A6VM107 Hydraulic piston pump
2 month ago
Product details
Technical data
All-purpose high pressure motor.
Sizes 28 to 200:
--Nominal pressure 400 bar.
--Maximum pressure 450 bar.
Sizes 250 to 1000:
--Nominal pressure 350 bar.
--Maximum pressure 400 bar.
Open and closed circuits.
Features
Robust motor with long service life.
Approved for very high rotational speeds.
High control range (can be swiveled to zero).
High torque.
Variety of controls.
Optionally with flushing and boost-pressure valve mounted.
Optionally with integrated or mounted counterbalance valve.
Bent-axis design.
I. Product Overview
Model: A6VM107
Type: Swashplate-type axial piston variable-displacement pump (with pressure compensation, reversible rotation)
Manufacturer: Bosch Rexroth
Core Positioning:
• Medium-high pressure, large-flow hydraulic power source for open or closed hydraulic systems.
• Supports bidirectional rotation and variable displacement control (electro-hydraulic proportional/manual), commonly used in construction machinery propulsion drives and industrial equipment high-pressure circuits.
II. Key Technical Specifications
【表格】
Parameter Specification
Nominal Displacement 107 cm³/rev (infinitely adjustable via swashplate angle)
Rated Pressure 350 bar (continuous); peak pressure 400 bar (short-term allowable)
Speed Range 600–2000 rpm (optimal: 1200–1800 rpm)
Control Mode HA4V (electro-hydraulic proportional with pressure cutoff) or manual
Swashplate Angle ±11° (variable range, supports forward/reverse rotation)
Weight Approx. 65 kg (including pump body and control valve)
Port Type SAE flange + O-ring seal (high-pressure port: #20; low-pressure port: #16)
Cooling Method Built-in flushing valve (optional external circulation cooling)
Noise Level ≤85 dB(A) (measured 1m from pump)
III. Structure and Working Principle
1. Core Components:
• Piston Cylinder Block: 9 pistons evenly distributed, achieving displacement adjustment via swashplate oscillation.
• Variable Mechanism: HA4V control valve regulates swashplate angle through proportional solenoids, supporting pressure compensation and flow limitation.
• Charge Pump: Built-in gear pump (displacement ~5 cm³/rev) provides makeup oil and cooling for closed systems.
2. Control Logic:
• Electro-Hydraulic Proportional Control: Input signal (4–20 mA or 0–10 V) drives proportional solenoids for infinite displacement adjustment.
• Pressure Cutoff: Automatically reduces displacement when system pressure reaches the setpoint (e.g., 320 bar) to protect the system.
3. Closed-System Characteristics:
• High-pressure and low-pressure circuits form a closed loop, reducing leakage and contamination risks.
• Requires a charge pump, flushing valve, and high-pressure filter.
IV. Typical Applications
1. Construction Machinery:
• Excavator travel motor drives, crane slewing mechanisms, road roller vibration systems.
2. Industrial Equipment:
• Injection molding machine clamping units, metal die-casting machine hydraulic systems, ship steering gears.
3. Specialized Fields:
• Wind turbine yaw systems, tunnel boring machine cutter head drives (customized anti-contamination versions required).
V. Common Failures and Diagnostics
【表格】
Symptom Possible Causes Solutions
Insufficient Flow Stuck swashplate, low charge pressure, worn pistons Clean variable mechanism, check charge pump pressure, replace piston set
Pressure Fluctuation Faulty proportional valve coil, control signal interference, oil contamination Test solenoid resistance, shield control lines, replace hydraulic oil/filter
Abnormal Noise Bearing failure, loose pistons, air ingestion Replace main bearings, tighten pistons, perform air bleeding
High Oil Temperature Inadequate cooling, excessive displacement, severe internal leakage Check flushing valve flow, adjust displacement setting, repair leaking components
VI. Maintenance and Upkeep Recommendations
1. Daily Inspections:
• Monitor oil temperature (recommended ≤80°C), pressure gauge readings, and charge pump pressure (normal 1.5–2.5 bar).
• Check oil level (via sight glass or dipstick).
2. Periodic Maintenance:
• Every 500 hours: Replace hydraulic oil filter (≤10 μm precision), inspect control wiring.
• Every 2000 hours: Replace hydraulic oil (ISO VG46 anti-wear oil recommended), clean variable mechanism.
3. Critical Component Lifespan:
• Piston set: ~8,000 hours (varies by operating conditions);
• Bearings: ~10,000 hours;
• Proportional valve: ~5,000 hours (requires periodic performance testing).
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Ningbo Hengnuo Hydraulic Drive Co.,Ltd
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3 year
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hydraulic motor,
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