Studer S20 — used cylindrical grinding machine ready for pickup at the previous owner's site

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Sell Studer grinding machines: cylindrical and precision grinders

Non-binding first estimate, usually within 24 hours on working days. Direct purchase: payment before pickup. A service by MBR — active since 2020 in 15+ countries.

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Fritz Studer AG is one of the world references for precision cylindrical grinding machines. What Hermle is to milling, Studer is to grinding: an S31 or S33 in good condition holds a noticeably higher value on the used market than comparable Japanese or Korean machines.

If you want to sell a Studer grinding machine, you’ll get a no-obligation assessment from us.

Studer lines and their market positioning

S31 — universal grinder with more than 1,000 machines delivered

The S31 is an external cylindrical grinding machine for workpieces up to 349 mm in diameter (center distances of 400, 650, 1,000 or 1,600 mm); the current generation runs C.O.R.E. OS. Widely deployed across the German automotive industry, precision engineering, and hydraulics manufacturing. Very liquid used market — many end buyers, short marketing times.

S33 — universal, also with internal grinding head

The S33 adds to the S31 the ability to combine internal and external cylindrical grinding on one machine. For operations that grind both shafts and bores, the S33 is the first choice. That also raises its used price: internal grinding is a differentiator many buyers actively look for.

S41 — high-performance universal with B-axis

The S41 is Studer’s high-performance model: a CNC B-axis for contour grinding (e.g. cams, crankshafts), higher rigidity from a swivel head, and a large rotary index table for multiple grinding wheels. Buyers are typically OEMs in aerospace, bearing manufacturers, and specialized suppliers.

S151 — universal internal cylindrical grinder for large parts

The S151 is a CNC universal internal cylindrical grinding machine with a 550 mm swing diameter over the table, designed according to the manufacturer for large spindle shafts, spindle housings, rotor shafts, and large flange parts. Large external workpieces up to 549 mm in diameter are ground by the S41 described above.

Valuation by model

We have no reliable public price ranges for the S31, S33, S41, and S151: of the Studer listings we reviewed on Maschinensucher in October 2026, only a small minority state a price, and none of them was an S31, S41, or S151. The value is determined by build year, grinding spindle condition, control generation, options (internal grinding head, B-axis, loader), and documentation.

What determines the price of a Studer

Grinding spindle: the single most critical factor. We assess it through diagnostics (vibration measurement, runout, bearing temperature) — a current report from the manufacturer is the most valuable document you can bring.

Control: older control generations run reliably but have less market demand than current systems with CNC integration and process monitoring.

Internal grinding head: machines with this option command a noticeable premium over pure external grinders.

Dresser condition: the diamond dresser and its holder show how precisely the machine can continue to grind. Worn dressers are inexpensive to replace but need to be factored into the valuation.

Maintenance history: documented oil and lubricant changes following the Studer maintenance schedule significantly boost buyer confidence.

Why Studer stays so strong on the used market

Studer has been building grinding machines since 1912. That 110-plus-year tradition explains why used Studer machines are sought after worldwide:

Part of the United Grinding Group: Studer belongs to the United Grinding Group (alongside Blohm, Jung, Schaudt, Mikrosa, Mägerle). The spare-parts ecosystem — spindles, control components, guideway strips — covers even older machines.

Manufactured in Germany and Switzerland: machine building in Thun (Switzerland), measurement systems and precision components from German and Swiss supplier plants.

Qualified operators worldwide: a buyer in Sweden, Turkey, or India knows their operators can retrain on it — that lowers the barrier to purchase.

Active international demand: Germany, Switzerland, Nordic countries, the US, Japan, South Korea, India — buyers for well-maintained Studer machines exist everywhere. That keeps the price from collapsing.

Selling your Studer machine — next step

Send us: model (S31/S33/S41/etc.), build year, spindle hours (external and internal separately, if applicable), control version, condition, and three to five photos.

Model guides with value-determining options: Studer S20 favorit, Studer S33, Studer S41.

Request a free valuation of your Studer — No obligation, payment before pickup.

Sell your premium-brand machine. Free valuation.

We check Studer grinding machines by year of manufacture, control, operating hours and maintenance records. Non-binding first estimate, usually within 24 hours on working days. Direct purchase: bank transfer before pickup.

Request a free valuation

FAQ

Frequently Asked Questions

What is my Studer S33 worth?

We have no reliable public price range for the Studer S33: on the used-machine marketplaces most listings are posted without a price. Decisive factors are the condition of the grinding spindle (main and internal grinding spindle), the condition of the dresser, tailstock precision, and whether options like automatic workpiece loading are present.

Do you also buy older Studer machines — say, from the 1990s?

Yes. Studer machines are known for exceptional longevity. An S31 or S21 from the late 1990s in good mechanical condition (clean guideways, functioning grinding spindle) still has an active market, particularly in Eastern Europe, Turkey, and India. We inspect older machines carefully and make an honest offer — even if it's more modest.

How important is the grinding spindle to the price?

The grinding spindle is the decisive factor for Studer machines — even more so than for general machine tools. A spindle replacement is a considerable cost. If the spindle is in poor condition, that reduces market value accordingly. A current spindle test report (runout, vibration, temperature) is the single most valuable supporting document you can provide for a Studer.

What sets the S41 apart from the S31 and S33 on the used market?

The S41 is Studer's high-performance external cylindrical grinder with a CNC B-axis for contour grinding and higher rigidity — it commands a noticeably higher used price than the S31 and S33. We have no reliable public price range for the S41. The S31 and S33 are the core business for precision shaft grinding among mid-sized manufacturers — very liquid, many buyers.

Do you also buy Studer grinding machines with a defective spindle?

Yes. A Studer with a known spindle defect isn't worthless — the machine bed, guideways, B-axis, and control retain substantial value. We make an offer that realistically prices in the restoration effort. Describe the defect as precisely as possible and we can give you a meaningful assessment faster.

Do you also buy the Studer S151 and large external grinding models like the S41?

Yes. The S151 is a CNC universal internal cylindrical grinding machine with a 550 mm swing diameter over the table, while the S41 grinds large external workpieces up to 549 mm in diameter. Send us the model, build year, spindle hours, and photos, and you will get an initial assessment from us.

Which options raise the Studer price the most?

An internal grinding spindle (internal and external grinding on one machine) — strongly value-adding. Automatic workpiece loading/feeding — raises production value. CNC B-axis (contour grinding) — a premium over standard lines. In-process measuring station (e.g. Marposs) — value-adding.

How long does pickup of a Studer grinding machine take?

Grinding machines are more delicate to transport than milling or turning machines: granite reference surfaces and guideways need to be protected from shocks and moisture. We organize the transport with the care precision machinery requires — cushioned vehicles, correct anchoring. Disassembly and pickup are part of the normal process for standard sizes (S31-S41): from first contact to pickup typically takes 7-15 working days.

How can I roughly assess the condition of my Studer myself?

Three simple checks: run the grinding spindle briefly with a test workpiece and check for unusual vibration or noise. Measure the runout at the spindle mount (should be under 1 µm on a new machine; a realistic used machine under 3-5 µm). Check the guideway surface: a clean guideway bed with no visible grooving is a good sign. We inspect this more closely on-site — but these three points give a first indication.

Do you pay by cash or bank transfer?

We pay by bank transfer. Direct purchase: bank transfer before pickup; no machine leaves your site without confirmed payment.

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We will send a non-binding first estimate, usually within 24 hours on working days.

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+49 (0) 6196 9727560