Vibratory finishing machine

Vibratory Finishing Machines is one of the most commonly used processing machinery in mass finishing field, used for deburring, polishing, descaling, and surface improvement on metal and plastic parts

Are you looking to buy a vibratory finishing machine for your business but don’t know how to go about it? Are you worried if it’s the best way to offer finishes to metals?

Here is the thing – the way we give a surface finish to metal has remained almost the same since ages. We still use the same principles that Romans used to shine dull metal, smoothen rough surfaces, and soften sharp edges. Only the technology we used to provide the surface finish has gone through massive changes.

Vibratory finishing machines are a type of machine used to provide surface finish to a range of materials. They are one of the preferred choices for industrial applications due to ease of use and simplicity. Also, they save a lot of time compared to older finishing technologies.

The vibratory finishing process application usually combines creative process technology and innovative equipment engineering.

Inovatec vibratory finishing machine has high equipment quality and reliable standards with a functional design. Besides, they offer characteristics of easy operation and a high degree of productivity.

The machinery and system is extremely flexible and versatile mass finishing systems

It can be used for all metals, many plastics, ceramics, rubber, wood, stone and glass and can help to achieve a wide range of objectives. Excellent results can be obtained for highly delicate and small components as well as for large and robust parts.

three vibratory finishing machine production line


Working Principle

Vibratory surface finishing takes place in a work bowl placed on coil springs.  The vibratory energy is induced by a special vibratory motor that is mounted in the centre of the work bowl. The vibration creates the typical relative movement of media against parts.

The continuous feeding of water and compound-also are known as soap-support the finishing process.

vibratory finishing machine water outlets

Frequently, the vibratory finishing machine is equipped with an integrated separation flap and screen. This allows separating the finished parts from the media in the machine.

Via the separation screen, the parts are transferred to the machine exit or to a post-treatment system, for example, a dryer, while the media remains in the machine. Of course, automatic solutions including different types of material handling systems, along with per- and post-treatment unit are possible.

vibratory finishing machine curved wall

Standard Features:

  • Effective motor position for Excellent Vibration.
  • High tensile bolts and nuts for a long service life of motor and machinery.
  • Efficient removal of process fluid for best surface finish.
  • High efficient motor.
  • Bowls shot blasted before and after Polyurethane lining for painting.
  • All internal welds ground smooth.
  • Anti-rotation motor locking plate provided.
  • Bowls Surface finishing is Stress relived and strengthened with shot blasting process

sound proof cover pneumatic cylinder


Additional Features:

  • Separation area is designed to fit media and parts easy selection
  • Complete Polyurethane dam flap to avoid metal contact instead of the metal flap.
  • Polyurethane and paint are corrosion resistant for longer life in harsh chemical environments.
  • Accident proof media outlet design for total safety.

vibratory finishing machine control box



  • Versatile components adaptability, from very precise fine component until huge casting parts, each product can be customized process design
  • Inspection during the process
  • Separation integrated into the machine
  • Better media/parts mixing since it has cascade and circular action.
  • Cost-saving compared with the manual process
  • Automatic processing
  • Process-based on the batch or continuously

Vibratory finishing machine up views with separator

What is a Vibratory Finishing Machine?

Vibratory finishing machines replaced the rotary tumbling barrels used for finishing parts in the 1950s. First introduced in Europe, they proved to be a lot faster and effective than rotary tumblers.

The vibratory finishing machines use a rotating shaft coupled with an eccentric weight to create a force inside a tub or barrel. The force shakes and moves the parts and media inside the tumbler at varying frequencies, making them come in contact with each other. The rubbing of the materials is what provides the desired surface finish.

Vibratory finishing machines can be used to achieve a range of surface finishes, including deburring, descaling, burnishing, cleaning, and radiusing. You can also provide finish to internal features of parts like holes.

How Does a Vibratory Finishing Machine Work?

Vibratory finishing machines have a chamber or tumbler to load the parts, media, and water. You can also use the machines for dry finishing processes without any liquid.

The machine operator fills the tumbler with a mixture of parts and media. Liquid or water is added as per requirements. After the machine is activated, an eccentric and rotating shaft vibrates the tumbler in a circular path.

plastic media vibratory finishing and deburring

The vibration creates a force inside the tumbler that makes the parts and media go up and falls. During this process, the tumbler also applies an angular and upward force that makes the particles and media rub against one another. The machines also make parts come in contact with particles and remove material through erosion.

This is how vibratory finishing machines are used to provide surface finish in less time compared to rotary finishing technology.

Why Use Vibratory Finishing Machines?

Vibratory finishing technology is far superior to the older rotary tumbler finishing technology. It provides far better results in much lesser time, making the technology suitable for industrial applications. The whole process can be automated to support the large-scale operations of any organization.

Vibratory finishing machines also provide a much smoother finish compared to rotary tumblers. You can also provide finish to delicate and fragile parts as the whole load moves together in a unit. The process is also not vulnerable to tearing. You always have an equal force acting on the load to eliminate any chances of bent or distorted parts.

Vibratory finishing machines are suitable for both light and heavy cutting. You can vary the frequency of the machine to create different magnitudes of force. As a result, both delicate and heavy cutting is possible with vibratory finishing machines.

precision parts surface finishing

Elements of Vibratory Finishing Machines

A vibratory finishing machine consists of-

Container: A round, spiral, or tub-shaped container holds the load.

Shaft with eccentric weight: The shaft vibrates the container to create abrasive energy. You can shift the weights for achieving different results.

Sorting: Some machines can sort materials directly from the container. Else, there may be a sorting tray.

ceramic deburring steel metal parts

Types of Vibratory Finishing Machines

A range of vibratory finishing machines is available in the market. The technology is the same in all machines, whereas the shape and size changes. Here are some common types of vibratory finishing machines-

Tub Vibratory Machines

The machines have a horizontal tub with an u-shaped bottom. It’s ideal for processing long and large parts. You can also divide the tub and process large parts without allowing them to come in contact with each other.

plastic parts deburring in vibratory tub finishing machine

Round or Bowl Vibratory Machines

These are the most common type of vibratory finishing machines used in industries. The machines have a round or bowl-shaped open-top container that holds the load. They are powered by eccentric vertical shafts built around the middle column.

The load moves around the central column following a forward- rolling feed motion.

vibratory finishing machine installation

Spiral Vibratory Machines

A variation of the round vibratory machines, and comes with a spiral-shaped container. This type of machine allows easy separation parts within a few minutes. The spiral shape also makes the machines a bit more efficient than round vibratory machines.

rotomatic vibratory finishing machine

Trough Vibratory Machines

Ideal for deburring, polishing, and degreasing. It can be used to finish medium parts like blades, axles, and shafts.

Elliptical Vibratory Machines

These are used for eliminating light burrs and give a general finishing. You can process an entire batch in less than 10 minutes.

Benefits of Vibratory Finishing Machines

Some benefits of vibratory finishing machines include-

  • Smooth finishes
  • Faster than a rotary tumbler
  • Can process a range of parts and materials
  • Open top to check the quality and outcome of finishing
  • Ideal for dry and weight media
  • Shorter time cycles per batch

Aluminum machining parts before and after deburring

Wrapping Up

Vibratory finishing machines are the top choice for providing surface finish in leading industries. The machines save you time and help you achieve precise results with a smooth finish. You can use different types of vibratory machines to support different parts and achieve different finishes. Vibratory machines can also save considerable costs.

Now that you know the different benefits of a vibratory finishing machine for your business, what’s stopping you from buying one? Let us know below.


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