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A75 Compost Turner

World’s. Largest. Turner. Period!

Maximum Capacity. Built to Last.

The BACKHUS® A75 is engineered for operations that demand the highest output and the toughest construction. Capable of handling windrows up to 24 feet 6 inches wide and 11 feet tall, the A75 is one of the largest windrow turners available anywhere.

At the heart of the machine is a 71-inch diameter drum with high-torque, armored drum tools that reach the full depth of the windrow on every pass, delivering thorough homogenization from top to bottom. The result is consistent, high-quality compost produced in fewer turns and less time.

Intelligent electronic control systems continuously monitor and adjust to compost conditions, maximizing throughput without requiring constant operator intervention. Detailed performance feedback keeps operators informed of every aspect of machine operation, making the A75 as easy to manage as it is powerful to run.

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Product Features

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Easy Access

Better compost, in fewer turns, in less time. That’s the BACKHUS advantage!

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INTUITIVE CONTROLS

Control operating speed and steering with one hand, and access critical functions via “top hat” push buttons on the intuitive joystick control.

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PANORAMIC CABIN

The panoramic cabin and rearview camera provide clear visibility of the turning environment.

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EFFICIENT ENGINE

BACKHUS makes the most efficient turners in the industry, and the standard diesel engine with turbocharger allows for maximum power.

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HYDRAULIC TAILGATE

This operator-controlled feature manipulates the throwing of material and allows for the shaping of windrows or help with mixing.

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POWERFUL DRIVETRAIN

The robust hydraulics system ensures the drum and drive handle the toughest material environments.

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TRACK CLEARERS/PLOWS

Operating independently of the frame and drum position, the clearers are very easily controlled to provide toe-to-toe windrow placement. The one-touch ‘float’ feature maintains constant contact with the pad.

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ARMORED DRUM TOOLS

The drum tools are coated with an abrasion-resistant material for maximum tool life.

A75 Compost Turner Demonstration

Interested in the BACKHUS A75 Compost Turner? Contact us to arrange an on-site demonstration at your facility, running your material, to see just how good it is!

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A cut-out image of a BACKHUS A75 compost turner shows its large black steel drum and enclosed operator cab.

Case Studies

Built on a Mission: How MyGreen Michigan is Turning Packaged Food Waste into Finished Compost

June 8, 2026

Company Overview Founded in 2014, MyGreen Michigan is a food waste diversion company serving the southern half of Lower Michigan. The company collects organic material from restaurants, commercial kitchens, hospitality…

From One Trommel to Three: How Doppstadt Helped Hansen’s Tree Service Scale

May 27, 2026

Jeff Hansen started trimming trees on Saturdays in 1988 so his wife could stay home with their children. Word spread. The side work became regular. Eventually, with his employer’s blessing,…

Case Study Update: Catalyst BioAmendments

December 29, 2025

When we first featured Catalyst BioAmendments in 2021, the Nevada City, CA company was already known for producing exceptionally high-quality, microbe-focused compost and for challenging assumptions about what compost at…