HZ-120 Centrifugal Barrel Finisher

HZ-60 centrifugal barrel finishing machine with lid open.

HZ-120 Centrifugal Barrel
Finishing Machine

The HZ-120 is a full-sized industrial finishing machine known for its wide diameter and deep barrels. Its barrel diameter is over 4” larger than smaller models. With over triple the capacity of MFI’s compact machines like the HZ-40, you can finish larger and higher quantities of parts per cycle. Equipped with a cover lift, this model makes lifting the lid off your barrels a breeze.

Machine Type: Wide Diameter
Max Part Size: 16″ L x 9.5″ D
Barrel Dimensions: 17″ L x 10.25″ D
Popular Industries: Contract Manufacturing & Job Shops

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HZ-120 Basic Operation

The HZ-120 Centrifugal Barrel Finishing Machine is a high-energy finishing machine. It uses the pressure and friction created through centrifugal force to quickly remove excess material, polish part surfaces, and create a uniform finish. The finish achieved by the HZ-120 is isotropic, meaning parts are polished uniformly and evenly in all directions, something that cannot be achieved by hand finishing.

Tailored Finishing Speed and Configurations

With variable frequency control, you can control the speed of the tumble. Customers can achieve a simple polish at low speed or even aggressive deburring and radiusing at higher speeds, reaching up to 150 RPM.

This machine can be fully customized with a touchscreen control panel, parts separator, drain pan, infrared safety curtain, and more. See the accessories table for more information on customizable options.

How It Works

Centrifugal barrel finishing, also known as centrifugal barrel tumbling, operates on the “Ferris Wheel” principle with a one-to-one ratio of barrel rotation to turret rotation. The process involves loading four barrels with a mixture of parts, water, compound, and media, which are filled to around 50-80% capacity. As the machine rotates, the barrels spin around the turret and on their own axis, creating a sliding force inside the barrel.

HZ-120 Features and Benefits

1

Full-size production

This model provides more than triple the capacity and efficiency of MFI’s compact centrifugal barrel tumblers like the HZ-40.

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Deep barrels

At 10.25” in diameter, these barrels are deeper than the smaller HZ-Series models and ideal for wider parts. Each barrel can be divided into 13 individual chambers. 

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Built-in cover lift

Easily lift off your barrel lids, eliminating the need for excessive force when loading and unloading the machine.

Reduce manual labor

Manual labor and handwork can be very time-consuming, expensive, demanding, and dangerous. Our HZ-Series Centrifugal Barrel Finishing Machines take the handwork out of finishing.

Short cycle times

In a matter of minutes, centrifugal barrel finishers can clean up metal, acrylic, rubber, and other materials in what could take hours or even days by hand.

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Quieter operation

Compared to vibratory equipment, this series runs much quieter. They can be installed in places you wouldn’t want vibratory machines installed, such as where other machines’ tolerances may be affected.

Achieve a mirror-like finish

Nearly impossible to achieve by hand, our polishing machines can achieve a mirror-like finish on a variety of parts.

Save time and money

Due to the friction and force created by these machines, they run much more efficiently, using less media, water, and compound compared to other finishing methods.

Safe and easy operation

The integral hood switch and two-button jog requirement make this series extremely safe to operate. The hood is securely locked during cycles.

HZ-120 Barrels

The HZ-120 Centrifugal Barrel Finisher features four 17” wide by 10.25’’ diameter barrels. These barrels are over 4” deeper than the HZ-60 and HZ-85, making it ideal for wider parts. The barrels come with removable lids that are secured with cam locks for safe and efficient operation. The machine is equipped with an air-driven cover lift that is controlled by a toggle switch located on the control panel. This feature allows for easy removal of the barrel covers.

Customizable Barrel Dividers

With 12 divider slots, it is possible to create 13 individual chambers within each barrel if utilizing our optional barrel dividers. This allows operators to separate parts into several different chambers within each barrel. This is a critical feature when part-on-part impingement needs to be avoided.

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HZ-120 Recommended Accessories

HZ-60 Separator

Part & Media Separator

  • Simplify the media & part separation process
  • Dump fully loaded barrels
  • The machine vibrations separate the media & parts out of the machine and into bins
MFI Table Tank pulled out

Processing Table

  • Collects water and drainage during the loading/unloading process
  • Grip strut floor surface to prevent operator slips and falls
HZ-175 Centrifugal Barrel Finishing.

Barrel Dividers

  • Create separate chambers inside each of your barrels
  • Reduce part-on-part impingment
  • Available for all HZ-Series models (except HZ-12)
PLC Controller

PLC Touchscreen

  • Store processes as recipes for easy process selection
  • Replaces the analog cycle start buttons
  • Allows for better monitoring of machine use and time

Additional HZ-120 Specs & Resources

Specifications

Main Motor
  • 10 HP Brand
  • Totally Enclosed
  • Three Phase, 60 hertz

Barrel Rotation Motor
  • 2 HP
  • 230/460 volt
  • 3 phase, 60 hertz.

Machine Voltage
  • 230/460 volt (Please specify upon order)

Total Capacity
  • 4.7 cubic feet

Approximate Shipping Weight
  • 2900 lbs. (Machine only)

Drive
  • Variable Frequency, Allen-Bradley, Powerflex 525

Overall Dimensions
  • 71″L x 57″W x 106″H (machine w/ cover lift)
  • 100” x 95” footprint with drain pan option

Machine Construction
  • Heavy duty steel
  • All welded construction
  • Reinforced, gusseted, and welded to maximum strength

Paint
  • Heavy-duty powder coat
  • Scratch resistant

Barrel Construction
  • 17”L x 10.25”W
  • Four hexagonal barrels with removable lids
  • Cam locks for secure operation

Barrel Liners
  • Hot poured polyurethane
  • ¼” thick
  • Field replaceable
  • 11 Divider slots, 12 individual chambers possible

Barrel Cover Lift-(Optional)
  • Air-driven system for removing covers
  • Controlled via a toggle switch on the control panel

Control Panel
  • NEMA 12 enclosed panel
  • UL Certification Available
  • ABB push buttons and switches
  • PLC Option Available
  • 0-100 Hour cycle timer mounted on panel
  • Power jog of turret

Variable Speed Control

Brake
  • Automatically stops the turret when a stop is activated or a cycle is completed
  • Activated if the door is opened

Safety Interlock
  • Prevents door from being opened during operation
  • The machine must be powered on in an idle mode to disengage the lock
  • It can only be opened once cycle is finished

Options

Vibratory Media Separator
  • Dump fully loaded barrels inside the machine
  • Media and parts are separated through screens and vibration
  • Media and parts travel out of the machine to bins

Spray Header for Separator
  • Water spray bar that runs automatically when the separator is running to clean media and parts

Drain Pan
  • 100”L X 95”W X 8-1/2”H
  • Collects any water drainage during loading/unloading
  • Grip strut floor surface to prevent operator slips and falls

Processing Table and Sludge Tank
  • Constructed of 1/2” P.V.C. and Anodized aluminum frame
  • Includes a three-compartment sludge tank mounted on casters for easier mobility
  • Sludge tanks can be sold separately

Barrel Dividers
  • Made from NYLOIL®  A cast nylon with built-in oil lubrication
  • It provides superior machinability, performance, and durability compared to other plastic

PLC Controller

 

  • Store recipes and processes
  • Maintenance reminders and machine diagnostics
  • Automated fwd/rev and speed adjustment

Rinse Screen
  • Fits over barrel and dividers
  • Attaches with quick latches
  • Spray out dirty water and debris without dumping barrels

Infrared Safety Light Curtains
  • Disables machine if the curtain is broken while the door is open during loading/unloading
  • An added layer of safety

Light Tower Indicator
  • Visual indicator of the machine’s status
  • Can be customized to match existing equipment

Media Return System
  • Operated with foot pedal
  • Lifts media to bench height after media baskets are slid onto the platform
  • Reduces lifting requirements on operators

Custom Logo/Paint
  • Paint matched to customer color scheme requirements
  • Sticker Logo provided by MFI or Client

Centrifuge Module – CF55 SD Series MicroseparatorTM
  • Clean and process effluent from the tumbling process
  • Processed wastewater is safe to send to drain or be used in a recycling system
  • Solids are collected through the centrifugal action of the rotor via a reusable liner

Automatic Door Opener
  • It makes opening main access door easier
  • Eliminates the need for lifting on the operator

Media/Compound
  • Required for running parts
  • MFI Stocks all consumables used in the testing process
  • Media ships in 50 or 55-pound quantities

Media Storage Rack
  • Keep media out of the way when not in use
  • Industrial powder-coated steel construction
  • Made to fit 12 MFI gray media bins

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