration for stable installation on large machines.
For open-circuit hydraulic systems, widely applied in steel, paper, construction machinery and other industries.
Product Features of APV-PV Series Variable‑Displacement Axial Piston Pumps
1. The ATUS-PV series comprises swashplate-type axial piston pumps designed for open-circuit applications with through-drive capability; they can be used as single units or in multiple-pump combinations and support the integration of electronic modules for industrial automation.
2. Maximum displacement ranges from 16 to 270 ml/rev.
3. Rated operating pressure is 350 bar, minimum rotational speed is 300 rpm, and the case drain port is positioned facing upwards.
4. The PV series piston pumps are available with either a standard pressure regulator or a power regulator.
5. Key advantages include low noise levels, rapid response, user-friendly operation, high self-priming speed, compact design, and long service life..
6. Features a through-drive design capable of transmitting 100% of the nominal torque.
7. Designed for open-circuit hydraulic systems; primarily used in industries such as steel manufacturing, papermaking, and construction machinery.
How to repair the mating pair of piston ball head and slipper inner ball socket.
- The factory assembly clearance between piston ball head and slipper ball socket is normally 0.015~0.025 mm.
- After prolonged service, the clearance enlarges. Parts can still be used if the clearance does not exceed 0.3 mm.
- Overlarge clearance will cause increased pulsation of pump outlet pressure and flow.
- In serious cases, loose slippers and slipper detachment may happen, further resulting in severe pump damage.
- Once signs of pressure and flow pulsation are detected, inspect slipper looseness in advance and conduct slipper re-clinching promptly.
How to repair the swash plate (thrust plate).
- After long-term operation, concave deformation will form on the flat surface of the swash plate.
- The workpiece can be surface-ground followed by nitriding treatment.
- If the removed material thickness (e.g. 0.2 mm) does not completely eliminate the original nitrided layer, re-nitriding may be omitted.
- Hardness inspection of the swash plate surface is mandatory in such cases.
What are the precautions for bearing replacement?
- Excessive bearing internal clearance will break the normal clearance of friction pairs and damage the oil film thickness of hydrostatic support, shortening the service life of piston pumps.
- The average service life of general bearings reaches 1000 hours (roughly more than two years). Bearings shall be replaced as appropriate after exceeding this service period.
- Replace with bearings of the identical model marked on the removed old bearing, or verified interchangeable alternatives.
- If grooves are scratched on the swash plate surface by piston ball heads (applicable to radial piston pumps), laser cladding with alloy powder is recommended for repair.
- Laser cladding ensures high bonding strength and hardness of deposited material without reducing the hardness of surrounding base metal.
- Manual overlay welding with chromium-type welding electrodes is an alternative method. The repaired swash plate surface requires re-heat treatment, preferably in a nitriding furnace.
- Regardless of the repair method adopted, the original dimensional accuracy, hardness and surface roughness of the swash plate must be restored.
Low oil Level Inclination Angle-Front Up
45 °
Low oil Level Inclination Angle-Back Up
45 °
Low oil Level Inclination Angle-Fuel Pump Side Up
45 °
Low oil Level Inclination Angle-Exhaust Side Up
45 °
Oil Sump Capacity-Upper Limit
14.2 L
Oil Sump Capacity-Lower Limit
12.4 L
Capacity of The Whole System
16.4 L
No Oil Suction / No Oil Discharge — Causes & Solutions
Main Causes and Troubleshooting Methods for Hydraulic Pump No Oil Suction / No Oil Discharge
- Damage to the hydraulic pump, pump motor, or coupling between motor and pump. Replace the faulty pump, motor or coupling in a timely manner.
- Too low oil level in the tank or excessively high pump installation position causes suction failure. Refill oil to the gauge level or adjust the pump height to keep the suction lift within the specified range.
- Oil impurities and increased viscosity block the suction filter and oil pipe. Clean pipes and filters regularly and replace with qualified hydraulic oil as required.
- Oil impurities and increased viscosity block the suction filter and oil pipe. Clean pipes and filters regularly and replace with qualified hydraulic oil as required.
Insufficient Pressure & Reduced Efficiency — Causes & Solutions
Main causes and troubleshooting methods for hydraulic pumps discharging oil but lacking pressure and exhibiting reduced efficiency.
- Severe wear of internal sliding parts leads to low volumetric efficiency and excessive axial/radial clearance. Replace the hydraulic pump or perform complete overhaul.
- Damaged oil pipes and poor suction-side sealing cause air intake. Check all connections, reseal joints or replace damaged pipelines.
- Blocked oil pipes and heavily contaminated filters. Clean pipelines and filters thoroughly to ensure full flow cleanliness.
- Incorrect variable pump adjustment and severely worn relief valve spool. Readjust flow parameters and replace worn relief valve components for stable pump operation.
- Motor speed below rated value and internal foreign impurities. Match the correct motor per specifications and clean internal impurities timely.
Severe Noise During Hydraulic Pump Operation — Causes & Solutions
Major Causes of Excessive Noise During Hydraulic Pump Operation and Methods for Troubleshooting
- Mostly caused by clogged filter, low oil level, air inhalation via oil seal and pipelines. Check tank oil level, repair pipelines, inspect pump seals, clean pipes and filters, and replace hydraulic oil periodically.
- Excessively high oil viscosity, low oil temperature and entrained air bubbles. Select suitable hydraulic oil according to seasons.
- Damaged coupling or misalignment between pump and motor leads to heavy vibration and loud noise. Inspect coupling wear, replace coupling and complete alignment strictly as installation requirements.
- Operating speed exceeds rated value and mismatched driving motor. Reduce pump speed and select a suitable motor.
- Worn shaft seal causes air intake; loose pump end cover bolts. Replace pump shaft seal and tighten cover bolts.
- Low gear precision, poor contact or damaged internal parts of gear pump. Replace or grind gears, renew damaged components.
- Insufficient axial clearance, out-of-tolerance perpendicularity or parallelism. Replace the gear pump entirely.
- Blockage inside relief valve. Clean or replace the relief valve.
- Vibration generated by unfixed pipelines. Secure all hydraulic pipelines firmly.
Hydraulic Pump Housing Oil Leakage — Causes & Solutions
Main Causes of Oil Leakage from Hydraulic Pump Bodies and Methods for Rectification
- Failure of the piston pump central spring breaks sealing between cylinder block and valve plate. Replace the spring and re-seal the mating surface.
- Damaged oil seals or worn/poorly fitted gaskets at pipeline connections. Replace all defective sealing parts.
- Severe wear of internal pump parts resulting in oversized operating clearances. Replace or refit the relevant components.
Excessive Temperature of Hydraulic Pump — Causes & Solutions
Main Causes of Hydraulic Pump Overheating and Troubleshooting Methods
- Excessively high or low oil viscosity, and accumulated impurities after long service. Replace hydraulic oil in a timely manner and adopt oil with proper viscosity.
- Heavy wear between pump side plates, shaft sleeves and gear end faces leads to overheating. Replace side plates, shaft sleeves or install a new hydraulic pump.
- Small tank volume restricts heat dissipation and triggers high oil temperature. Increase tank capacity and expand heat dissipation area.
Other Models
360cm³/rev
Speed
1750 rpm
Flow
630 L/min
Weight (approx.)
180 kg
Nominal pressure
350 bar
270cm³/rev
Speed
1800 rpm
Flow
486 L/min
Weight (approx.)
172 kg
Nominal pressure
350 bar
180cm³/rev
Speed
2200 rpm
Flow
396 L/min
Weight (approx.)
90 kg
Nominal pressure
350 bar
140cm³/rev
Speed
2400 rpm
Flow
336 L/min
Weight (approx.)
90 kg
Nominal pressure
350 bar
92cm³/rev
Speed
2300 rpm
Flow
212 L/min
Weight (approx.)
59 kg
Nominal pressure
350 bar
80cm³/rev
Speed
2500 rpm
Flow
200 L/min
Weight (approx.)
59 kg
Nominal pressure
350 bar
63cm³/rev
Speed
2800 rpm
Flow
176 L/min
Weight (approx.)
59 kg
Nominal pressure
350 bar
46cm³/rev
Speed
2800 rpm
Flow
129 L/min
Weight (approx.)
30 kg
Nominal pressure
350 bar
40cm³/rev
Speed
2800 rpm
Flow
112 L/min
Weight (approx.)
30 kg
Nominal pressure
350 bar
32cm³/rev
Speed
2800 rpm
Flow
90 L/min
Weight (approx.)
30 kg
Nominal pressure
350 bar
28cm³/rev
Speed
3000 rpm
Flow
84 L/min
Weight (approx.)
19 kg
Nominal pressure
350 bar
23cm³/rev
Speed
3000 rpm
Flow
69 L/min
Weight (approx.)
19 kg
Nominal pressure
350 bar
20cm³/rev
Speed
3000 rpm
Flow
60 L/min
Weight (approx.)
19 kg
Nominal pressure
350 bar
16cm³/rev
Speed
3000 rpm
Flow
48 L/min
Weight (approx.)
19 kg
Nominal pressure
350 bar
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