Rexroth A6VM variable hydraulic motor for the O&K Antriebstechnik Engineering Equipment 2460061 864101 864095

The A6VM is a variable displacement axial piston motor manufactured by Bosch Rexroth, built around a bent-axis design rather than the swash-plate layout used in many of Rexroth's pump counterparts (like the A4VG). It's designed for closed-circuit hydrostatic transmissions — the kind of system you find in travel drives, winches, and rotating drives on mobile construction and material-handling equipment.

How the A6VM Fits Into O&K Antriebstechnik Engineering

O&K Antriebstechnik — descended from the drivetrain engineering lineage of the original Orenstein & Koppel machine-building tradition — specializes in designing and integrating drive systems for heavy equipment: excavators, mining machines, port equipment, and specialized construction rigs. Their engineering philosophy has always centered on matching component selection precisely to duty cycle, rather than over-specifying for a "worst case" that rarely occurs.

The A6VM slots into this philosophy well for a few concrete reasons:

Closed-circuit compatibility. O&K drivetrains commonly run closed-loop hydrostatic circuits for travel and slew functions, where oil recirculates between pump and motor rather than returning to a tank each cycle. The A6VM is purpose-built for this arrangement, including the flushing and boost-pressure provisions closed circuits require.

High-pressure tolerance. Heavy equipment travel drives regularly see pressure spikes well above nominal operating pressure during starts, stops, and direction changes. The A6VM's bent-axis architecture and bearing design are built to absorb this.

Compact power density. Undercarriage space on tracked equipment is tight. The A6VM delivers a high torque-to-package-size ratio, which matters when engineers are fitting a motor, reduction gearing, and brake assembly into a final-drive housing.

Control flexibility. Available with hydraulic, electro-hydraulic, or automotive control options, the A6VM can be tuned to match whatever control philosophy the machine's broader hydraulic system uses — important for O&K Antriebstechnik projects that often integrate components from multiple suppliers into one coherent system.

Key Technical Characteristics

While exact figures vary by frame size and control variant, the A6VM family shares a consistent set of defining characteristics worth knowing if you're reading a datasheet or a used-parts listing:

Frame sizes are typically denoted by displacement in cm³ per revolution (e.g., A6VM107, A6VM160, A6VM200), with larger numbers indicating larger displacement and, generally, larger physical size and higher torque capacity.

Displacement control options include hydraulic proportional control (DA), automotive control that responds to pressure differential for automatic torque limiting, and electro-hydraulic control for integration with electronic machine controllers.

Speed sensors and displacement feedback are available on many variants, letting a machine's electronic control unit monitor actual motor state rather than assuming it based on command signal alone — important for modern electro-hydraulic systems that need closed-loop feedback.

High-pressure relief and flushing valves are typically integrated or closely paired with the motor in closed-circuit installations, protecting the motor and circuit from pressure spikes and managing case drain temperature.

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Q1: How do I know if an A6VM needs a rebuild versus a full replacement?

A1: A rebuild is usually viable if the housing, shaft, and cylinder block are free of significant scoring or cracking and the issue traces to worn pistons, valve plates, bearings, or seals. Heavy contamination damage, shaft spline wear, or housing damage typically tips the decision toward replacement, especially when rebuild parts and labor approach a large share of new-unit cost.

Q2: Is the A6VM only used in excavators?

A2: No. While excavator travel and slew drives are common applications, the same motor family shows up in drilling rigs, winches, cranes, and other mobile equipment wherever a closed-circuit hydrostatic drive with variable torque/speed characteristics is needed.

Q3:What is the price and delivery time of the Rexroth A6VM motor for the O&K Antriebstechnik Engineering Equipment?

A3: The specific price and delivery time will depend on the equipment model or specific product model you provide.

Q4: How to purchase a Rexroth A6VM motor for the O&K Antriebstechnik Engineering Equipment?

A4:You can visit https://www.baolilaihydraulic.com/contact/ to contact us and purchase our products through various methods.