Rexroth A20VLO260 axial piston double hydraulic pump

The A20VLO260 is a variable-displacement axial piston pump built in a "double" (tandem) configuration, meaning two axial piston rotating groups — each in swashplate design — are mounted back-to-back and driven off a single input shaft. It's part of Rexroth's A20VO/A20VLO series, engineered for open-circuit hydrostatic drives.

How the Double Pump Configuration Works

Two Circuits, One Drive Shaft

Think of the A20VLO260 as two pumps sharing a single day job. Both rotating groups sit on the same input shaft, so one diesel engine or PTO can power two entirely separate hydraulic circuits — say, the boom function on a crane and the slewing/travel function — without needing two separate drive takeoffs.

Variable Displacement and Control

Unlike a fixed-displacement gear pump, the swashplate angle on each rotating group can change in response to load demand. This means:

Flow output matches actual system demand rather than running at full displacement continuously

Engine horsepower is conserved, since the pump only draws the power it needs

Heat generation drops significantly compared to a fixed pump paired with a pressure-relief bypass

Common control options on the A20VO/A20VLO platform include pressure control (DR), power control (LR), load-sensing (LS), and electric proportional control (EP), often combined across the two pump sections depending on what each downstream circuit needs.

Typical Applications

The A20VLO260's displacement, pressure range, and through-drive flexibility make it a natural fit for heavy mobile equipment rather than stationary industrial presses. You'll typically find it in:

Concrete and Construction Machinery

Truck-mounted concrete pumps and mixers use the double-pump layout to separate placing-boom hydraulics from pumping-cylinder hydraulics on one engine.

Mobile Cranes and Lifting Equipment

Separate circuits for hoist, luffing, and slewing functions benefit from independent flow control without duplicating the drive train.

Wheel Loaders and Earthmoving Equipment

Steering and implement circuits can run independently, each tuned to its own load-sensing or pressure profile.

Drilling and Well-Service Rigs

High-pressure, high-flow demands in remote or harsh environments benefit from the pump's sealed, reinforced-bearing construction and optional explosion-proof housings for oil & gas use.

Installation and Fluid Considerations

Fluid Cleanliness

Axial piston pumps are precision components — piston-to-bore clearances are measured in microns. Contaminated fluid is the single most common cause of premature wear on the swashplate and piston shoes. Maintain oil cleanliness to Rexroth's specified ISO 4406 targets and size filtration for the duty cycle, not just the tank volume.

Thermal Management

Continuous high-power circuits (concrete pumping, drilling) generate sustained heat. Undersized cooling leads to viscosity breakdown, which in turn accelerates internal leakage and shortens seal life. A properly sized cooler isn't optional on continuous-duty installations.

Pressure Transients

Because these pumps operate at nominal pressures up to 350 bar, pressure spikes from cylinder shock-loading or rapid valve closure can be damaging over time. Accumulators, pressure dampeners, and correctly set relief valves protect the rotating group from cumulative fatigue damage that isn't always obvious until a catastrophic failure occurs.

Shaft and Mounting Configuration

The A20VLO260 is available with different shaft ends (splined, parallel keyed) and mounting flanges (SAE, ISO). Getting this wrong at order time is one of the most common — and most expensive — mistakes in a new-build or retrofit, since a mismatched flange or shaft can mean weeks of delay waiting on the correct part.

For more information on the A20VLO260 hydraulic pump, please visit https://www.baolilaihydraulic.com/product/.

Specifications

Selection Table

Q1: What's the difference between A20VO and A20VLO?

A1: Both share the same core double-pump platform; the "L" designation typically relates to specific control, flange, or shaft variants within the family rather than a fundamentally different pump architecture. Always confirm the exact model code against Rexroth's current catalog, since suffixes change over product generations.

Q2: How do I identify the exact control type on my unit?

A2: Check the full model code stamped on the pump's nameplate (for example, a string like A20VO260LE2DC/…) against Rexroth's RE datasheet for that series, since the suffixes encode control type, shaft, rotation, and seal material.

Q3:How to purchase an A20VLO260 hydraulic pump?

A3:You can visit https://www.baolilaihydraulic.com/contact/ to contact us and purchase our products through various methods.

Q4:What is the price and delivery time of the A20VLO260 hydraulic pump?

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