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Entry-Level Grinding Machine

STUDER, a brand of UNITED GRINDING, offers the S100 high-precision, flexible universal internal cylindrical grinding machine that is suited for the entry-level market.

Like all STUDER cylindrical grinding machines, the S100 has a machine bed made of Granitan. The dampening and thermal characteristics of this material offer consistently good grinding results and help provide precision. During the development process, special attention was given to designing components that are uncomplicated and efficient, making operation and maintenance easy for the operator. Despite this straightforward construction, the features built into the S100 make it suitable for grinding geometrically defined basic forms and contours for a wide range of parts, all of which can be generated with the machine's interpolating axes.

The S100 can be configured to meet each customer's individual needs. It can be equipped with up to two internal grinding spindles, or one internal and one external spindle. In addition to a fixed wheelhead, it can be supplied with a manual wheelhead and a 2.5° Hirth coupling. The optimal combination consists of an automatic wheelhead with a 1° Hirth. A synchronous motor drives the grease-lubricated internal and external belt spindles. The machine is operated by the FANUC 0i-TF PLUS controller, together with the STUDER operating system.

A further advantage of the S100 is the available automation equipment options. The machine can be ordered with a loading interface and an automatic sliding door, enabling automatic operation for large production runs.

Typical workpieces for production on the S100 include collets for toolmaking, bearing rings, ball bearings and cylinders, as well as hydraulic control valves in small runs. External and internal machining of flange parts or grinding of threads or noncircular forms are also possible.

The STUDER Customer Care service is available to provide advice and technical support.

Technical data of the S100:

  • Max. workpiece length: 550 mm (21.65")
  • Max. swing diameter: 425 mm (16.73")
  • Max. internal grinding diameter: 180 mm (7.08")
  • Max. diameter of internal grinding wheel: 63 mm (2.48")
  • Internal grinding spindle speeds: 20,000/40,000/60,000 RPM
  • Max. diameter of external grinding wheel: 400 mm x 40 mm x 127 mm (15.74" x 1.57" x 5") F1N
  • Workhead: Chuck workhead ISO50/110 or chuck workhead MT4/70
  • Machine dimensions WxDx H: approx. 3,090 mm x 2,090 mm x 1,990 mm (121.65" x 82.28" x 78.34")
  • Machine weight: approx. 4500 kg (9,920 lbs.).

For more information contact:

UNITED GRINDING North America Inc.


Miamisburg, OH 45342


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