High-Flow Rexroth Piston Motor 100L/Min Capacity for Mobile
Machinery
Features:
1. Optimized Hydrostatic Transmission: Employs advanced control
techniques for hydrostatic drives
2. Load‑sense interface
3. Cost Efficiency: Elimination of gear shifts reduces overall
system costs
4. Integrated relief and bypass valves
5. Compact Bearing System: Features a compact and robust bearing
arrangement for durability
6. Optional electronic control unit (ECU)
7. High Power Density: Provides superior power output within a
compact footprint
8. High‑rigidity drive shaft
9. Low Moment of Inertia: Minimizes inertia for rapid dynamic
response
10. Dual‑side bearing support
Technical data:
| Size | NG | 80 | 107 | 140 | 160 | 200 | 250 |
| Geometric displacement, per revolution | Vg max | cm3 | 80 | 107 | 140 | 160 | 200 | 250 |
| Vg min | cm3 | 0 | 0 | 0 | 0 | 0 | 0 |
| Vg x | cm3 | 51 | 68 | 88 | 61 | 76 | 205 |
| Maximum rotational speed(while adhering to the maximum permissible
inlet flow) | at Vg max | nnom | rpm | 3900 | 3550 | 3250 | 3100 | 2900 | 2700 |
| at Vg < Vg x | nmax | rpm | 6150 | 5600 | 5150 | 4900 | 4600 | 3300 |
| where Vg 0 | nmax | rpm | 7350 | 6300 | 5750 | 5500 | 5100 | 3300 |
| Inlet flow | at nnom and Vg max | qv max | l/min | 312 | 380 | 455 | 496 | 580 | 675 |
| Torque | at Vg max and Δp = 400 bar | T | Nm | 509 | 681 | 891 | 1019 | 1273 | ‒ |
| at Vg max and Δp = 350 bar | T | Nm | 446 | 596 | 778 | 891 | 1114 | 1391 |
| Rotary stiffness | Vg max to Vg/2 | cmin | kNm/rad | 16 | 21 | 34 | 35 | 44 | 60 |
| Vg/2 to 0 (interpolated) | cmin | kNm/rad | 48 | 65 | 93 | 105 | 130 | 181 |
| Moment of inertia for rotary group | JTW | kgm2 | 0,008 | 0.0127 | 0.0207 | 0.0253 | 0.0353 | 0,061 |
| Maximum angular acceleration | α | rad/s² | 24000 | 19000 | 11000 | 11000 | 11000 | 10000 |
| Case volume | V | l | 1.2 | 1.5 | 1.8 | 2.4 | 2.7 | 3 |
| Weight approx. | m | kg | 36 | 46 | 61 | 62 | 78 | 100 |
Specifications:
| Warranty | 1 Year |
| Specification | SY-A6VM |
| Place of Origin | China |
| Type | Agricultural axial piston motor |
| Color | Available any color |
| HS Code | 8412299090 |
| Application | Agricultural machinery (harvesters, tractors) |
| Maximum pressure | 450 bar |
| Delivery Time | 15-30 Days after Payment |
| Displacement | 71-250 cm3 |
Applications:
1. In belt conveyor power unit applications, the Rexroth A6VM
series piston motor leverages its pressure-compensated control mode
and low pulsation output to enable smooth speed regulation of
material flow. Utilizing the load-sensing interface, this hydraulic
motor dynamically adjusts flow based on conveyor load, optimizing
energy use and preventing material slippage. Its compact footprint
and modular flange mounting simplify integration into conveyor
frameworks, reducing installation complexity and streamlining
maintenance procedures for industrial bulk handling systems.
2. In bulk material handling stations using screw conveyor systems,
the Rexroth A6VM hydraulic motor delivers reliable material
transport with its high starting torque and low-temperature startup
capability, even when handling cooled or chilled substances. The
corrosion-resistant housing material withstands acidic or alkaline
environments, while the integrated filter mounting interface
maintains oil cleanliness, prolonging service intervals. An
optional position locking device secures the screw shaft during
shutdown, preventing material backflow and ensuring operational
safety.
3. In wind turbine yaw control systems, the Rexroth A6VM axial
piston motor employs high-response solenoid valves and rapid
response time to achieve precise nacelle orientation in alignment
with prevailing wind directions. Featuring an integrated position
feedback interface and closed-loop control, this piston motor
continuously monitors yaw angles and makes automatic corrections to
maximize wind energy capture efficiency. Its low-noise operation
and optional IP65-rated waterproof and dustproof components ensure
reliable performance across both offshore and onshore environments.
Competitive Advantage:
1. Equipped with a two‑stage variable displacement mechanism, the
Rexroth A6VM axial piston motor delivers rapid response and a broad
speed control range, ensuring smooth transitions from startup to
full‑speed operation. The infinitely variable displacement allows
users to fine‑tune flow and pressure settings to match load
requirements precisely. Whether used in industrial presses,
injection molding machines, or wind turbine yaw drives, this
hydraulic motor offers exceptional control and adaptability. By
maintaining consistent performance across diverse process demands,
this piston motor elevates both precision and efficiency in modern
automation.
2. The Rexroth A6VM piston motor utilizes advanced surface coating
technology to enhance hardness and corrosion resistance, enabling
long‑term reliable operation in wet, dusty, or chemically
aggressive environments. Combined with an industrial‑grade
protective housing, this axial piston motor withstands
contamination from dust, sludge, and chemicals, ensuring
uninterrupted performance. Ideal for harsh‑duty applications such
as steel mills, chemical processing plants, and wastewater
treatment facilities, the hydraulic motor offers unparalleled
durability—minimizing maintenance needs and maximizing equipment
uptime in demanding industrial settings.
3. Integrated with an intelligent thermal management system, the
Rexroth A6VM hydraulic motor continuously monitors oil temperature
via built‑in sensors and automatically adjusts displacement to
prevent overheating. This dynamic control maintains optimal
lubrication and cooling performance under peak load conditions,
extending service life and reducing efficiency losses due to
thermal degradation. From cranes and rock crushers to airport
ground support vehicles, this piston motor ensures reliable
operation in temperature‑sensitive applications—providing
consistent output and safeguarding critical machinery against
heat‑related failures.
The Analysis For Rexroth A6VM Piston Motor Common Breakdown:
1. In failure scenario number 7, a sticking or worn speed control
valve (proportional valve) can cause unstable flow output and
increased deadband, leading to motor speed fluctuations and
positioning errors. Symptoms include sluggish response, chatter,
and drift. Recommended maintenance actions involve disassembling
the valve spool and body for inspection, cleaning or replacing worn
components, calibrating spool stroke, and fine-tuning control
signal parameters to restore valve sensitivity and ensure stable
flow delivery. Proper valve upkeep is crucial for maintaining
precise speed control and positional accuracy in hydraulic systems.
2. In failure scenario number 8, imbalance between hydrodynamic and
hydrostatic forces inside the motor can increase overturning
moments, causing uneven bearing loads and axial vibration. This
fault manifests as elevated bearing temperatures, intensified
vibration, and increased noise levels. To remediate, inspect
bearing clearances and seal fits, replace balance rings and seal
assemblies if worn, and conduct hydrostatic-dynamic balance
testing. Ensuring proper balance eliminates side loads, reduces
bearing stress, and restores smooth, quiet motor operation.
3. In failure scenario number 9, uneven lubrication or contaminated
oil passages within the motor can lead to dry contact, accelerated
wear, and significantly shortened service life. Symptoms include
increased noise, fluid leakage, and premature component failure.
Corrective actions include disassembling the motor to clean oil
channels thoroughly, inspecting and repairing damaged lubrication
lines or orifices, re-lubricating with high-performance hydraulic
oil, and verifying that all lubrication points receive consistent
fluid flow. Proper lubrication maintenance is essential for
extending motor longevity and ensuring reliable operation.
