Rexroth A6VM bent-axis hydraulic motor for Terex wheel loader 5364664260 5364664190 5364661975 5364661920 31940200005 402350059 5364664282

The A6VM is part of Bosch Rexroth's axial piston motor family, built on a bent-axis design rather than the swashplate design used in Rexroth's A6VE or A2FM series. In a bent-axis motor, the cylinder block and the output shaft are set at an angle to each other, and pistons transmit force along that angled axis to generate rotation.

This design is prized in mobile equipment — wheel loaders, excavators, and articulated haulers — because it offers:

Higher pressure ratings for a given size, since the piston force is transmitted more directly

A more compact, rugged package that tolerates shock loads and contamination better than many alternatives

Excellent efficiency across a wide speed range, which matters when a wheel loader is constantly shifting between creeping through a stockpile and traveling at full speed

Why Terex Wheel Loaders Use the A6VM

Terex wheel loaders (and the related Terex/Fuchs and legacy Terex-branded compact and mid-size loaders) commonly use a hydrostatic transmission rather than a torque-converter powershift transmission, particularly on smaller and mid-frame models. In that architecture, a variable displacement A4VG or A11VO pump feeds one or two A6VM motors, which drive the axles directly or through a final drive gearbox.

A few reasons this pairing shows up so often:

Precise Speed and Torque Control

Because the motor's displacement is adjustable, the machine can deliver very fine, stepless control at low travel speeds — critical for loader work like edging into a pile or spotting a bucket precisely — while still reaching acceptable travel speeds on the road.

Automotive-Style Drive Behavior

Hydrostatic drive using the A6VM lets Terex tune the loader to behave more like an automatic transmission vehicle: smooth acceleration, no clutch shifting shock, and automatic torque increase as ground resistance rises (a function of the motor's pressure-compensated displacement control).

Reduced Driveline Complexity

Replacing a torque converter, powershift gearbox, and traditional differential arrangement with a hydrostatic loop simplifies the mechanical driveline, which can reduce maintenance points and improve reliability in the right duty cycle.

Regenerative Braking Effect

The closed hydrostatic loop provides natural dynamic braking when the operator releases the travel pedal, reducing service brake wear — a meaningful benefit in loaders that cycle constantly.

How the A6VM Actually Works in the Drive Circuit

Picture the loop as a closed circuit:

1. The engine drives a variable displacement pump (often an A4VG in Rexroth's mobile hydraulics lineup).

2. The pump sends high-pressure oil to the A6VM motor's high-pressure port.

3. Oil pressure acts on the motor's pistons, generating torque on the output shaft.

4. Low-pressure return oil flows back to the pump's other port, completing the closed loop.

5. A charge pump keeps the loop topped off and replaces any leakage, while a control valve block manages displacement on both pump and motor to match torque and speed demand.

The motor's own displacement control is what lets Terex engineers program a "automotive" torque curve: as travel resistance increases (say, the loader pushes into a dense pile), the control system increases motor displacement, trading speed for torque automatically, similar to a lower gear in a mechanical transmission.

Key Technical Specifications

Exact specifications vary by frame size and model year, so always confirm against the Rexroth data sheet and Terex parts catalog for the specific machine, but the A6VM family generally spans:

Terex typically specifies a mid-frame A6VM (often in the 80–200 cm³ displacement range) for compact and mid-size wheel loaders, paired with axle-mounted planetary final drives to further multiply torque.

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Q1: What's the difference between the A6VM and Rexroth's swashplate motors?

A1: The A6VM's bent-axis design generally handles higher pressures and shock loading more effectively, offering a more compact package for a given displacement. In contrast, swashplate designs can provide packaging or cost advantages in other applications. Terex's choice reflects the demands of loader duty cycles: frequent load reversals, high torque at low speed, and exposure to harsh site conditions.

Q2: What are the early warning signs that an A6VM motor needs service?

A2: Rising case drain flow, gradual loss of travel power under load, unusual noise at operating speed, and contaminated oil samples are the most reliable early indicators — all detectable before a full performance failure occurs.

Q3:What is the price and delivery time of the Rexroth A6VM motor for the Terex wheel loader？

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 Terex wheel loader?

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