Working Principle of Variable Displacement Piston Pump
Learn how variable displacement piston pumps work, boost efficiency to 94%, and master flow control. Full engi…
| Model | A8VO80 |
| Type | Bent-Axis Variable Double Piston Pump |
| Circuit | Open Circuit |
| Pressure | High Pressure Performance |
| Features | High Efficiency & Low Noise |
| Service | OEM & ODM Available |
| Options | Custom Shaft, Flange & Port |
| Application | Construction & Industrial Machinery |
Sourcing a reliable A8VO80 hydraulic variable double piston pump supplier is one of the most consequential decisions in your hydraulic procurement cycle. Whether you're replacing worn Rexroth-style A8VO80 variable displacement pumps on excavator fleets or specifying OEM components for new builds, the pump you choose directly impacts uptime, warranty claims, and total cost of ownership. At Olive Branch Hydraulics, we manufacture the A8VO80 variable double piston pump under ISO 9001 protocols at our Hebei, China facility — combining precision machining, automated assembly, and 100% pre-shipment testing to deliver a Rexroth A8VO80 replacement pump that meets or exceeds OEM tolerances.
The A8VO80 variable double piston pump is engineered for medium-to-heavy-duty hydraulic circuits where pressure stability, volumetric efficiency, and mechanical longevity are non-negotiable. As a factory-direct A8VO80 pump OEM manufacturer, Olive Branch Hydraulics produces this unit as a form-fit-function equivalent to widely-specified Rexroth A8VO80 variable displacement pumps — giving procurement managers a validated cross-reference option without the OEM markup or the extended lead times associated with European supply chains.
Our A8VO80 is built on a bent-axis double axial piston architecture with variable displacement control, delivering smooth flow modulation across the full RPM range. The compact envelope (SAE-standard mounting flanges and shaft profiles) allows drop-in replacement on excavators in the 8–15 ton class, wheel loaders, drilling rigs, and stationary power units. Every housing is CNC-machined from ductile cast iron, then honed and lapped to sub-micron surface tolerances before assembly.
For buyers evaluating A8VO80 variable displacement pump price against long-term reliability, our value proposition is straightforward: OEM-grade metallurgy, hardened rotating groups, and factory-direct pricing without distributor layers. We ship to Europe, North America, the Middle East, and Southeast Asia, with documented performance data supporting every unit that leaves our testing bay.
The A8VO80's engineering profile translates directly into measurable operational gains for equipment owners and OEM integrators. Below is a functional-to-benefit breakdown that procurement teams can use during technical evaluation.
For procurement managers weighing supplier options, these features convert into three bottom-line outcomes: lower warranty claim rates, predictable maintenance intervals, and reduced total landed cost per operating hour.
The table identifies configuration information requiring confirmation against the complete A8VO80 ordering code and series. It does not represent measured performance of every supplied pump. Confirm pressure, speed, shaft, ports, regulator and weight before ordering; maximum limits do not apply simultaneously.
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Maximum Displacement per Rotary Group | 80 | cc/rev | Two groups, each 0–80 cm³/rev |
| Nominal Pressure | 350 | bar | Continuous rating |
| Peak Pressure | 400 | bar | Intermittent, < 6 sec |
| Maximum Speed | 2,600 | RPM | At full displacement |
| Minimum Speed | 600 | RPM | Self-priming threshold |
| Volumetric Efficiency | ≥ 94 | % | At rated pressure and speed |
| Overall Efficiency | ≥ 90 | % | Mechanical + volumetric |
| Mounting Flange | SAE-B / SAE-C | — | Two-bolt / four-bolt available |
| Shaft Type | Splined / Keyed | — | OEM shaft profiles supported |
| Port Configuration | SAE J518 | — | Custom P/T ports available |
| Fluid Viscosity Range | 10–1,000 | cSt | Optimal: 20–100 cSt |
| Fluid Temperature Range | -20 to +90 | °C | Nitrile seals standard |
| Filtration Requirement | ISO 4406 19/17/14 | — | Or cleaner |
| Weight | ~ 28 | kg | Dry, standard configuration |
| Rotation | CW / CCW | — | Specify at order |
The A8VO80 operates on a bent-axis double piston principle — a design chosen for its ability to modulate flow output without changing rotational speed. Understanding the internal mechanics helps engineering teams specify the correct control option for their circuit.
The A8VO80 has two bent-axis piston rotary groups. Varying the displacement controls each circuit’s theoretical flow, which is displacement multiplied by shaft speed. Nominal maximum displacement is 80 cm³/rev per group; the assembly is not a single 80 cm³/rev gear pump.
This variable-displacement behavior is what allows the A8VO80 to match flow to demand in real time. A pressure compensator senses downstream circuit pressure and destrokes the pump when the system reaches its set threshold, protecting components and eliminating wasted horsepower. Load-sensing and torque-limiting control options extend this logic further, enabling multi-function excavator work cycles where boom, arm, and swing circuits compete for flow.
Precision matters at every interface. Our valve plate, cylinder block, and piston shoes are lapped to optical flatness tolerances, keeping internal leakage below 3% at rated pressure — the foundation of the pump's 94%+ volumetric efficiency.
The A8VO80 variable double piston pump for excavator platforms is our most requested configuration, but the pump's flow envelope and pressure capability make it well-suited to a broad range of mobile and industrial hydraulic systems. Buyers across our target markets in Europe, North America, the Middle East, and Southeast Asia deploy the A8VO80 in the following applications.
Compatibility extends to Rexroth A8V-series platforms as well as equivalent designs from other major OEMs. For non-standard applications, our engineering team can review your circuit schematic, load profile, and duty cycle before recommending the correct A8VO80 variant and control option.
Quality control at Olive Branch Hydraulics is not a sampling exercise. Every A8VO80 leaves our facility having passed 100% pre-shipment inspection at our in-house testing center. No exceptions. This policy is central to why procurement managers choose us as their A8VO80 hydraulic variable double piston pump supplier for high-volume programs where warranty exposure is a real cost.
Quality control operates across three enforcement stages:
Every pump ships with a serialized test report documenting its measured performance. Under ISO 9001 protocols, these records are archived for full traceability across casting batch, machining line, assembly team, and test bench operator — a level of accountability that reduces warranty disputes and supports downstream regulatory documentation for our buyers in EU markets.
As a dedicated A8VO80 pump OEM manufacturer, we structure our operation around customization rather than off-the-shelf commodity supply. Distributors, private-label brands, and equipment OEMs work directly with our engineering team to specify pumps that match their exact circuit, branding, and packaging requirements.
Common OEM customization options include:
The customization workflow is straightforward: send us your drawing, sample, or application data. We return a technical proposal and quotation within 3–5 working days. Sample units for validation are typically produced in 20–30 days, followed by joint approval before mass production release. Factory-direct pricing means no distributor margin, and OEM buyers gain full transparency on lead time, cost structure, and production scheduling.
For procurement teams evaluating A8VO80 variable displacement pump price against delivery commitments, our commercial terms are structured for both trial buyers and high-volume programs.
| Order Type | MOQ | Lead Time | Pricing Tier |
|---|---|---|---|
| Sample / Trial Order | 1–5 units | 15–20 days | Standard list |
| Standard Bulk Order | 20 units | 25–35 days | Volume discount |
| OEM Program Order | 50+ units | 35–45 days | Preferred OEM pricing |
| Annual Framework | 200+ units/year | Scheduled release | Contract pricing |
Shipping terms include EXW, FOB Tianjin/Qingdao, CIF, and DDP to major ports across Europe, North America, the Middle East, and Southeast Asia. Payment terms are flexible for repeat buyers, with T/T, L/C, and trade assurance options available. For urgent replacement requirements, expedited production slots can be arranged on request.
Ready to request a quote? Send us your target specification, annual volume, and destination port. Our sales engineering team will return a formal quotation with technical drawings, test data samples, and a confirmed production schedule within 24 hours.
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