Short Description
Premium factory-direct aftermarkets Bosch Rexroth A6VM Series Variable Displacement Bent-Axis Piston Motors (Complete Assemblies), engineered as 100% plug-and-play interchangeable drop-in power solutions. Covering full frame sizes from A6VM28 to A6VM250 (Series 63 & 65), every single complete motor assembly undergoes rigorous multi-hour automated test bench validations to guarantee original factory efficiency, perfect torque curves, and zero dynamic external leakage under continuous operating pressures up to 400 bar (Peak 450 bar) in high-consequence rotary drilling power heads, crawler track drives, and heavy hoisting winches.
Key Technical Strengths
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100% Plug-and-Play OEM Fitment: Complete external dimensions, shaft splines, and porting configurations match the Bosch Rexroth factory blueprint precisely. Zero modifications required—mounts seamlessly onto standard heavy machinery gearboxes (e.g., GFT/GFB planetary drives).
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Automated Full-Load Test Bench Certified: We do not just build them; we validate them. Every A6VM motor assembly is tested at our advanced testing facility under simulated field working loops. We output complete digital reports certifying structural integrity, start-up torque coefficients, and low-speed stability profiles.
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Premium Heavy-Duty Internal Kinematics: Built with our proprietary high-density bimetal cylinder blocks and forged tapered piston groups ($60\text{–}62\text{ HRC}$). Capable of sustaining massive variable displacement pivoting angles and high centrifugal forces up to 4000+ RPM.
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Comprehensive Controller Versatility: Available with all standard variable displacement control variants, including HD (Hydraulic Pilot Control), EP (Electronic Proportional with proportional solenoids), and HZ (Hydraulic Two-Position Control), completely calibrated to match your fleet’s original electronic/hydraulic system parameters.
| Displacement Sizes (cc/rev) | Available Control Heads & Regulators | Target OEM Machinery & Drive Applications |
|---|---|---|
| A6VM28 / A6VM55 / A6VM80 / A6VM107 | HD: Hydraulic Pilot Control EP: Proportional Electronic (12V/24V Solenoid) HZ: Hydraulic Two-Position Control HA: Automatic High-Pressure Control DA: Hydraulic Speed-Dependent Control |
Crawler Excavator Travel & Track Drives, Road Milling Machines, Asphalt Pavers, Compact Winches, Forestry Equipment. |
| A6VM140 / A6VM160 / A6VM200 / A6VM250 | Rotary Drilling Rig Power Heads (SANY, XCMG, Zoomlion), Heavy Crawler Cranes Main Hoisting Winches, Piling Equipment, Marine Tugboat Winch Systems. |
Haozheng Hydraulic Production Processing Diagram
Haozheng Hydraulic Honorary Certificate
Exhibition
FAQ
Q1: Rebuilding is one thing, but purchasing a complete A6VM motor assembly online requires precise specification configuration. How do you ensure the replacement motor matches my host machine perfectly?
A: Complete fluid motor integration relies heavily on three key areas: the drive shaft profile (DIN splines or keyed), the porting flange architecture (SAE high-pressure code 62), and the exact variable controller head. To eliminate any installation mismatch, our desk requires either the full original Bosch Rexroth alphanumeric nameplate code (e.g., A6VM107EP2D/63W-VZB020FPB-S) or detailed dimensional photos of your existing control block. Our engineers will double-check the configuration before assembly.
Q2: Variable displacement motors face extreme low-speed stability and start-up torque demands. How does your factory guarantee performance out of the box?
A: Every single complete A6VM variable motor we ship undergoes exhaustive mechanical-to-volumetric testing cycles on our high-power dynamic test systems. We measure the actual displacement transition smoothness from $V_{min}$ to $V_{max}$, certify that the start-up friction coefficient matches factory parameters, and ensure that casing pressure remains strictly within normal thresholds under a continuous 400 bar load. A signed factory test report is attached to each shipping crate.
