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AK 640 High-Speed Grinder

Maximize Volume, Revenue and Profit.

Meet the new yard boss: the AK 640 high-speed grinder. Built with the same collection of innovative features as all Doppstadt® AK series high-speed grinders, the AK 640 grinder is a high-volume machine designed to produce hundreds of yards of finished material every day. The up-swing hammermill engineering converts more of your source stream into a very consistent, high-quality product, maximizing your revenue and profit.

Organics, shingles, wood waste, C&D — you can grow your business on the back of the AK 640.

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Product Features

Product-Features_Hinged-Radiator

Hinged Radiator

The hinged radiator is easily accessible and includes an automatic reversing fan.

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Feed Roll

A reversible feed roll ensures material is consistently and evenly fed to the grinding chamber.

Product-Features_Upswing-Rotor

Upswing Rotor

The large 2.5-ton rotor with easily replaceable tips grinds the material. Extra contaminant protection is provided by the free-swinging design.

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One-Piece Sizing Screen

Mesh screens from 1″ – 16″ can be easily replaced in 10 minutes or less, allowing for quick product sizing changes.

Product-Features_Rear-Conveyor

Rear Conveyor

Material is discharged via rear conveyor. Add an optional magnetic pulley or overband magnet to remove ferrous metals.

Product-Features_Large-Accesss-Doors

Large Access Doors

Large maintenance doors provide easy access to all critical components and functions of the machine.

Product-Features_Scraper-Floor

Scraper Floor

The patented, load-sensing scraper floor ensures material is evenly and consistently delivered to the feed roll.

Product-Features_Remote-Control

Remote Control

All machine functions can be controlled by a wheel-loader operator using the optional 16-channel remote control.

Ak 640 Demonstration

Interested in the Doppstadt AK 640 High-Speed Grinder? Contact us to arrange an on-site demonstration at your facility, running your material, to see just how good it is!

Schedule Live Demo

Case Studies

Bonneville County Idaho: Keeping a Beautiful Area Beautiful

March 30, 2020

You would not be faulted for being unfamiliar with Bonneville County, Idaho. For most people in this country, it’s quite a bit off the beaten path. But for those lucky…

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Tremson Corporation Gets Trifecta of Benefits from Doppstadt SM Trommel

February 21, 2020

More than 50 years ago, George Tremblay Sr. founded a land clearing business an hour or so north of New York City. The Putnam County area was fast becoming an…

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The Unlikely Path to Food Waste Processing for Missouri Organic Recycling

December 2, 2018

Some businesses start with a very clear intent and steadily grow in pursuit of that single goal. Others are businesses of opportunity, identifying moments of potential and exploring the possibility…

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