Bosch Rexroth A6VE160 plug-in plunger variable hydraulic motor

The A6VE160 belongs to Bosch Rexroth's A6VE series — a family of axial piston variable displacement motors engineered for closed-loop hydrostatic transmission systems. The "160" in the designation refers to its geometric displacement of 160 cubic centimeters per revolution (cc/rev), placing it firmly in the medium-to-large frame class.

How Variable Displacement Works in the A6VE160

The Swashplate Control Mechanism

The heart of the A6VE160's variable behavior is the servo-controlled swashplate. A dedicated servo piston, driven by pilot pressure from an electro-hydraulic proportional valve or mechanical control, rotates the swashplate between its minimum and maximum angle stops.

In practice, the control system receives a command signal — often 4–20 mA or 0–10 V from a machine controller — and adjusts the swashplate in real time. This enables the motor to continuously vary between its minimum displacement (minimum torque, maximum speed) and maximum displacement (maximum torque, minimum speed) as the application demands.

Control Variants Available

Bosch Rexroth offers the A6VE160 with several control options to suit different application requirements:

HD Control (hydraulic with proportional valve): Most common in mobile and industrial machines

EP Control (electro-proportional): Direct electrical command, ideal for CAN bus or PLC integration

DA Control (pressure-dependent automatic): Automatically adjusts displacement based on system pressure — useful for constant power regulation

LA Control (speed-dependent): Adjusts displacement as a function of motor speed, maintaining constant power

Selecting the right control variant is as important as selecting the motor itself. Mismatched controls are a common source of system instability and poor efficiency in hydrostatic transmissions.

Power Constant Operation

One of the most powerful features of variable displacement motors like the A6VE160 is their ability to operate at near-constant power across a wide speed range. By increasing displacement (and torque) as speed drops — and vice versa — the motor can extract full power from the hydraulic system, whether it's pulling at low speed or spinning freely at high speed. This is exactly the behavior required in applications like hydrostatic drives on wheel loaders, where the operator needs both high tractive force at low speed and adequate top speed for tramming between job sites.

Real-World Applications of the A6VE160

Mobile Construction Machinery

The A6VE160 is a staple in hydrostatic drive systems for mid-to-large construction equipment. A typical wheel loader application, for example, might use a pair of A6VE160 motors — one per axle — driven by a variable displacement pump. When the loader is pushing into a pile, the motors automatically go to maximum displacement, delivering peak torque. As the machine accelerates across the site, displacement reduces to maintain a controlled speed. The result is seamless, stepless power delivery that a mechanical transmission cannot match.

Industrial Presses and Injection Molding

In industrial settings, the A6VE160 drives high-force actuation systems where cycle time and energy efficiency both matter. Injection molding machines, for instance, require very high clamping force (needing max torque) during the hold phase but minimal force during mold opening and closing. A variable motor in this context reduces energy consumption by operating at appropriate displacement for each phase of the cycle — a meaningful contributor to the overall energy profile of a 24/7 production facility.

Marine and Offshore Applications

Winch drives on anchor handling vessels, and deck crane slewing drives are another common home for the A6VE160. Marine environments demand reliability under shock loads, saltwater exposure, and variable temperature — all conditions the A6VE160 is engineered to handle with appropriate sealing and surface treatment specifications. The plug-in mounting also simplifies integration into winch gearboxes, where space is at a premium.

Forestry and Agricultural Harvesting Equipment

Combine harvesters, forwarders, and skidders use the A6VE160 in header drives and track drive systems. The ability to absorb sudden load spikes — like a combine feeding into a thick stand of crop — without stalling is a direct benefit of the high-pressure rating and variable control capability.

For more information on the A6VE160 hydraulic motor, please visit https://www.baolilaihydraulic.com/product/.

Specifications

Selection Table

Q1: Can the A6VE160 be used as a pump?

A1:The A6VE series is designed and rated as a motor. While the axial piston architecture is mechanically capable of pumping if driven externally, the internal design, porting, and control systems are optimized for motoring operation. Using it as a pump would void the warranty and likely result in premature failure. Bosch Rexroth's A10V and A11V series are the appropriate pump counterparts.

Q2:What is the maximum operating temperature for the A6VE160?

A2: The standard sealing package allows continuous operation up to 90°C fluid temperature (with peak excursions to 115°C). For applications with elevated ambient temperatures, a high-temperature seal option is available. Always ensure the hydraulic system's cooling capacity is sized to maintain fluid temperature within specification.

Q3: What is the price and delivery time of the A6VE160 hydraulic motor?

A3: The specific price and delivery time will be provided based on the specific model you provide.

Q4:How to purchase an A6VE160 hydraulic motor?

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