Just hammer it with a BANDIT HM6420

Since 1983, Bandit has manufactured equipment for a multitude of wood waste and recycling markets. The vision, from the beginning, was to build quality, highly productive, easy to maintain equipment providing years of dependable service. The commitment to quality, innovation and dedication has been instilled in every employee and is one of the main reasons why Bandit became an employee-owned company (ESOP) in 2018. These core values ensure each Bandit machine will leave the factory ready to exceed your expectations.

Bandit introduced its first horizontal grinder, the Model 3680, in 1995. Since then, multiple models have been engineered and manufactured featuring a unique cuttermill for processing a diverse range of material. Expanding the horizontal grinder line in 2024, Bandit introduced its first hammermill grinder, Model HM420, further enhancing its already expansive line of horizontal grinders.

The Bandit team was excited to bring this highly productive 40-inch capacity grinder to market. This machine was designed and manufactured to accommodate those grinding applications that may contain contaminants. A Caterpillar C32, 1,200-horsepower engine provides ample torque and horsepower for optimal machine performance and productivity.

The heart of the HM6420 is a 50-inch diameter by 66-inch-wide hammermill. The heavy-duty mill features a 1.75-inch drum skin custom formed from rolled plate. The drum is supported by a 7-inch main shaft constructed of alloy steel that has been ultrasonic tested. Each pocket within the drum is manufactured from high strength A-514 steel, creating a structurally sound mill for added durability and integrity. The mill is equipped with 20 carbide infused hammer inserts built to withstand the toughest materials fed into the machine. Each holder is securely attached to the mill via a patented quick change pocket system. Each holder recesses into the mill pocket, increasing durability, while a top plate covers the pocket and is held in place by six hex bolts. The hammer insert is attached to each holder by two bolts. With this set up, the mill hardware is easier and quicker to replace.

An impact detection system is standard and designed to limit damage if a contaminant is struck inside the grinding chamber. Once an impact event is detected, the grinder will idle down, open the gate, disengage the clutch and reverse the feed.

A heavy-duty slat-style infeed conveyor is standard and is extremely durable and easy to maintain. It features an impressive feed rate of up to 132 feet per minute (FPM). The direct drive conveyor generates more than 18,000 pounds of pulling power, and the large diameter direct drive feed wheel can produce more than 17,000 pounds of down pressure. These combinations allow the HM6420 to grind massive quantities of material efficiently and effectively at once.

© Bandit

Three screens help achieve the desired end product size. Ranges include 1 inch to 10-inch hole sizes and are available in modified diamond, round and hex configurations. The HM6420 can be ordered with an optional screen cradle simplifying the screen changing process. The screen cradle will hold the replacement screens, and the existing cradle can be pulled from the machine and swapped with a new cradle holding the new desired screens.

Proportional feed is standard and regulates the feed system. As the engine begins to lose rotations per minute (RPM), the feed system will slow down based on various settings in the Bandit control system. This system gives adequate adjustments to effectively process material of varied sizes, allowing each unit to create a more consistent end product.

A wireless radio remote control system is standard on each grinder and will control all grinding functions. On track units, the remote controls all track functions and feature an LCD screen to display engine coolant temperature, engine oil pressure, engine load percentage, engine RPM and battery voltage.

To learn more about Bandit equipment or to schedule a demonstration, please contact your local authorized Bandit dealer or visit www.banditchippers.com.