Studer S22

$180,000 - $280,000 Updated 2026-03-17

Key Specifications

X Travel

250 mm (9.8 in)

center height

125 mm (4.9 in)

distance between centers

400 / 650 mm (15.7 / 25.6 in)

max workpiece weight

80 kg (176 lb)

workhead speed range

1 - 1,500 RPM

max grinding wheel diameter

400 mm (15.7 in)

Overview

The Studer S22 is a CNC universal cylindrical grinding machine designed for medium-sized workpieces where flexibility, footprint efficiency, and cost-effectiveness matter as much as precision. With a center height of 125 mm, distances between centers of 400 or 650 mm, and a maximum workpiece weight of 80 kg, the S22 occupies the compact end of Studer's universal cylindrical grinder lineup — sitting below the S33 in capacity while offering the same Granitan mineral casting foundation and StuderGRIND software suite that define the Studer brand.

The S22 is built around the same Granitan S103 mineral casting base used across Studer's lineup, providing 6–10x better vibration damping than cast iron and superior thermal mass for short-term temperature stabilization. For a compact machine where the grinding gap is smaller and thermal gradients can affect proportionally more of the workpiece, the Granitan base delivers the same measurable precision advantage it does on larger Studer platforms — making the S22 capable of surface finishes and roundness values that would be difficult on a cast-iron budget machine of comparable size.

The wheelhead on the S22 can be configured as a fixed-angle or manually swiveling unit, with external grinding spindle power of 5.5 kW and speeds up to 3,200 RPM — adequate for both conventional abrasive and CBN wheel applications. An optional internal grinding spindle extends the machine's scope to ID grinding, making the S22 capable of complete cylindrical grinding (OD, ID, and face) on workpieces that fit within its 125 mm center height. The workhead covers 1 to 1,500 RPM, providing adequate range for small precision components ground at high speed or larger workpieces requiring slower rotation.

The S22 runs the same Fanuc 31i control with StuderGRIND software as the rest of the Studer range, meaning operators familiar with the S33 or S31 can transition to or from the S22 without retraining. StuderGRIND covers cylindrical, form, and thread grinding with integrated dressing cycles, reducing the programming complexity for shops running diverse workpiece families. Pricing for a new Studer S22 typically falls in the $180,000–$280,000 range, making it the most accessible entry point into Studer's universal CNC cylindrical grinding lineup for production and job shop environments.

Full Specifications

Parameter	Value
Center Height	125 mm (4.9 in)
Distance Between Centers	400 / 650 mm (15.7 / 25.6 in)
Max Workpiece Weight	80 kg (176 lb)
Workhead Speed Range	1 - 1,500 RPM
Max Grinding Wheel Diameter	400 mm (15.7 in)
Max Grinding Wheel Width	63 mm (2.5 in)
External Spindle Power	5.5 kW (7.4 HP)
External Spindle Speed	Up to 3,200 RPM
Wheelhead Configuration	Fixed or manually swiveling; optional internal grinding spindle
X-Axis Travel	250 mm (9.8 in)
Rapid Traverse X	10,000 mm/min (394 ipm)
Rapid Traverse Z	15,000 mm/min (591 ipm)
Machine Base	Granitan S103 mineral casting
CNC Control	Fanuc 31i with StuderGRIND software
Software	StuderGRIND (cylindrical, form, thread grinding + dressing)

Specifications sourced from studer.com — verified 2026-03-28

Strengths & Limitations

Strengths

Granitan S103 mineral casting base delivers the same vibration damping and thermal stability as Studer's larger machines in a compact, lower-cost platform — precision is not compromised by the smaller size
Compatible with the full StuderGRIND software suite for cylindrical, form, and thread grinding, giving operators access to Studer's complete programming and dressing cycle library
Optional internal grinding spindle extends the S22 to full OD/ID/face grinding capability, covering most cylindrical grinding work on small and medium components in a single clamping
Compact footprint and lower price point ($180,000–$280,000) make the S22 the most accessible entry into Studer's universal cylindrical grinder lineup without sacrificing brand quality
1–1,500 RPM workhead speed range and CBN wheel compatibility provide full process flexibility for precision components across aerospace, medical, and automotive material families

Limitations

80 kg maximum workpiece weight and 125 mm center height restrict the S22 to small and medium components — shops grinding heavy shafts, large toolholders, or rolls need the S33 or larger platform
At 400 or 650 mm maximum between-centers, the S22 cannot accommodate long shafts — shops with frequent long-shaft work should evaluate the S33's 1,000 and 1,600 mm variants
Fixed or manually swiveling wheelhead (vs. automatic turret on the S33) means switching between OD and ID grinding requires manual intervention, adding setup time in mixed-operation environments

Best For

Small and medium precision component manufacturers grinding collets, sleeves, bearing races, and medical implant components where a compact, cost-effective Studer platform is preferred Job shops seeking an affordable entry into the Studer ecosystem with full StuderGRIND software compatibility for future upgrade path to larger machines Medical device manufacturers grinding bone anchors, implant shafts, and surgical tool components where the 125 mm center height covers the full range of typical orthopedic workpieces Toolroom and prototype grinding environments requiring flexible OD and optional ID grinding capability on a compact machine with minimal floor space

Frequently Asked Questions

01 How does the Studer S22 differ from the S33?

The S33 has a 175 mm center height (vs. 125 mm on the S22), a higher max workpiece weight of 150 kg (vs. 80 kg), larger 508 mm wheel diameter capability, and an automatic turret wheelhead with up to two external and one internal spindle. The S22 is the more compact, lower-cost machine for smaller workpieces where the S33's additional capacity is unnecessary. Both share the same Granitan S103 base, Fanuc 31i control, and StuderGRIND software.

02 Can the S22 grind with CBN wheels?

Yes. The S22's 5.5 kW external grinding spindle with speeds up to 3,200 RPM supports CBN wheel applications. CBN is commonly used on hardened steel components to extend wheel life and maintain tighter size tolerances over long production runs. The StuderGRIND software includes CBN-specific dressing and grinding cycles. Wheel diameter is limited to 400 mm, which is adequate for most CBN applications on the workpiece sizes the S22 handles.

03 What control does the Studer S22 use?

The S22 runs a Fanuc 31i CNC with Studer's proprietary StuderGRIND software interface. StuderGRIND provides graphical programming for cylindrical, form, and thread grinding with integrated dressing cycle management. Operators familiar with any Studer machine can work on the S22 without additional software training, since the software environment is consistent across the S22, S33, S31, and larger Studer platforms.

04 Is the S22 suitable for medical component grinding?

Yes, the S22 is well-suited to medical device manufacturing. Its compact center height covers the majority of orthopedic implant and surgical tool geometries, and the Granitan base provides the thermal stability needed for the tight tolerances and surface finish requirements typical of medical implants. The machine can achieve Ra < 0.1 µm surface finishes and roundness values below 0.5 µm with proper setup — both within the requirements of most medical component specifications.

05 What does a new Studer S22 cost?

New Studer S22 machines typically price in the $180,000–$280,000 range depending on center distance variant (400 or 650 mm), wheelhead configuration, optional internal grinding spindle, and automation accessories. It is Studer's most affordable universal CNC cylindrical grinder. Used machines trade below this range — a well-maintained 5–10 year old S22 may be available for $60,000–$150,000 depending on condition and configuration.