High-Performance Surface Finishing Machine Manufacturer from China

  • Create a smooth, micro-textured surface
  • Widely used in gear, turbine, orthopedics, racing parts
  • Wear-resistant high density tumbling media
  • Surface reactive chemical provides homogeneous finish
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Inovatec Machinery Your Best Isotropic Super finishing Machine Manufacturer in China

The isotropic superfinishing machine is well known for the REM process or ISF process. The isotropic superfinishing device utilizes vibratory finishing equipment combined with active chemicals and high-density ceramic media to create a low Ra surface. This process also called chemically accelerated vibratory finishing, where highly active compound plays an essential role in the process.


VBS(B) Vibratory finishing machine is ideal for medium-sized parts REM processing with separation function

4. VB(A) vibratory deburring machine

VB(A) series Vibratory Polishing machine has superior burnishing performance, suitable for big sized pieces burnishing

5. TVB(A) tub vibratory finishing machine

TVB(A) Tub vibratory finishing machine is for long articles, eg, crankshaft isotropic superfinishing

2. Centrifugal Barrel Finishing machine

CB series Centrifugal Barrel Finishing machine improve parts entire surface in a short amount of time

Optional Design & Setting

Prominent Metering Pump with LED Display the Normal frequency IP55, Suction and delivery values

Bosch Rexroth Variable Frequency Converter for Vibration Intensity & Amplitude Adjustment

Acoustic noise lid prevents liquid sputtering and noise dampening, reduce noise level 10-15 dB

Manual separation handle close the dam for quick media/parts separation

Pneumatic separation flap controlled by compressed air allows fast parts collection from media

Reverse separation is designed for small parts collecting from big sized tumbling media

Isotropic Superfinishing Media

Inovatec supplied high density tumbling media for the superfinishing process. The high-density finishing media is available in big and small sizes. The most popular shapes are a triangle, cylinder, and wedge.

Inovatec Machinery – China Leading Isotropic Superfinishing Machinery Manufacturer & Supplier
  • Significantly reduce parts friction, noise, and vibration
  • Surface smoothing, polishing, cleaning in one process
  • Extend components life and reduce wearing
  • Environmentally friendly process, improve energy efficiency

Frequently Asked Question
Does your machine have a minimum order quantity?

The minimum order quantity is a machine.

What kind of material is your machine packaged?

We are using a wooden fumigation box to wrap the machine.

What about your terms of payment?

First 30% advance payment, the other 70% paid before delivery.

If it is a big order, we are doing a sight letter of credit.

We trade through PAYPAL if we cooperate for the first time.

Of course, you are welcome to come to the factory for inspection.

When is the fastest delivery time?

Normally, 15-25 days to complete.

If your motor power is not 380V 50HZ, then it will be a few days later.

If the goods are in a hurry, we will complete it within the volume week.

Which port can you ship the goods?

We can deliver the goods to Shanghai Port, Ningbo Port, and Yiwu Port.

Isotropic Superfinishing Machine

During the REM Polishing process, active chemical always corrodes micro pitting, leaving the surface with low surface roughness (0.02 Ra).

The process creates a uniform, non-directional surface while improving parts’ overall performance.

Also, the isotropic finishing process reduces parts friction and wears, increases parts life, and also increases corrosion resistance.

high density media polishing brass parts

The process of isotropic superfinishing can carry out either in a bowl vibratory finishing machine, a tub vibratory finishing machine, or a centrifugal disc finishing machine.

The application of REM finishing equipment includes gear parts polishing, aerospace turbine blade, automotive engine parts, motorsports racing parts, wind turbine gearboxes, helicopter transmissions, crankshaft, medical implant as well as bearings, etc.

These high-valued parts are processed piece by piece in a separated chamber.

Inovatec machinery produces the highest standard surface finishing for all parts.

high density tumbling media

Our isotropic superfinishing machine has superior benefits:

  • Reduce parts friction, vibration, and noise
  • Greatly extend parts life
  • Reducing parts operation temperature
  • Improve parts performance
  • Improved fatigue strength
  • Less maintenance for parts
  • Improve parts loading weight

gear parts before and after polishing

Inovatec manufacture mass finishing equipment since 20 years ago.

We promise to deliver our client the right surface, finishing solution with the best cost-saving.

If you have the gear components to improve surface conditions, you are welcome you send the parts to us.

We make free processing and send it back to you for inspection.

Send us the inquiry now and get the fast quotation!

Isotropic Superfinishing Machine FAQ Guide

1. What is an Isotropic Superfinishing Machine?

An Isotropic Superfinishing Machine subjects workpieces to a unique process that leads to a non-directional low Ra surface.

It employs mass finishing equipment in conjunction with accelerated refinement chemistries that are non-hazardous and environmentally friendly.

By using high-density, non-abrasive media with an isotropic superfinishing chemistry, the machine finishes your workpieces below 0.25 µm or nominally 10 µin

2. What are the components of an Isotropic Superfinishing Machine?

Isotropic Superfinishing Machines are quite similar in form and constituents to vibratory finishing machines.

Only that there’s an introduction of distinctive after-effect chemistry to Isotropic Superfinishing Machines.

Its components therefore include:

The Machine – This comprises the vibratory work tub or chamber, the motor and various other interconnected parts that make the Superfinishing machine, tick.

The Compound-These are dry or wet substances added to the mass finishing machine.

It helps to reduce the corrosion of the machine and the media.

In addition, the chemistry enhances the superfinishing process to meet its result.

The Media – This is the loose, non-abrasive substance that kicks at the workpiece, in the machine.

In other words, the constant ‘rubbing’ of the substance against the workpieces, aids in finishing their surfaces to satisfaction.

The type of media introduced in an Isotropic Superfinishing Machine depends on the type of finish anticipated.

ceramic high density tumbling media

3. How does an Isotropic Superfinishing Machine work?

The Isotropic Superfinishing Machine deploys a chemically-accelerated vibratory mass finishing process.

It uses conventional vibratory finishing methodology and high-density, non-abrasive media to produce an isotropic super finished surface.

Notably, Isotropic Superfinishing Machines are capable of generating surface finishes with a 0.02 μm Ra.

Now, to achieve the required superfinishing, the workpieces are placed into the vibratory bowl or tub.

Such workpieces include automotive camshafts, valve springs, gears, bearings, and rings/pinions.

The chemically-accelerated refinement process consists of two steps that are sequentially conducted within the same machine.

Initial processing uses cut chemistry that reacts with workpieces’, producing a soft conversion coating.

As the workpieces roll in the machine, the conversion coating is wiped from peaks.

This helps expose the unreacted, underlying metal.

Once the underlying asperities are removed and the improved micro-finish achieved, a mildly-alkaline, soap-like burnish chemistry is released.

The chemistry helps to neutralize and remove any residual coating remaining on the workpieces from the prior refinement step.

This finally yields a mirror-like final finish on the workpiece.

isotropic surface finishing diagram explanation

4. What functionalities does an Isotropic Superfinishing Machine offer?

Isotropic Superfinishing Machines help enhance and fine-tune the surface quality and outlook of workpieces.

Such surface refinement includes: Polishing, burnishing, deburring and descaling.

rem process discription


This involves the processing of a workpiece to produce a luster finish on its surface.

To achieve this desired refinement, the appropriate media must be used


This is one of the most common usages of the Isotropic superfinishing machine.

It involves the removal of edges and burrs on workpieces, left after machining. A common example of deburring is smoothening a sharp corner in a workpiece, into a rounded corner.

5. In what way is an Isotropic Superfinishing Machine different from other mass finishing Machine processes?

When metal parts come into contact, contact stresses and friction occurs which directly impacts performance.

In time, this compromises the health and usability of such a component.

This is of particular concern with aerospace gearing applications, in which high contact stresses are present and high fatigue life is a requirement.

By improving surface finish with the superfinishing process, stress concentrations and wear can be significantly reduced.

To achieve optimal surface finishes on workpieces, machining or grinding of workpieces has historically been the chosen manufacturing process.

With these mass finishing manufacturing processes, resulting surface finishes typically hovers around 16 RA, or 16 microinches.

But with the Isotropic superfinishing process, surface finishes are reduced to as little as 2 RA.

This has a direct benefit on the life of the part. In fact, such a huge surface finish reduction can increase the life of a part up to 300%.

This is because of the friction reduction and increased rolling contact fatigue life.

6. What type of workpieces are Isotropic Superfinishing Machines best for?

Isotropic Superfinishing Machines are widely noted for the special effects they have on workpieces.

These premium functionalities make them a perfect and most preferred choice for superfinishing metals.

Suitable components for this treatment include: Motor shafts, gears, turbine vanes, blades for aeronautics, impellers for compressors.

In addition are power transmissions, toothed joints, punches for dies, aerospace turbine blades, crankshafts, camshafts, valvetrain components and many more.

7. What are the industrial applications of an Isotropic Superfinishing Machine?

As industrial machinery, Isotropic Superfinishing machines are special, as they are versatile.

They are used in a wide variety of special industries that lay emphasis on reduced roughness average (Ra).

Some of its industrial usage scenarios include:

Aerospace and Defense: Usually, metal smoothness and strength is usually a crucial requirement for aerospace and defense workpieces.

Their manufacturers thus use Isotropic Superfinishing Machines to optimize and make products conform to industry standards.

Some of the parts that benefit from this process include jet engine, turbine blades, and many more.

turbine blade drag finishing superfinishing

Automotive: The automotive industry benefits so much from Isotropic Superfinishing Machines in enhancing metal parts surfaces.

This is because of the high level of friction that Automotive parts are put under, in day-to-day usage.

In particular, the automotive industry uses Isotropic Superfinishing Machines to polish gears and fasteners, engine heads, and many more.

automotive parts surface finishing

Medical Device: Customers expect consistent, high-quality finishes on medical device metal parts, that often have complex geometry.

These machines deliver fast enhancement of stainless steel, titanium and cobalt chrome with surgical parts.

Other application scenarios include dental implants, dental tool polishing and many more.

Motorsports – Motorsports products are often associated with glistening parts and workpieces.

Such states see achieved with the aid of Isotropic Superfinishing Machines

gear parts before and after polishing

Earthmoving Machinery



8. What are the necessary maintenance tips for an Isotropic Superfinishing Machine?

If one desires to make the most use out of the anisotropic superfinishing machine, it’s important to take good care of it.

Some maintenance checks include:

Restore the media level:

The literal rule is to never allow the machine’s media level to drop, for whatever reason.

Some reduce it to save money or create room for mass finishing more workpieces.

Its consequence includes slow process time, machine or workpiece damage, non-qualitative finishing, etc.

Check the Vibratory Bowl or Tub:

The machine’s vibratory motion causes a lot of wear and tear in the superfinishing process.

Ensure to look out for borings in the tub which could result in drilled holes.

Don’t be tempted to put in too many workpieces:

Putting in too many workpieces at a time, wouldn’t go down so well.

It could make workpieces bounce on each other, damaging them.

Ensure to read and understand the manufacturer’s manual, to know the machine’s capabilities.

9. Can vintage engine parts be Isotropically super-finished?

Yes. Matter of fact, vintage parts are usually manufactured from high-quality base metal types.

This enables them to produce an outstanding “like new” look when isotropically super finished.

10. What is REM in Isotropic Superfinishing?

REM is an acronym for a specific isotropic finishing.

When an isotropic superfinishing machine is used appropriately, the results are the same.

11. How much material does an Isotropic Superfinishing Machine remove during processing?

Material loss during Isotropic Superfinishing is on the minimal side.

The loss is thus measured in Microns or one-millionth of an inch.

12. Are there side effects to workpieces that are super finished with an Isotropic Superfinishing Machine?

If the machine is used appropriately and correctly, a workpiece should suffer no detrimental effect(s).

13. What are the most appropriate media material for Isotropic Superfinishing Machines?

Isotropic Superfinishing Machines make use of several non-abrasive media that enhance metal workpieces’ surfaces.

Depending on the type of finishing needed, some popular media composition includes: Porcelain media, High Density Media, etc.

Finishing shapes could also be of varying types including, Cones, Pyramids, Cylinders, Sphere, Wedges, Tetrahedrons, and many more.

High density tumbling media

14. What are the actual technical merits derivable from an Isotropic Superfinishing Machine?

Lesser Friction

Isotropic Superfinishing machines condense the structure of inserted metals to reduce its Roughness Average(Ra).

Such reduction varies substantially from machine to machine.

What’s most important, however, is that it makes the workpiece resistant to fatigue failure or easy wear-out.

This is because lesser friction translates to reduced wear & tear, high fuel efficiency, and lower heat generation

surface roughness of metal parts

Corrosion Resistance

An Isotropic Superfinishing Machine also helps expunge micro-notches, asperities, and roughness, in a workpiece.

This gives a workpiece greater resistance against rust and other types & forms of metal corrosion.

Essentially, an Isotropic-finished workpiece has a lesser probability of developing cracks and other imperfections.

Polished Finish

Not only is an Isotropic-finished workpiece stronger, but it also gets a glistening look.

Isotropic Superfinishing Machines effectively remove visual defects by polishing the surface, to give it a more appealing outlook.

vibratory finishing cleaning and polishing

15. Honing vs Lapping in Isotropic Superfinishing

Honing is a finishing process that produces a precision surface on a metal workpiece, along a controlled path.

It is useful for improving the geometric form of a surface. Sometimes, it could be useful for surface texture improvements too.

Lapping, on the other hand, refers to a machining process in which two surfaces are rubbed together with an abrasive between them.

This is done to achieve some element of surface refinement and improvement while cutting down on process time.

abrasive wheel roller grinding machine

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