HZ-330 Centrifugal Barrel Finisher

HZ-60 centrifugal barrel finishing machine with lid open.

HZ-330 High-Energy Centrifugal Barrel Finishing Machine

The HZ-330 is MFI’s largest capacity full-size industrial finishing machine, offering ample space for processing parts. With long and deep barrels, this machine is ideal for those needing to process higher volume parts or for those needing a machine that can handle large parts. Equipped with a cover lift, this model makes lifting the lid off your barrels a breeze.

Machine Type: High Capacity
Max Part Size: 40.75″ L x 11″ D
Barrel Dimensions: 41.4″ L x 11.9″ D
Popular Industries: Automotive & Transportation

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HZ-330 Basic Operation

The HZ-330 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-330 is isotropic, meaning parts are polished uniformly and evenly in all directions, something that cannot be achieved by hand finishing.

With variable frequency control, you have complete control over the speed of the tumbling process, allowing you to achieve anything from a simple polish to an aggressive deburring and radiusing at speeds of up to 115 RPM.

This machine can be fully customized with a range of accessories, including a touchscreen control panel, parts separator, drain pan, infrared safety curtain, among others, making it a highly adaptable solution for your specific finishing needs. See the accessories table for more information on customizable options.

HZ-330 Features and Benefits

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Full-size production

This model provides over nine times the capacity and efficiency of MFI’s compact centrifugal barrel tumblers like the HZ-40.

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Deep barrels

At 11” in diameter, these barrels are ideal for wider parts. Each barrel can be divided into 30 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.

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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.

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Short cycle times

Clean up metal, acrylic, rubber, and other materials in just minutes, rather than spending hours or days doing it by hand or using other finishing methods.

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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.

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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.

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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.

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Safe and easy operation

The integral hood switch and two-button jog requirement makes this series extremely safe to operate. The hood is securely locked during cycles. A built-in cover lift, timers, and controls makes running the machine simple.

HZ-330 Barrels

The HZ-330 Centrifugal Barrel Finisher features four 40.75” wide by 11” diameter barrels. 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. The HZ-330 also comes equipped with an auto door that automatically opens and closes the machine lid with the press of a button.

With 29 divider slots, it is possible to create 30 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-330 Recommended Accessories

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

Drain Pan

Collects water and drainage during the loading/unloading process
Grip strut floor surface to prevent operator slips and falls

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 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-330 Specs & Resources

HZ-330 Machine Specs
Main Motor	30 HP Totally Enclosed 230v to 460v (Please specify upon order) 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	12.8 cubic feet
Approximate Shipping Weight	6,800 lbs. (Machine only) 8,800 lbs. (With Drain pan option)
Drive	Variable Frequency Allen-Bradley, PowerFlex 525
Overall Dimensions	101” x 65” x 123”(machine)
Machine Construction	Heavy duty steel All welded construction Reinforced, gusseted, and welded to maximum strength
Paint	Heavy-duty powder coat Scratch resistant
Barrel Construction	41.4”L x 11” Dia. Four hexagonal barrels with removable lids Cam locks for secure operation
Barrel Liners	Hot poured polyurethane ¼” thick Field replaceable 29 Divider slots, 30 individual chambers possible
Barrel Cover Lift-(Optional)	Air driven system for removing covers Controlled via toggle switch on 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
Brake	Automatically stops the turret when a stop is activated or cycle is completed Activated if door is opened
Safety Interlock	Prevents door from being opened during operation Machine must be powered on in an idle mode to disengage lock Can only be opened once cycle is finished

Vibratory Media Separator	Dump fully loaded barrels inside machine Media and parts are separated through screens and vibration Media and parts travel out of machine to bins
Spray Header for Separator	Water spray bar that runs automatically when separator is running to clean media and parts
Drain Pan	100”L X 79-1/2”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 three compartment sludge tank mounted on casters for easier mobility Sludge tank can be sold separately
Barrel Dividers	Made from NYLOIL® A cast nylon with built-in oil lubrication Provides superior machinability, performance, and durability compared to other plastic
PLC Controller	Horner Electric EXL6 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 curtain is broken while door is open during loading/unloading Added layer of safety
Light Tower Indicator	Visual indicator of machines 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 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 Microseparator^TM	Clean and process effluent from tumbling process Processed wastewater is safe to send to drain or be used in a recycling system Solids are collected through centrifugal action of rotor via a reusable liner
Automatic Door Opener	Makes opening main access door easier Eliminates need for lifting on operator
Media/Compound	Required for running parts MFI Stocks all consumables used in 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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