Shaoyang Victor Hydraulic Co., Ltd.
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Construction machinery piston motor with industry-leading power density exceeding 200kW/m3
Features:
1. Compact bearing system with enhanced rigidity.
2. Industry-leading power density exceeding 200kW/m³.
3. Low-temperature cold start assurance technology.
4. Ultra-low moment of inertia for rapid dynamic response.
5. Cross-port face valve plate for noise reduction.
6. Secondary sealing in axial piston assembly.
7. Peak pressure resistance up to 450bar.
8. Mechanical reversibility for bidirectional rotation.
9. ISO 3019-2 compliant flange mounting.
10. Modular service unit for simplified maintenance.
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:
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Warranty
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12 months | |||
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Transport Package
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Standard Export Wooden Case | |||
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Certification
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ISO9001: 2000 | |||
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Type
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Construction machinery piston motor
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Production Capacity
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1000 pcs/month | |||
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HS Code
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8412299090 | |||
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Application
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Construction machinery mobile drive systems | |||
| Maximum torque | 1273 Nm | |||
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Delivery Time
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15-30 Days after Payment
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| Displacement |
71-250cc
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Applications:
Competitive Advantage:
1. Modular counterbalance valves prevent hydraulic cylinder slippage in waste compactors, achieving ±0.5mm positioning accuracy.
2. Volumetric efficiency >95% reduces internal leakage via optimized plunger clearance, improving fuel economy in concrete pumps.
3. Allow seal replacement without disassembly, cutting maintenance time to 30 minutes.
4. Lifecycle cost optimization with 20,000-hour MTBF reduces total ownership costs by 25%.
5. Multi-mode controls (HA/HD/HZ) enable CAN bus-PLC synchronization with 50ms response time.
The Analysis For Rexroth A6VM Piston Motor Common Breakdown:
1. High-pressure relief valve squeal: System pressure oscillation >±10%
Repair: Grind valve seat contact surface and test opening pressure gradient
2. Spline shaft torsional deformation: Phase angle deviation >2°
Repair: Laser straightening or replacement with 42CrMo4 alloy steel components
3. Displacement feedback failure: LVDT sensor signal fluctuation
Repair: Recalibrate sensor zero point and shield signal lines from interference
4. Cylinder block spherical hinge loosening: Low-speed creeping phenomenon
Repair: Tighten with torque wrench (120±5Nm) and apply thread locker
5. Flushing valve blockage: Oil contamination level NAS＞9
Repair: Disassemble and clean valve core; install β5=75 filtration system