Supfina Machine Company, Inc.

181 Circuit Drive
North Kingstown, RI 02852 US

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A Message from Supfina Machine Company, Inc.

Precision is our passion

That core value ​​drives us to be the technology leader for superfinishing, fine-grinding, and flat-finishing systems.

Precision abrasive finishing: Fine grinding

From aluminum to steel, from soft plastics to hard ceramics: No matter the workpiece properties, our new SPIRO F7 machine provides the best fine-grinding solution for achieving highly precise plane parallelism.

Precision abrasive finishing: Flat finishing

Supfina’s new FACE machine provides fast, versatile solutions for the high-precision, flat finishing of parts in a number of fields: injection technology, transmissions, hydraulics, and engines.

Superfinishing: Gear shafts

Designed on the modular principle, the Supfina M-660 is suitable for almost all superfinishing tasks on workpieces capable of being positioned between centers.

As Seen In Modern Machine Shop

Supfina Spiro series

Grinding Machines Designed for Precise Plane Parallelism
Supfina Machine Company’s Spiro series of surface-finishing systems supports fine grinding with precise plane parallelism (less than or equal to 1.0 micron) for precision bearings, pump gears and valve plates.

Product Categories of Supfina Machine Company, Inc.

Buffing & Polishing Machines
Grinding Attachments & Accessories
Grinding Machines, Disc, Single or Double
Super (Micro) Finishing Machines
Superabrasive Machining Systems
Turning Attachments

Trade Names

Face
LeanCostMachine
Masco
Megaflex
Nanoflex
Plant V
Race
Spiro

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Technology Center North Kingstown, RI

Precision is our passion

That core value ​​drives us to be the technology leader for superfinishing, fine-grinding, and flat-finishing systems.  Add economy, quality, reliability, and service to our principles, and you’ll understand why Supfina is one of the world’s leading manufacturers for surface-finishing systems.

Deeply rooted in German technology, we have devoted decades to researching and developing the best professional solutions for our customers.  Let us put our expertise to work for you.

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Precision abrasive finishing: Fine grinding

From aluminum to steel, from soft plastics to hard ceramics: No matter the workpiece properties, our new SPIRO F7 machine provides the best fine-grinding solution for achieving highly precise plane parallelism. And whatever the material, the job can be done to the most stringent tolerance requirements in the micron range, with the precision that you’ve come to expect from Supfina.

What’s more, such precision can perfectly meet your specific needs.  Drive performance; loading options; filtration and cooling; optimal tooling: Supfina works closely with each customer to determine what solution works best for that particular machining task.

Modular systems are available for manual and automatic loading.  Naturally, these can be customized to individual customer requirements or enhanced to accommodate newly developed components. Depending on the material, workpiece dimensions, surface finish, and removal requirements, a single SPIRO F7 can perfectly fine-grind up to several thousand workpieces per hour.

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Superfinishing: Gear shafts

Designed on the modular principle, the Supfina M-660 is suitable for almost all superfinishing tasks on workpieces capable of being positioned between centers. As a rule, the workpiece is secured by a power-operated chuck or front-end driver.

The headstock (with infinitely adjustable drive system) is stationary, while the pneumatically operated tailstock traverses dovetail guideways.

This machine offers two options for the oscillating unit. A pneumatic oscillator can perform approximately 2,500 double strokes per minute, while a mechanical oscillator can make approximately 1,500 double strokes per minute. Both options have ­variable amplitudes. The superfinishing-tool oscillation occurs while the workpiece is rotated between centers.

The tools are applied to the workpiece surface with the desired force and are lifted off when the superfinishing process completes. The worn superfinishing tape advances so that fresh tape is available to finish the next workpiece.

Up to five tape modules may be used. Tools are easily replaced by means of rapid-change mounts.

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Precision abrasive finishing: Flat finishing

Supfina’s new FACE machine provides fast, versatile solutions for the high-precision, flat finishing of parts in a number of fields: injection technology, transmissions, hydraulics, and engines.  The parts can be finished with the tightest tolerances in the tenth-micron range, as well as with Supfina’s renowned reliability and efficiency.

Because the machine’s intelligent design eliminates the need for coolant, the Face uses far less energy — which saves not only costs but also the environment.  Integrated fire-suppression technology ensures optimal safety, while the Supfina IQ-Finish process control guarantees reliable and continual compliance with the most demanding quality parameters.

The Face can accommodate workpieces of various sizes: lengths up to 200 mm, diameters up to 200 mm, and machining surface diameters up to 150 mm.  As many as eight different chucks can be used, and loading can be done by external robot or gantry systems.