HZ-175 Centrifugal Barrel Finisher

HZ-60 centrifugal barrel finishing machine with lid open.

HZ-175 High-Energy Centrifugal Barrel Finishing Machine

The HZ-175 is a full-sized industrial finishing machine known for its long barrels. At 48” long, the HZ-175 has the longest barrels of all the HZ-Series machines. It also has a wider diameter than half the models that MFI offers. This longer barrel capacity caters perfectly to customers with medium-sized parts that are longer than average.

Machine Type: High Efficiency
Max Part Size: 47″ L x 7″ D
Barrel Dimensions: 48″ L x 8″ D
Popular Industries: Firearms & Munitions, Knives, Aerospace

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HZ-175 Basic Operation

The HZ-175 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-175 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 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.

HZ-175 Features and Benefits

Full-size production

With the longest barrel and 8” diameter, you can run more parts with less media than our HZ models with 12” diameter barrels, saving money on media usage.

Long barrels

At 48” long, these barrels are the longest in the HZ-Series of machines and ideal for longer-than-average parts. Each barrel can be divided into 21 small individual chambers.

Auto Door

Automatically open and close the machine door with the push of a button.

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

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.

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 makes this series extremely safe to operate. The hood is securely locked during cycles.

HZ-175 Barrels

The HZ-175 Centrifugal Barrel Finisher features four 48” wide by 8’’ diameter barrels.

The lids are not removed during operation on the HZ-175 machine. Each barrel has 5 hinges with springs along the back side of the cover to aid in opening the lid. The operator simply unlatches the front locking mechanisms and lifts the lid to open each barrel. The barrel lid will remain open while the operator loads or unloads the machine.

With 20 divider slots, it is possible to create 21 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.

Get Stocked Up on the Essentials

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HZ-175 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

Drain Pan

  • 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-175 Specs & Resources

HZ-175 Machine Specs
Main Motor
  • 15 HP
  • 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
  • 6 cubic feet
Approximate Shipping Weight
  • 7000 lbs.
  • Variable Frequency
Overall Dimensions
  • 102″ L x 57″ W x 85″ H (Machine)
Machine Construction
  • Heavy-duty steel
  • All welded construction
  • Reinforced, gusseted, and welded to maximum strength
  • Heavy-duty powder coat
  • Scratch resistant
Barrel Construction
  • 48” L x 8″ W
  • Four hexagonal barrels with hinged lids
  • Locks for secure operation
Barrel Liners
  • Hot poured polyurethane
  • 1/2” thick
  • Field replaceable
  • 20 Divider slots, 21 individual chambers possible
Control Panel
  • NEMA 12 enclosed panel
  • UL Certification Available
  • Standard push buttons and switches
  • PLC Option Available
  • 0-100 Hour cycle timer mounted on panel
  • Power jog of turret
  • 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
Automatic Door Opener
  • Makes opening main access door easier
  • Eliminates need for lifting on operator
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
  • 134.5” L X 96” 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
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
Custom Logo/Paint
  • Paint matched to customer color scheme requirements
  • Sticker Logo provided by MFI or Client
Centrifuge Module – CF-55 
  • 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
  • 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 up to 12 MFI gray media bins

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