Brand Logos_Backhus

A45 Compost Turner

The Next Step Of Entry Level Turner.

More Capacity. Same Proven Design.

The BACKHUS® A45 builds on the accessible, operator-friendly design of the A38 and steps up capacity for operations ready to handle larger windrows and higher throughput. With the same cabin comfort, intuitive controls, and fuel-efficient engineering, the A45 is a natural next step for composters looking to grow.

Powered by a Cummins B6 diesel engine producing 255 horsepower and EPA Tier V certified, the A45 processes up to 3,925 cubic yards per hour and handles windrows up to 14 feet 9 inches wide and 7 feet 7 inches tall. A 47-inch diameter drum with hydraulically reversible operation under load ensures thorough homogenization on every pass. The machine is available on tracks or wheels to suit your site conditions.

Compact enough to transport at 8 feet 5 inches wide and just over 10 feet tall, the A45 delivers mid-range capacity without sacrificing the ease of operation and maintainability that BACKHUS machines are known for.

Product Features

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Easy Access

All critical components and functions of the machine are easily accessible for routine maintenance and service.

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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.

A45 Compost Turner Demonstration

Interested in the BACKHUS A45 Compost Turner? Contact us to arrange an on-site demonstration at your facility, running your material, to see just how good it is!

A45

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…