Rexroth A10VSO A10VO Series Piston Pump | A10VO60DFR1 A10VSO100DFR | Variable Displacement Pump

The A10VSO and A10VO Series axial piston variable displacement pumps from Chengyuan Hydraulic are flagship power components fully compatible with Rexroth engineering standards. Designed for open-circuit hydraulic systems, this series covers displacements from 10 to 140 cc (e.g., A10VO60, A10VSO100). The A10VSO is renowned for its quiet operation, long-life bearing design, and a vast array of control options (Pressure, Flow, and Power control), making it the gold standard for machine tools, presses, and mobile machinery. Every pump from Chengyuan undergoes 100% simulated full-load condition testing to ensure volumetric efficiency and response times match OEM standards, guaranteeing 100% original-place interchangeability.

Technical Specifications :

• Core Model Series: A10VSO/A10VO Series 31, 52, 53, 63

• Displacement: 60 cm³/rev, 100 cm³/rev (model specific)

• Nominal Pressure: 280 bar (28 MPa)

• Peak Pressure: 350 bar (35 MPa)

• Control Options: DFR1 (Pressure/Flow), DR (Pressure), DFLR (Power Control)

• Seal Material: FKM (Viton, compliant with VUC codes)

• Rotation: R (Clockwise) / L (Counter-Clockwise)

• Mounting Standard: ISO or SAE standard flanges

Key Technical Advantages:

• Highly Modular Control Logic: Supporting flexible control combinations such as the DFR1. The pump adjusts displacement precisely according to load requirements, delivering only the necessary flow. This significantly reduces energy consumption and system heat, extending overall machine life.

• Optimized Swashplate Response: Featuring precision-ground slipper and swashplate interfaces combined with robust return spring designs. This ensures lightning-fast displacement response, meeting the high-precision requirements of CNC machinery for both pressure buildup and flow cut-off.

• Low Noise & Anti-Vibration Structure: The housing is optimized via flow and acoustic simulations to suppress fluid pulsation. Combined with oversized tapered roller bearings, noise levels remain significantly lower than industry standards even under 280 bar continuous operation.

• Powerful Through-Drive Capability: Options like the S2344 through-drive allow for the tandem mounting of additional piston or gear pumps. This compact design simplifies multi-circuit hydraulic layouts and saves valuable mechanical installation space.

Application Areas:

• Industrial Manufacturing: Injection molding machines, metal shears, and hydraulic brakes.

• Mobile Machinery: Concrete pump trucks, harvesters, and auxiliary power circuits for heavy-duty cranes.

• Machine Tool Industry: Servo-hydraulic stations and spindle lubrication systems.

Expert Maintenance Tips:

• Pre-Start Priming & Bleeding: Dry operation is fatal to piston pumps. Before the initial start, fill the pump housing with clean hydraulic oil through the highest case drain port. “Jog” the motor several times to ensure proper suction before continuous running.

• Case Drain Pressure Management: The drain line must lead directly back to the tank and have a diameter large enough to keep case pressure below 0.5 bar. Excessive backpressure will blow the shaft seal and may lead to internal component failure.

• Oil Quality Monitoring: Due to the extremely tight internal clearances of the A10VSO, we recommend a precision filtration rating of 10μm or better and regular NAS grade testing of the hydraulic fluid.