Bosch Rexroth A6VM bent-axis hydraulic motor for Hammel equipment 3020100-00009 3020100-00016 3020100-00031

The A6VM is a bent-axis, variable-displacement axial piston motor manufactured by Bosch Rexroth, one of the most established names in mobile and industrial hydraulics. Unlike swash-plate (in-line) piston motors, the A6VM uses a bent-axis architecture, where the cylinder block sits at an angle to the drive shaft. This design is inherently more robust under shock loading and better suited to the start-stop, load-reversing conditions typical of shredding, crushing, and winch applications.

Depending on the series (60, 63, 65, or 71), the A6VM is available across a wide displacement range and is rated for a nominal pressure of 400 bar and a maximum pressure of 450 bar on smaller frame sizes, with larger frame sizes rated around 350 bar nominal and 400 bar maximum. That kind of pressure headroom matters enormously in shredder duty, where torque spikes happen every time the rotor bites into a tire bead, a rebar-laced concrete chunk, or a seized engine block.

Why Hammel Uses This Type of Motor

Hammel Recyclingtechnik GmbH built its reputation on a distinctive design: two slow-moving, interlocking shredding shafts that rotate at speeds up to roughly 43 rpm. That "two-shaft principle" is what lets a Hammel primary shredder swallow oversized, mixed, and contaminated material — root stumps, whole car bodies, mattresses, tires — without the jamming problems that plague high-speed single-rotor designs.

Producing that kind of torque at such low shaft speed is exactly the job a bent-axis motor like the A6VM was built for. A handful of reasons this pairing shows up so often in the field:

1. High torque density at low RPM — the shredding shafts don't need to spin fast; they need to spin with enormous, sustained torque, which plays directly to the strengths of a large-frame bent-axis motor.

2. Shock-load survivability — every time a shaft hits an unyielding object, the hydraulic circuit absorbs a pressure spike. The A6VM's construction and available counterbalance valving are designed around exactly that kind of load.

3. Reversibility — Hammel shafts routinely reverse direction to clear jams. Variable-displacement bent-axis motors handle bidirectional operation and frequent load reversal without the wear penalties simpler motor types would suffer.

4. Serviceability in the field — because the A6VM is a widely used, well-documented Rexroth product line, parts, seal kits, and rebuild expertise are easier to source than for a proprietary or boutique motor, which matters for a shredder that might be working a remote demolition or recycling site.

Typical Application Points on a Hammel Machine

Primary shredder rotor/shaft drive — the main torque-producing circuit, usually the largest-frame A6VM on the machine

Conveyor and discharge belt drives — smaller-displacement motors handling steady, lower-torque loads

Auxiliary functions — hopper rams, screen changes, and magnetic separator drives on models so equipped

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Q1: What causes premature wear on shredder hydraulic motors in general?

A1: Contaminated fluid is the single biggest driver of premature wear across nearly all high-pressure piston motors, closely followed by operating past-recommended pressure or temperature limits and running with degraded case-drain flow that isn't caught early.

Q2: Does the A6VM work in both open and closed hydraulic circuits?

A2: Yes. The motor family is designed to support both open-circuit and closed-circuit applications, which is part of why it shows up across such a wide range of mobile and industrial equipment beyond shredders, including winches and travel drives.

Q3:What is the price and delivery time of the Rexroth A6VM motor for the Hammel 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 Hammel equipment?

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