Shaoyang Victor Hydraulic Co., Ltd.
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A6VM71 Rexroth Piston Motor Cast Iron Material for Road Roller 400 Bar Pressure
Features:
1. Variable Displacement: Infinitely adjustable displacement from maximum to zero
2. Axial Piston Construction: Utilizes tapered pistons for efficient energy conversion
3. Bent-Axis Configuration: Integrated bent-axis rotary group for optimized power transmission
4. Dual Circuit Compatibility: Suitable for both open and closed hydrostatic circuits
5. Mobile Application Optimized: Specifically designed for mobile machinery applications
6. Stationary Application Friendly: Ideal for various fixed installation systems
7. Wide Control Range: Meets high-speed operational requirements
8. High Torque Output: Delivers substantial torque transmission performance
9. Flow-Dependent Speed: Output speed regulated by pump flow and displacement settings
10. Pressure-Enhanced Torque: Torque increases with rising pressure differential and displacement
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:
| Trademark | SY-Hydraulic |
| Transport Package | Standard Export Wooden Case |
| Certification | ISO9001: 2000 |
| Type | Harvester axial piston motor |
| Production Capacity | 1000 pcs/month |
| HS Code | 8412299090 |
| Application | Agricultural machinery (harvesters, tractors) |
| Maximum speed | 6300 rpm |
| Delivery Time | 15-30 Days after Payment |
| Displacement | 71-250cc |
Applications:
Competitive Advantage:
1. The Rexroth A6VM variable motor offers unparalleled variable displacement and robust design, ensuring optimal performance in diverse hydraulic applications with exceptional energy efficiency, quick response, and precision control, and its integration with a piston pump guarantees reliable operation under heavy loads, making it a competitive advantage in the market remarkably.
2. Combining advanced digital control and robust construction, the Rexroth A6VM variable motor delivers exceptional operational reliability in harsh industrial environments, while integration with an axial piston pump provides seamless energy transfer and precise speed modulation and efficient power management, thereby offering significant competitive advantages and enhanced system performance beyond expectations consistently.
3. High-Efficiency Variable Control: The axial piston motor A6VM dynamically adjusts displacement based on load demands, achieving optimal torque-speed balance. With closed-loop control accuracy under 2%, this hydraulic motor reduces idle energy consumption by 30%, ideal for industrial automation or construction machinery requiring frequent speed changes.
The Analysis For Rexroth A6VM Piston Motor Common Breakdown:
1. The Rexroth A6VM variable motor may experience abnormal temperature rise due to fluid contamination and insufficient lubrication, which can lead to internal component wear and seal degradation; integration issues with the piston pump can exacerbate these faults, requiring prompt maintenance intervention to restore optimal system performance for long-term system reliability.
2. The A6VM motor may suffer from internal cavitation caused by air entrainment in the hydraulic fluid, resulting in erratic pressure fluctuations and premature wear of moving parts; misalignment with the axial piston pump further intensifies these issues, necessitating thorough system flushing and recalibration to restore stable operation immediately.
3.nsufficient Torque Output: Low torque under rated pressure may stem from excessive internal leakage due to piston/cylinder wear (>10 L/min) or swashplate stuck at minimum displacement. Verify control valve feedback and inspect variable mechanism lubrication.