About Studer

Used Studer Cylindrical Grinding Machines for Sale

Resell CNC is your Simple. Reliable. and Trusted.® source for used Studer cylindrical grinding machines — including the full universal external cylindrical lineup (favorit, favoritCNC, S11, S22, S23, S31, S33, S36, S41), production external grinders (S121, S122, S131, S141, S151), the S100 and S110 internal cylindrical platforms, S121/S131/S141 Radius internal grinders, plus legacy Studer cylindrical grinders running on Granitan® mineral cast beds with the brand's signature Bordeaux red and white finish.

Fritz Studer AG was founded in 1912 by Fritz Studer in Steffisburg, Switzerland, when he built his own cylindrical grinder because no machine on the market could produce the precise parts he needed. More than a century later, Studer has delivered over 21,000 cylindrical grinding machines worldwide and is one of the most trusted names in precision cylindrical grinding. Key milestones include the introduction of hydrodynamic spindle bearings in 1965, the patented Granitan® S103 mineral casting machine bed in 1976 (still the foundation of every Studer machine today), and the move to the Bordeaux red and white machine livery in 1985. In 1994 Studer joined what is now the UNITED GRINDING Group and forms the core of the Cylindrical grinding technology group together with Schaudt and Mikrosa. Headquartered in Thun (Steffisburg), Switzerland, with around 800 employees and representation in 40 countries, Studer is supported in North America by UNITED GRINDING North America in Miamisburg, Ohio, providing sales, service, parts, training, and certified machine rebuilds.

Looking to sell your Studer? Resell CNC buys used Studer machines nationwide — any model, any generation, any condition. Free appraisal within 24 hours, competitive offers, and we handle all rigging and transportation. Call (844) 478-8181 or email sales@resellcnc.com.

Sell My Studer

Don't see the Studer you're looking for?
New inventory arrives daily. Create a free alert and we'll notify you the moment a matching Studer hits our inventory. Or call (844) 478-8181 — our team sources specific Studer models on request.

Studer Universal & Production External Cylindrical Grinders

Studer's universal external cylindrical lineup spans from the compact S11 and S22, the new S23 (premiered 2025), and the favorit and favoritCNC up through the best-selling S31 and S33 production-class universals (offered in four center distances of 400, 650, 1,000, and 1,600 mm and a 175 mm height of centers, supporting workpieces to 150 kg) and into the large-workpiece S41 (1,000/1,600 mm centers, 225/275 mm height of centers, 250 kg, with the StuderGuide® guideway system, linear-motor axes, and direct-drive B-axis). Production external grinders include the S121, S122, S131, S141, and S151. The S141 in particular has had one of its strongest sales decades.

Studer Internal Cylindrical & Radius Grinders

For internal cylindrical grinding, the S100 and S110 cover small to mid-sized bore work, with up to four internal grinding spindles for chuck and shaft applications. The S121 Radius, S131 Radius, and S141 Radius platforms add radius internal cylindrical grinding for complex bore profiles and multi-feature internal geometry. All Studer machines run on the patented Granitan® S103 mineral cast bed, providing the vibration damping, thermal stability, and wear resistance that define the brand.


Founded	1912 by Fritz Studer in Steffisburg, Switzerland
Headquarters	Thun (Steffisburg), Switzerland
Parent Group	UNITED GRINDING Group, Cylindrical grinding technology group (with Schaudt and Mikrosa)
US Operations	UNITED GRINDING North America, Miamisburg, Ohio (sales, service, parts, training, rebuilds)
Best Known For	Precision cylindrical grinding (external, internal, radius); patented Granitan® mineral cast bed; StuderGuide® guideway and linear-motor technology; signature Bordeaux red and white machine finish
Popular Models	favorit, favoritCNC, S11, S22, S23, S31, S33, S36, S41, S121, S122, S131, S141, S151, S100, S110
CNC Controls & Software	C.O.R.E. Panel and OS (current); Fanuc on favoritCNC; StuderWIN, StuderGRIND, Studer-Pictogramming, STUDER QuickSet; optional WireDress and Flexload robotic loading
Industries Served	Aerospace (largest segment), precision engineering, automotive, machine tools, medical, tool & die, energy

What to Look for When Buying a Used Studer

Inspect the Granitan® bed and guideway system. Every Studer machine since 1976 is built on a patented Granitan® S103 mineral cast bed that provides the vibration damping, thermal stability, and wear resistance Studer is famous for. Inspect the bed for cracks, oil saturation, or chips. On the S41, verify the StuderGuide® guideway and linear-motor axes traverse smoothly across full travel. On S31, S33, and favorit, confirm ball-screw axis condition and the swiveling wheelhead B-axis (down to 0.00005°) indexes accurately.

Test the spindle, wheelhead, and tailstock. Studer cylindrical grinders use hydrodynamic spindle bearings, the brand's hallmark since 1965. Test grinding spindle runout, listen for bearing noise, and check thermal stability after warm-up. Verify each wheelhead variant (up to four external wheels or three internal spindles on S41 — over 30 head combinations possible) cycles correctly. Check workhead and tailstock alignment, in-process Marposs gauging if equipped, and coolant filtration and chiller (Studer typically runs on oil for highest precision).

Check the C.O.R.E. control, software, and automation. Current Studer machines run on the C.O.R.E. Panel and C.O.R.E. OS platform launched in 2021. Confirm StuderWIN, StuderGRIND, and Studer-Pictogramming software licenses transfer with the machine, along with any STUDER QuickSet, WireDress contact-free dressing, or Flexload six-axis robotic loading. New favoritCNC machines run a modern Fanuc control. Older Studer CNCs may use Fanuc or earlier controls — confirm OS version and license status.

Studer Universal External Cylindrical Grinders

favorit, favoritCNC & S23 (Compact and Versatile)

The favorit is a CNC universal cylindrical grinder for short to long workpieces with four center distances (400/650/1,000/1,600 mm), 175 mm height of centers, and 150 kg piece weight. The favoritCNC, introduced in 2025, brings modern Fanuc controls and built-in automation. The new S23 compact universal cylindrical grinder, premiered in 2025, extends the lineup at entry level.

S31 & S33 (Best-Selling Universal Production)

The S31 and S33 are Studer's flagship universal cylindrical grinders for small to large workpieces in single, small, and large series production. Both share four center distances, 175 mm height of centers, and 150 kg piece weight, with a swiveling wheelhead for external, internal, and face grinding in one clamping. The S33 is currently Studer's best-selling machine; the 1,000th S31 was delivered in 2018.

S36 & S41 (Productive and Large)

The S36, introduced in 2022, is Studer's productive universal cylindrical grinder for high-throughput single-clamping work. The S41 is the large-workpiece universal CNC, with 1,000 or 1,600 mm distances between centers, 225 or 275 mm height of centers, 250 kg piece weight, equipped with the StuderGuide® guideway, linear-motor X and Z, and direct-drive B-axis.

Studer Production, Internal & Radius Grinders

S121, S122, S131, S141 & S151 (Production External)

Studer's production external cylindrical grinders cover medium to large workpieces in volume manufacturing. The S121 and S122 handle compact production, the S131 covers mid-range, and the S141 is the long-bed production platform with one of its strongest sales decades. The S151 handles the largest workpieces in the production family.

S100, S110 & Radius Internal Grinders

The S100 and S110 are universal internal cylindrical grinders for chuck and shaft applications, with multiple internal spindle configurations. The S121 Radius, S131 Radius, and S141 Radius add radius internal cylindrical grinding for complex bore profiles and multi-feature internal geometry common in aerospace and automotive work.

How to Sell Your Used Studer

Studer machines hold exceptional resale value due to the brand's century-long Swiss precision reputation, the dominance of favorit, S31, S33, and S41 in cylindrical grinding worldwide, and ongoing OEM parts and certified rebuild support through UNITED GRINDING North America. Low-hour S31, S33, S41, S141, and favorit machines are in particularly high demand on the secondary market.

Resell CNC buys used Studer machines, every model and generation, nationwide.

Contact us at (844) 478-8181 or sales@resellcnc.com.
Free appraisal within 24 hours, no obligation.
Accept the offer and we handle rigging, transport, and logistics.

Frequently Asked Questions About Used Studer Machines

Are used Studer cylindrical grinding machines reliable?

Yes. Studer is widely regarded as the global benchmark for precision cylindrical grinding, with over 21,000 machines delivered since 1912. Granitan® mineral cast beds, hydrodynamic spindle bearings, StuderGuide® guideways, and Swiss build quality hold accuracy across long production runs. Parts and certified rebuilds are supported through UNITED GRINDING North America in Miamisburg, OH.

What CNC control and software does Studer use?

Current Studer machines run on the C.O.R.E. Panel and C.O.R.E. OS platform with StuderWIN operation, StuderGRIND programming, and Studer-Pictogramming for visual setup. The new favoritCNC uses a modern Fanuc control. Programming runs on the machine or external PC, and STUDER QuickSet reduces setup times.

What should I inspect before buying a used Studer?

Focus on Granitan® bed condition, hydrodynamic spindle bearings, guideway system (StuderGuide® on S41, ball screws on S31/S33/favorit), B-axis indexing, wheelhead and spindle configuration, tailstock and workhead alignment, Marposs in-process gauging, coolant filtration and chiller, and C.O.R.E. or Fanuc control state with software license transfer.

Which Studer models hold their value best?

The S31, S33, S41, S141, and favorit hold the strongest residual values, driven by demand from aerospace (Studer's largest segment), automotive, and precision engineering. Low-hour machines with WireDress or Flexload automation command additional premium. Call (844) 478-8181 for valuations.

What is Granitan® and why does it matter?

Granitan® S103 is a patented mineral casting (granite-epoxy composite) developed by Studer in 1976 and used as the bed of every Studer cylindrical grinder since. It provides much better vibration damping than cast iron, exceptional thermal stability, and wear resistance, which is the foundation of Studer's accuracy. About 2,500 tons of Granitan® was used in the first 1,000 S31 machines alone.

How do I sell my used Studer?

Call (844) 478-8181 or email sales@resellcnc.com. We buy every Studer model nationwide. Free 24-hour appraisal.