Rexroth Axial Piston Motor 500 cc/rev Chrome-Plated Pistons for
Mining Equipment
Features:
1. Axial tapered piston rotary group with bent-axis design.
2. Integrated cooling line ports.
3. Infinitely adjustable displacement from Vg max to Vg min=0.
4. High‑pressure sealing system.
5. Torque increases linearly with pressure differential and
displacement.
6. Tungsten carbide valve plate surface.
7. High power-to-weight ratio design.
8. Case‑hardened spool and sleeve.
9. Low inertia moment characteristic.
10. Integrated filter mounting interface.
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 | Rexroth axial piston motor |
Color | Available any color |
HS Code | 8412299090 |
Application | excavator, loader, construction machinery |
| Maximum pressure | 450 bar |
Delivery Time | 15-30 Days after Payment |
| Displacement | 80-250 cm3 |
Applications:
1. In offshore platform mooring and positioning systems, the
Rexroth A6VM hydraulic motor delivers precise traction control of
anchor chains and positioning lines through its bi-directional
rotation output and efficient internal leakage control. Its
high-temperature stability and thermal expansion compensation
design enable reliable operation under marine heat and salt spray
conditions. With an integrated oil temperature sensor port, this
hydraulic motor provides real-time monitoring to prevent
overheating, ensuring safe and continuous platform operation.
2. In injection molding machine ejector drives, the Rexroth A6VM
axial piston motor exploits its high power density and rapid
response characteristics to deliver precise control over mold
ejection sequences. Featuring modular flange mounting and
integrated cooling line ports, this hydraulic motor mounts directly
to the machine frame and interfaces with cooling systems to
dissipate heat generated during high-frequency ejection cycles. Its
efficient internal leakage control reduces hydraulic oil
consumption, boosting productivity and lowering operating costs in
plastic molding operations.
3. In plastic extrusion machine haul-off drives, the Rexroth A6VM
piston motor combines pressure-compensated control and low-noise
operation to provide smooth speed regulation of extruded profiles.
Its integrated bypass valve and proportional load-sense amplifier
enable rapid flow adaptation during fluctuating loads, ensuring
consistent product quality. With high contamination tolerance
suitable for filled or fiber-reinforced materials, this axial
piston motor delivers reliable performance over extended duty
cycles in demanding polymer processing environments.
Competitive Advantage:
1. The Rexroth A6VM axial piston motor features multiple mounting
interfaces and flange configurations, enabling rapid integration
with a wide range of mechanical systems. Its modular design allows
users to swap flange plates and couplings to match international
industry standards, facilitating seamless adaptation to diverse
construction machinery platforms. This hydraulic motor reduces
retrofitting time and accelerates upgrade cycles for OEMs and
service providers, ensuring compatibility across regional markets.
By offering plug‑and‑play versatility, this hydraulic motor
streamlines equipment deployment and enhances aftermarket support
efficiency.
2. The Rexroth A6VM hydraulic motor incorporates an
energy‑regeneration feature, utilizing a dual‑channel valve system
to recover excess fluid and reuse hydraulic power. By minimizing
wasted flow, this axial piston motor reduces fuel consumption and
extends hydraulic oil service life, cutting down maintenance
intervals. It is especially advantageous in high‑cycle applications
such as robotic manipulators and pile-driving rigs, where
continuous reciprocating motion demands both efficiency and
reliability. This piston motor’s innovative energy management
enhances productivity while promoting sustainable operation.
3. Equipped with bi‑directional load-sensing control, the Rexroth
A6VM piston motor continuously adjusts displacement in response to
pressure fluctuations on both inlet and outlet sides, ensuring
stable speed and torque output. The load-sensing mechanism also
shields the system from shock loads, delaying component fatigue and
failure. Ideal for heavy‑duty machinery like concrete mixers,
bulldozers, and hydraulic shears, this hydraulic motor maintains
consistent performance under varying load conditions, enhancing
equipment longevity and operational safety in demanding
applications.
The Analysis For Rexroth A6VM Piston Motor Common Breakdown:
1. In failure scenario number 10, external vibration or improper
installation can cause stress concentrations at the
motor-to-equipment interface, potentially leading to keyway or
flange cracking, resulting in leakage or misalignment. Indicators
include unusual noises, fluid seepage, and motor displacement.
Recommended preventive measures involve verifying alignment and
torque specifications during installation, employing flexible
couplings or vibration isolators to mitigate stress, and conducting
nondestructive testing on connection points. Ensuring robust
mounting practices prevents structural damage and maintains stable
motor operation in dynamic environments.
2. In failure scenario number 11, the A6VM axial piston motor may
experience internal leakage and pressure drop caused by worn seals,
insufficient lubrication, or contaminated hydraulic fluid. This
fault can lead to reduced torque output and rotational speed,
thereby compromising overall system efficiency and potentially
resulting in increased vibration and operational noise. It is
recommended to inspect and replace all seal elements, flush and
replace the hydraulic oil according to the manufacturer’s
specifications, and verify the condition of filters and the cooling
system to restore optimal performance and extend service life.
During reassembly and maintenance, technicians should strictly
follow the manufacturer’s prescribed torque values and installation
sequence to prevent secondary leakage.
3. In failure scenario number 12, unstable pressure circuits may
form inside the A6VM axial piston motor due to leakage on the
high-pressure side or blocked return oil passages, resulting in
flow fluctuations and motor slipping. Symptoms include operational
jerking, intermittent torque loss, and sluggish system response. To
troubleshoot, inspect the high-pressure lines and return oil pipes
for blockages or restrictions, clean or replace clogged pipelines
and filter elements, and verify that the settings of hydraulic
control valves and relief valves meet the manufacturer’s
specifications. Proper restoration of pressure balance is essential
for smooth and reliable motor operation. Additionally, during
maintenance, follow recommended installation guidelines for hoses
and fittings to prevent exacerbating leakage due to external
vibration.
