Rexroth A6VM A2FM bent axis hydraulic motors for the Manitowoc Crane 04162093 2212627 2314537 3329835 81025167 A03380

A bent axis motor is an axial piston motor in which the cylinder block (with its pistons) sits at an angle to the drive shaft. Pressurized oil pushes the pistons against the angled shaft flange, and that force is converted into rotation.

Bent axis designs are known for a few traits that matter in lifting work:

High efficiency, both volumetric and mechanical, which means less heat and better use of engine power

High pressure capability, with Rexroth's A-series units commonly rated around 400 bar nominal and 450 bar peak (check the datasheet for your series and size)

Robust shaft bearings that tolerate radial and axial loads

Good low-speed torque control, important for precise load positioning

Rexroth A2FM: The Fixed Displacement Workhorse

The A2FM is a fixed displacement bent axis motor. Its displacement can't change, so output speed depends on flow and torque depends on pressure. Simple and predictable.

Where fixed displacement makes sense

Drives with a defined speed range and a controlled flow supply

Applications where simplicity and cost matter more than speed-shifting

Systems where the hydraulic pump (not the motor) handles speed control

Rexroth A6VM: Variable Displacement Flexibility

The A6VM adds the ability to change displacement, usually by swiveling the cylinder block angle via a control unit. A larger swivel angle means more displacement (higher torque, lower speed); a smaller angle means less displacement (lower torque, higher speed).

Common control options

Rexroth offers several control types for the A6VM family, including hydraulic (pilot pressure) controls, electrical proportional controls, and automatic pressure-dependent controls. Which one is fitted affects both performance and troubleshooting.

Where These Motors Fit in Manitowoc Crane Systems

Manitowoc's lineup includes lattice-boom crawler cranes, Grove all-terrain and rough-terrain cranes, and Potain tower cranes. Across these, hydraulic motors typically drive functions such as:

Winch (hoist) drives

Hoist motors face the harshest duty: heavy loads, frequent starts and stops, and brake integration. Many winch systems pair a bent axis motor with a planetary gearbox and a spring-applied, hydraulically released brake.

Swing (slew) drives

The motor drives a slew gearbox that rotates the upperstructure. Here, smooth acceleration and deceleration matter as much as raw torque, since load swing is a real safety concern.

Travel drives

On crawler cranes, each track is driven by a hydraulic motor and gearbox. Variable displacement motors are attractive here because of the wide speed/torque demand.

Which of these functions uses an A6VM, an A2FM or another motor type is model-specific. The parts manual and the motor nameplate are the authority.

For more brands and equipment models, please visit https://www.baolilaihydraulic.com/brand/

Q1: How do I know which motor my crane uses?

A1: Check the motor's nameplate and the crane's parts manual for the specific model and serial number. Don't rely on model family alone.

Q2: How long does a bent axis motor last?

A2: There's no universal figure. Life depends heavily on oil cleanliness, duty cycle, operating pressure, and temperature. Well-maintained units in clean systems can run for many thousands of hours.

Q3: What is the price and delivery time of the Rexroth A2FM/A6VM motor for the Manitowoc Crane?

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

Q4: How do I purchase a Rexroth A2FM/A6VM motor for the Manitowoc Crane?

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