Shaoyang Victor Hydraulic Co., Ltd.
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High-Speed Construction Machinery Piston Motor for Mobile Use 63cm³ 5500 RPM
Features:
1. Bent-axis design with axial tapered piston rotary group
2. Output speed dependent on pump flow and motor displacement
3. Finely graduated displacement sizes for diverse drive requirements
4. High total efficiency (optimized volumetric and mechanical efficiency)
5. Economical design reducing lifecycle costs
6. Suitable for mobile and stationary applications
7. Maximum operating pressure up to 450 bar
8. Capable of operating at speeds up to 5000 rpm
9. Modular port configurations (SAE flange or threaded connections)
10. Compatibility with low-viscosity fluids (νopt=16-36 mm²/s)
Technical data:
| Size | NG | 45 | 56 | 63 | 80 | 90 | 107 | 125 | 160 | 180 | ||
| Displacement geometric, per revolution | Vg | cm3 | 45.6 | 56.1 | 63 | 80.4 | 90 | 106.7 | 125 | 160.4 | 180 | |
| Speed maximum | nnom | rpm | 5600 | 5000 | 5000 | 4500 | 4500 | 4000 | 4000 | 3600 | 3600 | |
| nmax | rpm | 6200 | 5500 | 5500 | 5000 | 5000 | 4400 | 4400 | 4000 | 4000 | ||
| Input flow at nnom and Vg | qV | L/min | 255 | 281 | 315 | 362 | 405 | 427 | 500 | 577 | 648 | |
| Torque at Vg and | Δp = 350 bar | T | Nm | 254 | 313 | 351 | 448 | 501 | 594 | 696 | 893 | 1003 |
| Δp = 400 bar | T | Nm | 290 | 357 | 401 | 512 | 573 | 679 | 796 | 1021 | 1146 | |
| Rotary stiffness | c | kNm/rad | 4.18 | 5.94 | 6.25 | 8.73 | 9.14 | 11.2 | 11.9 | 17.4 | 18.2 | |
| Moment of inertia for rotary group | JGR | kgm2 | 0.0024 | 0.0042 | 0.0042 | 0.0072 | 0.0072 | 0.0116 | 0.0116 | 0.022 | 0.022 | |
| Maximum angular acceleration | a | rad/s2 | 14600 | 7500 | 7500 | 6000 | 6000 | 4500 | 4500 | 3500 | 3500 | |
| Case volume | V | L | 0.33 | 0.45 | 0.45 | 0.55 | 0.55 | 0.8 | 0.8 | 1.1 | 1.1 | |
| Mass (approx.) | m | kg | 13.5 | 18 | 18 | 23 | 23 | 32 | 32 | 45 | 45 | |
Specifications:
| Warranty | 1 Year |
| Transport Package | Standard Export Wooden Case |
| Structure | Axial Piston motor |
| Type | Mobile machinery piston motor |
| Production Capacity | 2000-3000 pcs/month |
| HS Code | 8412299090 |
| Application | Mobile crane, Combine Harvester, Concrete mixer truck |
| Maximum speed | 3600rpm |
| Delivery Time | 15-30 Days after Payment |
| Displacemen | 45-180cc |
Applications:
Competitive Advantage:
1. The A2FM motor is fully compatible with modern digital control systems, allowing for precise monitoring and remote adjustments, and when combined with a piston motor, it facilitates automated tuning and real‐time performance tracking, making it an ideal solution for smart industrial systems that demand advanced control capabilities, ensuring unparalleled automation.
2. The A2FM motor incorporates advanced safety features that protect both the equipment and operators, and when used with a hydraulic motor, it ensures secure pressure regulation and rapid shutdown in emergency situations, thereby reducing risk and safeguarding industrial processes through reliable, high‐performance hydraulic control, guaranteeing utmost operational safety always consistently.
3. Hard-chrome plated pistons withstand 1,600℃ radiant heat in slab casting. 0.1r/min precision via closed-loop valves eliminates oscillation marks, achieving 8,000h MTBF.
The Analysis For Rexroth A2FM Fixed Displacemen Piston Motor Common Breakdown:
1. Prolonged high-load operation may cause abnormal wear of internal components in the A2FM motor—especially pistons, seals, and bearings—leading to overall performance degradation and increased failure risk. Regular maintenance, enhanced lubrication, and thorough inspection of the piston motor assembly are critical to prevent excessive wear and ensure long-term reliability.
2. Over time, cumulative factors such as oil contamination, component wear, seal failure, and inadequate maintenance can gradually degrade the overall performance of the A2FM motor, resulting in reduced efficiency and unstable output. A comprehensive evaluation of the entire hydraulic system, including the hydraulic motor, is essential to optimize design and restore reliable operation.
3. Housing Resonance Causes Bolt Fracture: 200Hz pressure pulsation resonance shears M12 bolts in 300h. Install rubber-metal dampers to shift resonance above 250Hz.