- Offer Profile
- For every requirement for
accurate fine-finishing of surfaces, we have the most appropriate
professional solution for you. The flexible machine concept makes it
possible to adapt the machine to changing workpieces or modifications to the
surface requirements quickly and easily. Exactly the way your production
needs it to be. In this way, you can respond rapidly to the changing needs
of your customers and consolidate your own market position.
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Solutions for high-precision abrasive machining
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A perfect surface results from the synergy of several factors.
No matter your requirements for the precision finishing of surfaces, Supfina engineers the best professional solution to your exact specifications. Thanks to the flexible design of our machines, you can quickly adapt to changing workpieces or surface parameters — just as your production requires. Thus, you can react quickly to changing customer needs as well as strengthen your market position.
The company takes seriously its responsibility to offer customers comprehensive support and solutions in all areas of surface finishing: whether in the development/production of optimum surfaces, in the manufacturing of machines with automation, or in the integration of a machining process with robotic support.
Our product range includes machines and equipment for superfinishing, double-disk grinding, fine grinding, and flat finishing. We also specialize in automation solutions. Since 1903, our company has been on the cutting edge for offering customers integrated and innovative systems, including comprehensive services.
Partner for the perfect surface
As one of the world’s leading providers of high-precision surface finishing, Supfina customizes solutions to your exact specifications so that together we can perfect a particular surface.
Decades of engineering expertise means that we are uniquely qualified to support you every step of the way — from product development to process technology to prototyping. And thanks to our innovative automation, Supfina easily and flexibly integrates our solutions into your existing production structure. From a single, stand-alone system to a fully integrated machining process with robot support, Supfina provides the right solution for every surface challenge.
Talk to us about your specific requirements … then benefit from our state-of-the-art machines, clever automation options, and comprehensive range of services.
Linked to success
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Single machine · Interlinking · Robot cell
Along with precision, every production process naturally focuses on profitability. Supfina has a long history of providing unique solutions that achieve both.
Whether automated loading and unloading by gantry loader; linking of systems in an existing production structure; or using innovative robot cells — all in close consultation with the customer — we develop the best possible solutions for different production conditions.
Supfina is also setting standards in digitization. Thanks to intelligent networking and IoT connectivity, systems can be better coordinated to optimize maintenance and reduce wear.
With Supfina’s deep integration of assets, intelligent automation, and digital connectivity, we can boost your production’s profitability and overall equipment effectiveness (OEE).
Fully automatic production
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Modular · Flexible · Economical
Do you need a flexible, modular, and economical solution for your processes? With the R-Cell, Supfina presents an innovative manufacturing cell that easily fulfills all of these requirements. In the modular robot cell, a large number of components can be arranged according to one’s production needs. What’s more, its flexible design allows you to extend and modify the cell at any time. This not only ensures increased freedom and faster changeover, but such efficient production in a small space also means great savings potential.
From consulting to planning, from implementation and programming to commissioning and service: Supfina accompanies you as an integrated solution provider on the way to the future of production.
Superfinishing machines
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The shape of the workpiece and the position of the surface to be finished determine the superfinishing process that is used.
Possible finishing tools are superfinishing stones, superfinishing tapes, or a combination of both. Plunge finishing
Supfina Solutions: Plunge finishing
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Pinions, camshafts, and crankshafts
Many of the components used in vehicle drivetrains — including gears and various shafts — are subject to extreme loads. Only an absolutely perfect surface finish can guarantee long service and minimize wear. Supfina has the right solutions to achieve that aim.
Our superfinishing machines produce components of outstanding quality. They are versatile, extremely economical machines with unsurpassed reliability.
But we won’t rest on our achievements. Our engineers constantly improve our machines and refine their functionality — and we’re not happy until your needs are met.
Supfina LeanCostMachine®
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Versatile production machine for small runs
Range of application
Supfina’s new LeanCostMachine® offers optimal versatility for superfinishing small and medium-size runs of parts — economically and flexibly. Its modular system — equipped with state-of-the-art technology — meets the highest standards for quality and process dependability, especially for the automotive industry and its OEM suppliers as well as the hydraulics, aerospace, power generation, and medical technology industries.
The LeanCostMachine® can be equipped with preassembled modules designed to match specific machining tasks. Whether fixed in place, manually adjustable, or NC-controlled, up to six Supfina attachments for stone and tape finishing can be used at the same time as the brushing and polishing attachments.
Thanks to its unique design, all of the modules can be integrated into the machine with little effort. Not only did we account for the optimal configuration of the various Supfina attachments, all of the additional machine assemblies — switch cabinet, safety cover, attachment mount, and operating panel — can be fitted to ready-made holders or be bolted to predefined locations based on production needs.
The machine can easily be configured to match installation and workpiece-feed conditions on-site. Standardization of all of the assemblies ensures short delivery times, easy expansion, and the highest quality in terms of machine construction and products finished.
The Supfina LeanCostMachine® is affordable, versatile, and fit for the future.
TECHNICAL SPECIFICATIONS- Floor space required in mm: 2684x1788 including coolant filtration trolley
- Paint finish: black/gray with red stripe
- Distance between centers in mm: 40 – 800
- Center height in mm:
1110 from floor level
260 from machine table - Compressed air supply: 4.5 – 6.0 bar
- Loading: manually, by hand
- Controller: Siemens CPU-315-F with KP700 Comfort Panel
- Superfinishing tools: Superfinishing tape or stone, cup wheel, brushing and polishing disk
- Coolant rinse: Emulsion, oil, or dry
Supfina CenFlex 1
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Supfina cenflex 1: the flexible tape finishing machine for automotive applications
Range of application
Whether for limited prototype production or for a full-scale run of workpieces, the Supfina CenFlex 1 is your highly reliable, economical, and efficient answer.
Depending on the application, setup can be either a single- or multi-step machining of the workpiece. As proof of its flexibility, the CenFlex 1 can finish just about any part — whether a crankshaft, a camshaft, or a gear shaft.
TECHNICAL SPECIFICATIONS- Workpiece (shaft) length: 400 – 1000 mm
- Stroke (for crankshafts):
max. 100 mm
optional max. 120 mm - Superfinishing tape arms: max. 15
Supfina CenPro S
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Horizontal machining of crankshafts and camshafts
Range of application
The Nearly every automobile manufacturer is in the processof downsizing its passenger cars’ engines. Small displacement engines are lighter and have reduced friction loss, thus making them more fuel efficient and able to meet more stringent emission limits.
To achieve this technically, tomorrow’s crankshaft bearings will need to have smaller diameters and lengths, and will often need to be harder — resulting in higher stresses and strains due to increased pressures. Thus, the surfaces of the main and pin bearings will require more precise microgeometry.
Rising to this manufacturing challenge, Supfina has created a new machine line: the Supfina CenPro S. It combines high workpiece quality with short cycle times, not to mention a smaller footprint and lower operating costs.
TECHNICAL SPECIFICATIONS- Max. workpiece length:500 mm
- Max. workpiece diameter swing:200 mm
- Max. stroke of pin bearing, top dead center to bottom dead center: 100 mm
Supfina LCM Crank
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It's not only versatile, it's cost-effective – designed for crankshafts
Range of application
The Supfina LCM Crank was developed to complement the high-production CenPro and the CenFlex series crankshaft finishing machine and can be quickly changed over to accommodate a variety of workpieces.
It’s also the perfect machine for those who want to superfinish critical crankshaft surfaces (for example, main, connecting rod, thrust bearings, and oil seal) in small to medium volumes.
TECHNICAL SPECIFICATIONS- Floor space required in mm:2684x1788 including coolant filtration trolley
Paint finish:black/gray with red stripe - Compressed air supply:4,5 – 6,0 bar
- Workpiece length:max. 500 mm
- Workpiece diameter swing:max. 160 mm
- Stroke of the connecting rod bearing, upper to lower:max. 80 mm
- Maximum bearing dimensions of the main and connecting rod bearing:
max. Ø 60 mm, maximum width dependent on the diameter and hardness of the bearing - Minimum groove width: min. 14 mm
- Superfinishing tools: Tape; for other workpieces also stone, cup wheel, deburring, and polishing wheel
- Number of superfinishing attachments:
Maximum 4 crankshaft devices or maximum 2 to 4 standard devices
- Floor space required in mm:2684x1788 including coolant filtration trolley
Race finishing
Supfina Solutions: Race finishing
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Antifriction ball bearings and roller bearings
Deep-groove ball bearings, angular ball bearings, cylindrical roller bearings, tapered roller bearings, self-aligning roller bearings: There is almost no limit to the types and sizes of bearings that are used in a wide range of industries.
When it comes to perfect surfaces, there is almost no limit to the solutions that Supfina can offer. Our superfinishing machines more than fulfill our customers’ requirements in terms of economy, versatility, reliability, and quality.
Our unceasing commitment to development work — in cooperation with the antifriction bearing industry — ensures that Supfina technology remains on the cutting edge.
Bearings reduce friction — and we reduce friction in bearings.
Supfina Race
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Machining of roller bearings inner and outer rings
Range of application
The Supfina Race 705 and Race 715 are designed for the Superfinishing operation on raceways of roller bearing inner and outer rings up to 160 mm in diameter.
The track record and benefits of the well established Supfina 725 for larger ring diameters have been converted into this newly developed machine concept.
The Race 705 and Race 715 cater to different diameter ranges. While the Supfina Race 705 can machine rings of up to 90 mm diameter, the Race 715 covers a range of up to 160 mm.
TECHNICAL SPECIFICATIONS- Working stations: 2
- Workpiece diameters:
28 – 90 mm (Race 705)
62 – 160 mm (Race 715) - Workpiece width:
bis 45 mm (Race 705)
bis 65 mm (Race 715) - Taper angle:0 – 30°
Supfina Race 707-717
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Machining of ball bearing raceways inner and outer rings
Range of application
The innovative Supfina Race 707 and Race 717 are setting new standards in Superfinishing ball bearing inner and outer rings. Both have been optimized to meet the highest productivity demands, while achieving best quality results, fast set-up times and superior reliability.
Valuable input from our customers, combined with extensive experience of the Supfina 727 machine types for the large diameter range, are the cornerstones of this newly developed machine concept.
The Race 707 and Race 717 cater to different diameter ranges. While the Supfina Race 707 can machine rings of up to 90 mm diameter, the Race 717 covers a range of up to 180 mm.
TECHNICAL SPECIFICATIONS- Working stations: 2
- Workpiece diameters:
13 – 90 mm (Race 707)
30 – 180 mm (Race 717) - Contact angle: 0 – 55°
Supfina RaceNeo
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Bearings Perfect shape and surface
„From needle bearings in electric motors to roller bearings in offshore wind farms - Supfina develops and produces solutions for the precise machining of rings and rolling elements.“
Flexibility, reliability, safety and highest machining quality have always been the values of the Supfina machines Race, RacePro and RaceFlex. The new Supfina RaceNeo combines these values with the demand for highest machining quality and increasing requirements regarding economic efficiency in series production at the same time.
- Shortest non-productive times and safe loading due to integrated robot
- Small footprint and compact design
- Easy integration into automated production lines
- Modular adaptation of workpiece holder
- Proven core components
Supfina RaceFlex 725-727
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Machining of ball bearing and roller bearing inner and outer rings
Range of application
The Supfina RaceFlex 725-727 is designed to achieve consistent top quality and highest flexibility in Superfinishing Aeroengine bearings, prototypes or other small production batches. Unmatched versatility is based on the combination of up to four different Superfinishing units in one machine.
The powerful rotary and linear oscillator systems for the raceway finishing operation can be complemented with tape finishing units for outer diameters and flanges as well as cup wheel spindles for lip and thrust face operations.
Clamping and centering systems as well as the workpiece drive are just as flexible.
Supfina relies on state-of-the-art modules that have been optimized over decades and that can be adjusted to a new workpiece quickly while requiring only a minimum of type dependent tooling. Due to the intelligent design, set-up times of less than 20 minutes are achieved, supported by NC controlled adjusting axes.
TECHNICAL SPECIFICATIONS- Workpiece diameter:
Type A: 50 – 320 mm
Type B: 100 – 650 mm
Type C: 600 –1200 mm
Type D: 800 –1600 mm - Workpiece width:
Type A: 8 – 100 mm
Type B: 20 – 200 mm
Type C: 50 – 400 mm
Type D: 100 – 450 mm
- Workpiece diameter:
Throughfeed finishing
Supfina Solutions: Centerless machining
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Quantity and quality
Time is money. That old adage applies to the road as much as it does to production. Yet time is not everything: Quality must be perfect as well.
Supfina’s throughfeed-finishing machines help to achieve high production rates with minimal work effort, thanks to reduced retooling times and long service lives for the tools.
But unparalleled quality also is a must — and Supfina delivers. By finishing antifriction bearings, piston rods, and cams to perfection, our machines keep cars and trucks moving smoothly on our roads. And that achievement keeps our customers happy.
Spherical finishing
Supfina Solutions: Spherical finishing
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Fittings technology
Dams, refineries, pipelines, and chemical plants: All of these environments must control fluids and gases. Thus, they require reliable fittings, of which the ball valve is at the heart. That’s because ball-shaped surfaces are the ideal shape for accurately controlling technical processes of this kind.
They must be leak-proof, withstand tremendous loads, and have the ¬longest possible service life. These requirements can be met only if the surface is perfect — and Supfina’s technology makes that perfection possible.
Medical technology
Replacing a hip joint is not as easy as changing a washer in a leaky tap.
From the outset, everything must fit perfectly. Of course, the surgeon’s skill is integral to ensuring that, following the operation, the patient moves freely and without pain. But also crucial is the quality of the artificial femur head and ace¬tabulum, both of which must be finished to an extremely high standard of accuracy.
In many cases today, the preferred material for hip replacement parts is ceramic, which requires very specialized processes and is more difficult to finish than steel. But by using Supfina’s superfinishing technology, we can achieve the high quality that is necessary for these ceramic parts.
Supfina Face
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SUPFINA FACE – THE NEW ROTARY TRANSFER MACHINE GENERATION
Range of application
Trendsetting in flat finishing
Supfina Face – the new rotary transfer machine generation: a flexible rotary transfer solution with a unique machine structure allowing the highest production volumes while also being flexible for maximum cost efficiency.
Flat finishing - Uniquely flexible
With the Face series, Supfina provides the ultimate solution for versatile flat finishing for medium and large workpiece volumes – fast and flexible.
Components from the fields of injection technology, transmission components, hydraulic or engine parts can be produced with the tightest tolerances in the tenth micrometer range and with the highest reliability and efficiency.
Flat Finishing for changing requirements
The development of the Face series was based on the general standards of: cost efficiency, flexibility, safety and environment.
These words are not just buzzwords but stand for specific targets for Supfina in implementing this new face finishing machine generation. This trendsetting machine is designed for continuously changing production requirements so that the machine can be set up extremely quickly with software-supported setup processes. The omission of cooling systems allows a very high degree of energy efficiency.
Retooling and setup can be done conveniently and easily. Supfina has arranged all elements required for this in ergonomically optimal positions.
TECHNICAL SPECIFICATIONS- Workpiece length: up to 200 mm
- Workpiece diameter: up to 200 mm
- Machining diameter: up to 150 mm
- Superfinishing Units: up to 7
- Chuck: up to 8
- Process integration: Flat finishing with cup wheels, brush deburrers, size measurement, tape finishing
Flat finishing
Supfina Solutions: Flat Finishing
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Sealing surfaces and associated issues
Perfection is achieved when the final finishing touches have been applied. In the automotive industry, components must meet the most exacting standards so that, in tough day-to-day running, parts can last for the maximum time.
Whether the part’s surface is flat or curved, our machines achieve the best possible finish. This result is crucial for load-bearing sealing surfaces, because perfect finishes make parts virtually wear-free and tough enough to last.
While our flat finishing machines can give a component the surface perfection it needs, that’s still not enough for us. With each improvement it becomes more difficult to make our machines even better — but this ongoing pursuit of excellence is a challenge that we’re happy to embrace.
Supfina Nano
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Machining planet wheels for automatic transmissions
Range of application
The Supfina Nano machine series with a new machine design covers a wide range of flat finish processing needs.
Components from the fields of injection technology, transmission components, hydraulic or engine parts can be produced with the tightest tolerances in the tenth micrometer range and with highest reliability and efficiency.
Ease of use and very low space requirement at low investment costs are the convincing advantages.
The Supfina Nano has been designed for flat finishing of sealing surfaces of injection components such as holding elements, nozzles or valve plates. Planetary gears are examples of the kinds of gear components that can be processed with this tool.
The Supfina Nano is suitable for everything from small batch production (e.g. the creation of prototypes) to series production in flexible production lines, covering the entire range of applications and always offering optimal reliability and efficiency.
Depending on the intended use, it is possible to integrate a number of different clamping systems into a single machine. Optimal accessibility allows tools to be changed quickly, minimizing changeover time but still ensuring optimal production tolerances.
TECHNICAL SPECIFICATIONS- Workpiece length: 150 mm
- Workpiece diameter: 100 mm
- Machining diameter: 50 mm
- Superfinishing attachments: 1-2
- Spindle speed rpm:
30000
Supfina Face
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Supfina face – the new rotary transfer machine generation
Range of application
Trendsetting in flat finishing
Supfina Face – the new rotary transfer machine generation: a flexible rotary transfer solution with a unique machine structure allowing the highest production volumes while also being flexible for maximum cost efficiency.
Flat finishing - Uniquely flexible
With the Face series, Supfina provides the ultimate solution for versatile flat finishing for medium and large workpiece volumes – fast and flexible.
Components from the fields of injection technology, transmission components, hydraulic or engine parts can be produced with the tightest tolerances in the tenth micrometer range and with the highest reliability and efficiency.
Flat Finishing for changing requirements
The development of the Face series was based on the general standards of: cost efficiency, flexibility, safety and environment.
These words are not just buzzwords but stand for specific targets for Supfina in implementing this new face finishing machine generation. This trendsetting machine is designed for continuously changing production requirements so that the machine can be set up extremely quickly with software-supported setup processes. The omission of cooling systems allows a very high degree of energy efficiency.
Retooling and setup can be done conveniently and easily. Supfina has arranged all elements required for this in ergonomically optimal positions.
TECHNICAL SPECIFICATIONS- Workpiece length: up to 200 mm
- Workpiece diameter: up to 200 mm
- Machining diameter: up to 150 mm
- Superfinishing Units: up to 7
- Chuck: up to 8
- Process integration: Flat finishing with cup wheels, brush deburrers, size measurement, tape finishing
Fine Grinding
Supfina Solutions: Fine Grinding
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Plane parallelism
Soft or hard? From aluminum to zinc, from soft plastics to hard ceramics: No matter the workpiece properties, Spiro 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.
Economy
What’s more, such precision can perfectly meet a customer’s 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.
Supfina Spiro F5
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Supfina spiro - with proven supfina precision
Range of application
Compact design, great performance.
The Supfina Spiro F5 was specially developed for fine grinding smaller workpieces that require highly precise plane parallelism. It’s the perfect fit for your needs.
With this machine, Supfina continues to successfully expand its high-precision Spiro line — all for our customers’ success and profitability.
TECHNICAL SPECIFICATIONS- Disk diameter: 445/475 mm
- Ring width: 120/150 mm
- Maximum pressure: 400 daN
- Workpiece diameter: 4 - 150 mm
- Workpiece thickness: 0,3 - 50 mm
Supfina Spiro F7
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Supfina spiro - with proven supfina precision
Range of application
The flexible Spiro F7 fine-grinding machine is ideal for creating precise flat surfaces on workpieces made from a wide variety of materials and with diameters of 5 mm to 220 mm.
The pneumatically controlled pressure system can be equipped with a force of up to 1800 daN for the process. Workpiece height is continuously adjusted with a no-contact, in-process measuring system that Monitors required height tolerances and parallelism to produce the desired flatness.
TECHNICAL SPECIFICATIONS- Disk diameter: 720 mm
- Ring width: 200 mm
- Maximum pressure: 1800 daN
- Workpiece diameter: 5 - 220 mm
- Workpiece thickness: 0,6 - 80 mm
Supfina Spiro F12
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Supfina spiro - with proven supfina precision
Range of application
The The Spiro F12 — our largest Spiro machine — is designed to process workpieces with diameters of 6 mm to 420 mm and with special height, parallelism, and flatness requirements, all with high precision and cost-effectiveness.
In addition to its very rigid design — allowing for stable processing — great importance was paid to the machine’s ergonomic and visual operation.
TECHNICAL SPECIFICATIONS- Disk diameter: 1160 mm
- Ring width: 341 mm
- Maximum pressure: 3000 daN
- Workpiece diameter: 6 - 420 mm
- Workpiece thickness: 1 - 100 mm
Double-Disk Grinding
Supfina Solutions: Double-Disk Grinding
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Flat components
Accurate flat surfaces are often required even if the workpieces they belong to are not visible. In household appliances, in entertainment technology, in the manufacture of clocks and watches, in the automotive field – nearly every product today contains small, flat parts.
Due to the high demands made on tolerances, evenness and parallelism, the workpieces have to be ground to a very precise degree to enable them to perform as intended. They are often components that the user never sees but which are essential so that the clock, watch, pump, gearbox and car function properly. The manufacturing process requires both quality and economical processes to be in the foreground.Economy
This is where Supfina is setting new standards. Our double-disk grinding technology enables high product quantities to be machined to consistently high standards in the shortest possible times. The result is workpieces with high surface quality, evenness and parallelism while adhering to the tightest of tolerances and keeping costs per part to a minimum.
Supfina Planet V4
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Range of application
With the development of the new and powerful Planet V line Supfina advances into a new dimension of Double Disk Grinding.
The extremely rigid and compact overall machine concept with vertical spindle arrangement was developed together with our customers. For the end user, it offers an excellent finished part with cost-effective production.
Down time is reduced to a minimum thanks to unique equipment features such as the patented tilting navigation and the integrated tool change device. With the Planet V's floor space saving self-contained design (machine can be transported in one piece), the machine can easily be integrated into new or existing manufacturing lines. Loading and unloading can be manual or automatic.
Depending on the part requirements, different tools (conventional/CBN) and methods(through-feed/plunge-cut) can be used. All dressing technologies are of course available.
TECHNICAL SPECIFICATIONS- Max. part height:
Planet V4: 40 mm
Planet V7:100 mm - Max. diameter:
Planet V4: 85 mm
Planet V7: 180 mm
- Max. part height:
Supfina Planet V7
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For flat workpieces
Range of application
The machine series with vertical grinding spindles for the finishing of workpiece diameters up to 180mm. The user can select one of two different grinding processes (throughfeed / pendular-throughfeed) to suit his requirements.
TECHNICAL SPECIFICATIONS- Diameter min.: 10 mm
- Diameter max.: 180 mm
- Thickness min.: 1 mm
- Thickness max.: 100 mm
LeanSystems
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Depending on the number of workpieces to be finished and on their geometric dimensions, superfinishing attachments can be used on conventional grinding or turning machines.
The machines are operated manually. Optional programmable control units are available.
Superfinishing attachments can also be integrated into CNC finishing machines, allowing them to control an attachment’s individual functions as well as the finishing parameters.
Advantages of Supfina attachments
- Tape finishing machines
Changeover from tape to stone finishing possible; dry finishing possible. - Pneumatic finishing machines
Robust, low-cost, all-around machines; small space requirements. - Mechanical finishing machines
Impressively smooth-running properties; parameter stability even at variable loads. - Spherical finishing machines
High-precision finishing of flat and spherical surfaces.
- Tape finishing machines
Superfinishing Attachments
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Depending on the number of workpieces to be finished and on their geometric dimensions, Superfinishing attachments can be used on conventional grinding or turning machines.
The machines are operated manually; optional programmable control units are available.
Superfinishing attachments can also be integrated into CNC finishing machines, where the individual functions of the attachment and the finishing parameters are controlled by the machine's control unit.
Advantages of Supfina attachments:- Tape finishing machines: change-over from tape to stone finishing possible; dry finishing possible
- Pneumatic finishing machines: robust and low-cost allround machines, low small space requirements
- Mechanical finishing machines: impressively smooth run properties, parameter stability even at varying loads
- Spherical finishing machines: High-precision finishing of flat and spherical surfaces
- Tape finishing machines: change-over from tape to stone finishing possible; dry finishing possible
Technology
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TECHNOLOGY FOR EVERY SURFACE. WE ARE THE SPECIALISTS
All that shines…is not necessarily smooth – unless it was processed in a special-purpose Supfina machine to produce the ideal surface.
Whether visible or concealed, in the household, the car or on the high seas – it is both amazing and fascinating to discover the many and varied products and applications that use superfinishing and grinding technologies made possible by Supfina.
Supfina, with its state-of-the-art technology founded on its traditional roots has perfected the technology required today for excellent surface finishes. Our continual research efforts contribute to the development of cutting-edge surface finishing technology to enable us to build machines of the highest quality to empower our customers to achieve the high standards of functional surfaces they require. 
Superfinish
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What is superfinishing? The perfect finish.
Tape and stone superfinishing
Superfinishing is a chip removing machining process. But not one that is comparable to any other. In contrast to the classic lathe turning and grinding methods, there is full surface contact between the tool and the workpiece.
This is precisely the feature that produces the unique characteristics of a perfectly machined surface. This is superfinishing!
By overlaying workpiece rotation and tool oscillation, each individual grain travels along a sinusoidal line – a feature typical for this process.
All the grinding grains in contact with the workpiece create a machining pattern by means of overlaying individual sinusoidal lines that cross each other at a particular angle. This generates a specific, defined pattern of grooves and plateaux, which, in turn, results in the particular advantages of the superfinishing process. The grooves act as channels to aid uniform distribution of the lubricant, while the plateaux guarantee a high percentage contact area.
The tools in use here are either bonded grinding compound on a solid substrate, such as ceramic, or on a flexible backing such as a textile tape.
Uniform lubricant distribution, higher bearing ratio, improved microgeometry, optimized peak heights – this is workpiece quality made by superfinishing.
Machinable materials
The materials used today are many and varied. It is not only steel in all its many alloys and qualities that can be machined using Supfina machines. The superfinishing process is suitable for all those materials that can be machined with geometrically undefined cutting edges.
These materials include ceramic, plastic, monocrystalline silicon, cast iron and non-ferrous metals.
But such coatings as tungsten carbide, chromium and copper are also processed in Supfina machines to provide them with the perfect surface finish.- Machining of various materials using superfinishing technology
- The right machining process for each specific workpiece
- The right superfinishing system for the current requirement
Precision Abrasive Finishing
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What is the best process for producing flat surfaces with the highest precision? Given the wide range of applications for an enormous variety of workpieces, this question poses great challenges for manufacturers.
Supfina has the answer — and three superior methods for getting the job done: double-disk grinding, flat finishing, and fine grinding.
Double-disk grinding
Considered one of the “classic” grinding processes, double-disk grinding is performed when both sides of a workpiece must be ground so that both surfaces are exactly plane and parallel. The workpiece is not fixed for this process. Instead, it is loosely placed in the “nest” of the workpiece carrier. Then both sides of the workpiece are simultaneously machined between two grinding wheels. The upper grinding wheel is adjusted with the “tilt” navigation setting, which allows the upper wheel to maintain the desired angle with the lower wheel. Thus, the gap between the grinding wheels is greater on the infeed side than on the outfeed, resulting in the required amount of stock removal.
Through regular dressing, the grinding wheels maintain their form and sharpness.
Flat finishing
Flat finishing is primarily the process of using a cup wheel to machine a workpiece’s face. The workpiece is clamped in a chuck and rotated. The rotating cup wheel is then precisely advanced to the workpiece’s surface.
Precision slides allow the finishing unit to be adjusted in multiple directions — thus giving the workpiece a characteristic “cross-hatch” pattern, in addition to concave or convex adjustments. With these capabilities a flat, concave, convex, or spherical surface can be produced. One key difference between double-disk grinding and flat finishing is that, for the latter process, the tool is self-dressed during the machining of components and regular wheel dressing is not necessary.
Fine grinding
Fine grinding is also used when workpieces require both surfaces to have plane parallelism, but with more precision than can be achieved with double-disk grinding. Workpieces are placed in carriers that have teeth on the outside diameter. An inner pin ring rotates the carriers as they shift on a stationary outer pin ring in an orbiting manner. Machining takes place between two rotating grinding wheels. The optimal machining force is applied by the upper wheel, which is mounted on an oscillating pendulum. Fine grinding’s central feature is that a fixed number of parts can be processed simultaneously, or in batches.
Each of these machining technologies has its particular strengths. For maximum stock removal as well as output of finished workpieces, double-disk grinding is preferred. For example, within large-scale production, single cams can be ground with a cycle time of fewer than 0.5 seconds with a continuous-feed loading system.
However, for maximum precision and size accuracy, fine grinding is preferred. Hydraulic components, for example, can be finished with an accuracy of ± 0.001 mm.
Flat finishing distinguishes itself in that workpieces are clamped, therefore making the clamped surface a geometric reference point for perpendicularity and flatness. Thus, in the case of transmission components, the perpendicularity of flat surfaces and bores can be ensured.
SpeedFinish®
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Supfina’s SpeedFinish® technology was developed to combine the advantages of grinding with those of superfinishing, i.e. to achieve high removal volumes in the shortest possible finishing times while achieving homogenous surface roughness free of half-moon markings.
The name says it all: it is not only called SpeedFinish®, this system is faster than comparable processes. Workpieces are machined at high speed, which reduces the machining process by as much as 75 percent.
This improves efficiency while, at the same time, improving competitive advantage thanks to reduced costs.
