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In modern industrial hydraulics, the axial piston variable displacement pump stands as the heart of dynamic fluid power transmission. Among these, the A10V Series (encompassing A10VO for open circuits and A10VSO for industrial stationary installations) has established itself as the global industry benchmark. Leveraging a sophisticated swashplate design, the A10V series enables infinite variability of volumetric displacement, adjusting output fluid flow seamlessly based on operational pressures.
Technically, the axial piston design utilizes a series of pistons arranged parallel to the drive shaft. These pistons slide on an angled swashplate. As the cylinder block rotates, the piston shoes follow the contour of the swashplate, driving reciprocating motion that sucks in and subsequently expels hydraulic fluid. By tilting the swashplate using integrated control valves, the stroke of the pistons—and thus the output displacement—can be adjusted dynamically from zero to its maximum rating. This architecture delivers outstanding power-to-weight ratios, operating efficiency up to 90% (both volumetric and mechanical), and an extended lifecycle under demanding conditions.
For global procurement managers, understanding the variant configurations of the A10V series is crucial. These pumps are highly customizable, featuring different control devices that tailor output parameters to specific industrial needs:
At Weitai Hydraulic, our engineering team works closely with OEM customers to modify shaft profiles (splined, keyed), porting configurations (flanged, threaded, rear or side-mounted), and paint systems to withstand harsh environments (marine grade, mining coatings).
The table below details standard displacement ranges, working pressures, and target application thresholds common to high-precision A10V axial piston pumps:
| Model Series | Displacement (cc/rev) | Nominal Pressure (bar) | Peak Pressure (bar) | Max Speed (rpm) | Typical Control Modules |
|---|---|---|---|---|---|
| A10VO18 / A10VSO18 | 18.0 | 280 | 350 | 3300 | DR, DFR, DFLR |
| A10VO28 / A10VSO28 | 28.0 | 280 | 350 | 3000 | DR, DFR, DFR1, DFLR |
| A10VO45 / A10VSO45 | 45.0 | 280 | 350 | 2600 | DR, DFR, DFR1, DFLR, ED, ER |
| A10VO71 / A10VSO71 | 71.0 | 280 | 350 | 2200 | DR, DFR, DFR1, DFLR, LA8D |
| A10VO100 / A10VSO100 | 100.0 | 280 | 350 | 2000 | DR, DFR, DFR1, DFLR, LA8D |
| A10VO140 / A10VSO140 | 140.0 | 280 | 350 | 1800 | DR, DFR, DFR1, DFLR, LA8D |
Modern heavy equipment manufacturing demands more than just component assembly; it requires absolute reliability, precision engineering, and agile supply networks. As the secretary company of the Shandong Hydraulic Association (SDHA), Weitai Hydraulic represents the vanguard of China's "Factory 4.0" initiative. Our state-of-the-art facilities integrate CNC automated machining centers, temperature-controlled robotic assembly bays, and digitalized testing labs.
By implementing rigorous quality control protocols across the entire production sequence, we ensure that every pump leaving our facility matches or exceeds OEM specifications. Our raw material suppliers hold CE, RoHS, CSA, and UL certificates, which ensures metallurgical purity—a critical factor for parts like cylinder blocks, swashplates, and pistons that operate under high shear stress and pressures reaching 350 bar.
Furthermore, our production model mitigates global logistics risks. By retaining strategic reserves of premium casting parts and maintaining highly flexible production lines, we provide shorter lead times than traditional Western suppliers. This structural resilience allows Weitai to support massive machinery operations worldwide, ensuring key OEM manufacturers avoid line stoppages and downtime.
Take a look inside our high-precision machining workshops, clean assembly rooms, testing cells, and global marketing team spaces.
Variable piston pumps are heavily integrated into both mobile machinery and heavy industrial settings. Understanding these local environments enables Weitai to fine-tune our design modifications for optimal field performance:
The A10V pump series acts as the main hydraulic power unit for track excavators, skid steer loaders, and crawler systems. Weitai's systems are widely utilized by international construction brands including SANY, XCMG, and SDLG. Dynamic load-sensing (DFR/DFR1 controls) allows machinery to balance speed and raw force, adjusting system flow based on ground resistance during digging or transport maneuvers.
For hydraulic presses, shear machines, and injection molding machinery, consistent high-pressure hold cycles are crucial. Industrial versions like the A10VSO series provide pressure-controlled (DR) operations where the pump destrokest to nominal flow while maintaining pressure, reducing energy consumption and fluid heating during clamping cycles.
Corrosive marine environments require robust external coatings and specialized sealing systems. Weitai provides customized housing designs featuring marine-grade NBR/FKM seals and custom corrosion-resistant paint systems designed to withstand continuous exposure to salt water spray and extreme temperature ranges.
Weitai Hydraulic is one of China’s leading hydraulic suppliers, the earliest hydraulic enterprises which specializing in export business for decades. We are committed to providing excellent hydraulic products and services to both businesses and final users worldwide.
At the first beginning, we are OEM factory, and have gradually developed into a comprehensive company integrating production, trade and investment. Hydraulic motors are one of our main products. In addition to our own hydraulic factories, we are a shareholder of a high-quality hydraulic motor manufacturer. Our factories are all ISO certified and our material suppliers have all obtained CE, RoHS, CSA and UL certificates. We can design and customize according to drawings to meet the diverse needs of customers.
The Motor products include but are not limited to travel motors, swing motors and wheel-motors. Our motors have an advanced design structure and provide high volume efficiency, high strength and good stability which far superior than our competitors’ motors. This resulted in the demand and production of over 40,000 Weitai travel motors in 2019. Weitai travel motors are now even included in the production line for excavator manufacturers such as SANY, XCMG and SDLG.
As the Shandong Hydraulic Association’s (SDHA) Secretary Company and the comprehensive export platform of provincial hydraulic organization, Weitai is proud to represent China and share our high quality hydraulic products with the world. Weitai Hydraulic has already been elected to be the 2018 Annual Outstanding Enterprise at the Annual Conference and Intelligent Manufacturing Forum of Shandong Equipment Manufacturing Association, and we endeavor to consistently build on this success.
Weitai Hydraulic regularly participates in major global heavy equipment, machinery components, and fluid power trade exhibitions to connect with our clients and showcase our latest products.
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High volumetric efficiency replacement motor matching original loader performance metrics.
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For inquiries about our variable displacement pumps, final drive motors, or customized OEM development programs, please submit your requirements. Our technical team responds within 24 hours.
Request a QuoteFind engineering explanations, troubleshooting guidelines, and trade procurement answers regarding the A10V variable piston pump family.
Efficiency loss in axial piston pumps is typically categorized into volumetric and mechanical-hydraulic losses. Volumetric loss occurs due to internal leakage between moving parts (e.g., pistons to cylinder block, cylinder block to distribution plate, and shoe to swashplate). This leakage increases as hydraulic oil loses viscosity under high operating temperatures. Mechanical losses stem from mechanical friction at the bearing points, seal interfaces, and sliding surfaces. Regular maintenance of oil viscosity and dynamic filtration limits these losses.
A Load-Sensing system uses a pilot line to monitor pressure drop across an adjustable throttle valve located downstream of the pump. The DFR controller continuously adjusts the pump's displacement to maintain a constant differential pressure (usually around 14 to 20 bar) across this throttle. This ensures the pump output only matches the actual pressure and flow required by the actuator, eliminating the energy losses associated with dumping excess high-pressure fluid over a primary relief valve.
Yes. Our OEM A10V series pumps are designed to strictly adhere to ISO mounting flanges, shaft dimensions, and port threads. They are functional, dimensional drop-in replacements for standard A10VO and A10VSO piston pumps. We also support custom engineering requests to modify mounting configurations for specific retrofits or custom agricultural/construction machinery setups.
Axial piston pumps operate with clearances under 10 micrometers between crucial sliding interfaces. Contaminants in the fluid can cause rapid wear, score mating surfaces, and cause stickiness in the control spool. We recommend maintaining fluid cleanliness of at least ISO 4406 Class 20/18/15. Suction lines should use at least 150-mesh strainers, while high-pressure lines should incorporate 10-micron absolute filters.
Standard replacement configurations are kept in stock for immediate shipment. For customized OEM shafts, special housing ports, or specific pilot control valving setups, our manufacturing timeframe varies from 15 to 35 days depending on material specifications and cast housing availability. Contact our sales department to receive a firm schedule based on your engineering drawings.
Explore our broader range of heavy-duty travel motors, wheel drives, and final drives configured to complement high-flow hydraulic pump power sources.
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Weitai Hydraulic
