A6VM200 Variable Displacement Hydraulic Motor
3 month ago
Product details
Axial Piston Variable Displacement Motor with Bent-Axis Design
Applications:
Suitable for hydrostatic drives in both closed-loop and open-loop systems, including mobile machinery and industrial equipment.
Key Features:
1. Wide Adjustment Range:
• The variable displacement motor meets high-speed and high-torque requirements through its extensive adjustment range.
• Displacement is infinitely adjustable fromVgmaxtoVgmin = 0.
• Output speed is proportional to flow rate and inversely proportional to displacement.
• Output torque increases with the pressure differential across the motor ports and larger displacement.
2. Large Swivel Angle Range:
• The bent-axis design enables a wide swivel angle, enhancing operational flexibility.
3. Versatile Control Options:
• Supports multiple control methods for precise adaptation to system demands.
4. Compact & High Power-to-Weight Ratio:
• Eliminates the need for a gearbox, resulting in a compact structure with superior power density.
5. Durable & Efficient Performance:
• Long-life bearing system ensures reliability.
• Excellent starting characteristics, low inertia, and reduced noise levels.
A6VM200 Variable Displacement Hydraulic Motor
(A6VM200 Bent-Axis Axial Piston Variable Displacement Motor)
1. Product Overview
The A6VM200 is a high-performance variable displacement hydraulic motor from Bosch Rexroth, part of theA6VM series(covering displacements from 28 to 1000 mL/r). Its core design features abent-axis structure, enabling stepless displacement adjustment by varying the angle between the cylinder block and the driveshaft. It is suitable for hydrostatic drives in bothopen-loop and closed-loop systems.
2. Key Features
• Bent-Axis Design:
• Combines an axial tapered piston rotor group with a bent-axis structure to optimize mechanical efficiency and power density.
• Spherical port plate with self-centering alignment reduces wear and extends service life.
• Wide Displacement Adjustment Range:
• Displacement can be adjustedsteplessly from Vg max (maximum displacement) to Vg min = 0, meeting dynamic demands for high speed and high torque.
• Output speed is proportional to pump flow and inversely proportional to displacement; output torque increases with pressure differential and displacement.
• Multiple Control Options:
• HD (Hydraulic Proportional Control): Adjusts cylinder block swivel angle via pilot pressure for continuous displacement variation.
• EP (Electro-Proportional Control): Integrates servo motor direct drive technology for high-frequency response and precision.
• HA (High-Pressure Automatic Control): Automatically intervenes when load pressure reaches a threshold to maintain system stability.
• DA (Speed-Dependent Control): Synchronizes with variable pumps to adjust pilot pressure based on drive speed, optimizing speed-torque matching.
• Compact Structure & High Power Density:
• Central recessed mounting flange allows direct integration into mechanical gearboxes, saving space.
• Eliminates gear transmission mechanisms, achieving a compact design with a high power-to-weight ratio.
• Reliability & Durability:
• Long-life bearing system designed for high-pressure, high-frequency operation.
• Optimized sealing for stable performance across a wide temperature range (-20°C to 90°C).
• Low rotational inertia and noise, meeting energy-saving and environmental requirements.
3. Technical Specifications
• Operating Pressure:
• Continuous pressure: 35 MPa
• Peak pressure: 40 MPa
• Displacement Range: 200 mL/r (A6VM200 model)
• Control Methods: HD/EP/HA/DA (customizable control logic available)
• Fluid Compatibility: Mineral oil-based hydraulic fluids (viscosity range: 10–400 cSt)
• Mounting Configuration: Flange-mounted (recessed design for easy integration)
4. Applications
The A6VM200 is widely used in high-load, high-precision mechanical power systems, including:
• Construction Machinery:
• Rotary drives for excavators, rotary drilling rigs, and pile driving equipment.
• Mixing and traveling systems for concrete pumps and pavers.
• Industrial Equipment:
• Rotary and traction mechanisms for mining machinery (roadheaders, hoists).
• Constant-tension control for marine deck machinery (winches, capstans).
• Specialized Applications:
• Cutter head drives for tunnel boring machines (TBMs) and continuous wall grab drives.
• Clamping and injection systems for injection molding and die-casting machines.
5. Advantages
• Fast Dynamic Response: Bent-axis structure combined with high-frequency control technology adapts to sudden load changes.
• Energy Efficiency: Stepless displacement adjustment minimizes energy loss, enabling volumetric speed control when paired with variable pumps.
• Easy Maintenance: Modular design with pre-installed test components simplifies installation and commissioning.
• Versatility: Supports bidirectional rotation and multi-stage displacement adjustment for complex operating conditions.
6. Typical Model Examples
• A6VM200HA2/63W-VAB02000A:
• Equipped with HA high-pressure automatic control for heavy-duty lifting mechanisms (e.g., crane hoists).
• A6VM200EP2D/63W-VAB020FHB-K:
• Integrates EP electro-proportional control and DA speed-dependent control for dynamic load matching (e.g., drilling rig rotary platforms).
7. Precautions
• Installation & Commissioning: Must be performed by qualified personnel, strictly following manual instructions (e.g., port cleanliness, torque specifications).
• Operating Condition Monitoring: Maintain fluid temperature and pressure within specified limits to prevent performance degradation under extreme conditions.
• Maintenance Intervals: Replace hydraulic fluid regularly (recommended every 1,000–3,000 hours or 6 months) and inspect seals and bearings.
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hydraulic motor,
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