Rexroth A8VO200 Axial piston variable hydrualic pump

At the heart of the A8VO200 pump, a cylinder block rotates, carrying an array of pistons arranged axially around the drive shaft. Each piston shoe bears against a stationary, angled swashplate. As the block rotates, the fixed angle of the swashplate forces the pistons to reciprocate in and out of their bores. This mechanical symphony creates the pumping action: the retracting piston draws hydraulic fluid from the inlet port (suction phase), and the extending piston pressurizes and expels it through the outlet port (discharge phase). The genius lies in the manipulable nature of this critical component.

Engineered for intense duty, the A8VO200 operates reliably at continuous pressures up to 350 bar (~5,075 psi), with even higher peak capabilities. This allows it to deliver tremendous force from a compact footprint—a critical advantage in mobile hydraulic applications like excavators and forest harvesters where space and weight are severely constrained. This high power density means designers can simplify systems, often using one A8VO200 to perform tasks that previously required multiple pumps.

The pump’s versatility is unlocked through its suite of swappable control options, allowing it to be perfectly tuned for any application:
• Pressure Control (LR/HD): Functions as a smart pressure limiter. It automatically de-strokes the pump when a set system pressure is reached, ideal for maintaining standby pressure or preventing overload in press molding applications.

• Load-Sensing Control (LV): The pinnacle of efficiency. This control maintains a constant pressure margin (Δp) above the load, adjusting pump flow instantly to match actuator demand. This ensures the system only consumes the energy needed for the work, eliminating the wasteful throttling losses common in fixed-pump systems.

• Torque Control (DA): Protects the prime mover. By limiting pump displacement based on available input torque (e.g., from a diesel engine), it prevents engine stall in construction equipment, allowing optimal use of available horsepower.

Robust Construction for Maximum Uptime & Reliability

Rexroth engineering prioritizes longevity. Critical components like the cylinder block, pistons, and slippers are manufactured with micron-level precision. Features like hydrostatically balanced rotating groups and optimized lubrication grooves minimize metal-to-metal contact and wear. The result is a pump built to endure pressure spikes, continuous duty cycles, and harsh environmental contaminants, ensuring maximum operational uptime and a lower total cost of ownership.

Real-World Application Examples:

• Injection Molding Machines: Here, the A8VO200 manages the complex, multi-phase cycle with precision. It delivers high flow for fast mold closing at low pressure, then seamlessly provides extreme pressure for clamping and injection. This precise control is critical for repeatable part quality, short cycle times, and slashing energy costs during non-peak phases.

• Forestry Cranes & Harvesters: Operating on unstable terrain, machinery like forwarders demands exceptionally smooth and responsive hydraulic control. The A8VO200 with Load-Sensing (LV) control provides the operator with precise, proportional control over grapple and crane functions, enabling safe and efficient handling of heavy logs in challenging conditions.

• Marine & Offshore Deck Machinery: On an offshore supply vessel, winches and cranes face constant load swings and a corrosive saltwater environment. The A8VO200’s robust construction resists corrosion, while its variable displacement capability allows the vessel’s auxiliary engines to run at optimal, fuel-efficient speeds, adapting pump output to the immediate load rather than running at constant maximum output.

For more information on the A8VO200 hydraulic pump, please visit https://www.baolilaihydraulic.com/.

Specifications

Selection Table

Q1: What are the most critical maintenance aspects?

A1: Beyond using clean, high-quality hydraulic fluid to the correct specification (e.g., HLP 46 or equivalent), the most critical routine task is monitoring and maintaining the case drain line. This low-pressure line, which returns internal leakage oil to the tank, must be kept free of restrictions. A blocked case drain can cause catastrophic pump failure due to excessive case pressure.

Q2: How does variable displacement save energy compared to a fixed pump?

A2:A fixed displacement pump, paired with a pressure relief valve, produces constant flow. Excess flow not needed by the system is dumped over the relief valve at full system pressure, generating wasted power (heat). A variable pump like the A8VO200 reduces its displacement to match demand, eliminating this wasteful throttling and significantly reducing energy input and heat generation.

Q3:How to purchase an A8VO200 hydraulic pump?

A3:You can click on the right sidebar or the contact information in the top bar to contact us to purchase. You can do so via email, form, WeChat, WhatsApp, or other methods.

Q4:What is the price and delivery time of the A8VO200 hydraulic pump?

A4:The specific price and delivery time will be provided based on the specific model you provide.