Studer S100
Key Specifications
X Travel
Z Travel
Max Spindle
Spindle Power
max travel speed x
max travel speed z
How much does the Studer S100 cost?
Estimated price range
Our best estimate for a cnc grinding machine in this class — not a quote from United Grinding (Studer). Configuration moves it a long way.
Overview
The Studer S100 is a CNC cylindrical grinding machine for workpieces up to 550 mm (21.65 inch) long and 420 mm (16.53 inch) in diameter, on a 225 mm (8.86 inch) center height. Its B axis swivels from -10° to +190°, and the slides travel 285 mm (11.22 inch) in X and 800 mm (31.5 inch) in Z.
Two of the listed figures have to be read together. The largest grinding wheel is 400 mm (15.75 inch) in diameter and 40 mm (1.57 inch) wide, while the maximum spindle speed is given as 60,000 rpm. A 400 mm wheel cannot run anywhere near that speed, so the speed figure describes an internal grinding spindle carrying a small wheel, and the 400 mm wheel belongs to external work. Studer's table does not say which spindle the 6.8 kW power figure refers to. Ask for the spindle list of the configuration being quoted before judging stock removal on either operation.
The envelope favours short, wide parts. A 420 mm diameter against a 550 mm length is the proportion of flanges, bushes and chucked housings, not of long shafts, and the swivel from -10° to +190° lets the head turn right round to face such a part with a different spindle. Z travel of 800 mm against the 550 mm workpiece length leaves the slide room to clear the part.
Rapid speeds are 10,000 mm/min (394 inch/min) in X and 20,000 mm/min (787 inch/min) in Z. For comparison, the S31 has 370 mm (14.6 inch) of X travel and an 11.5 kW (15.6 hp) spindle at 3,200 rpm, and the S22 lists 15 kW (20.5 hp). On spindle power the S100 is the lightest of the three.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 285 mm (11.22 inch) |
| Max Travel Speed X | 10,000 mm/min (394 inch/min) |
| Z-Axis Travel | 800 mm (31.5 inch) |
| Max Travel Speed Z | 20,000 mm/min (787 inch/min) |
| Spindle Motor Power | 6.8 kW |
| Max Spindle Speed | 60,000 rpm |
| Max Grinding Wheel Diameter | 400 mm (15.75 inch) |
| Max Grinding Wheel Width | 40 mm (1.57 inch) |
| Swiveling Range B | -10 – +190 ° |
| Workpiece Length | 550 mm (21.65 inch) |
| Workpiece Diameter | 420 mm (16.53 inch) |
| Center Height | 225 mm (8.86 inch) |
Specifications sourced from studer.com — verified 2026-10-03
Strengths & Limitations
Strengths
- B axis swivels from -10° to +190°, so different spindles can be turned to the part in one clamping
- Takes workpieces up to 420 mm (16.53 inch) in diameter on a 225 mm (8.86 inch) center height
- 800 mm (31.5 inch) of Z travel against a 550 mm (21.65 inch) workpiece length
- Spindle speeds up to 60,000 rpm for small-wheel internal grinding
- External wheels up to 400 mm (15.75 inch) in diameter and 40 mm (1.57 inch) wide
Limitations
- Spindle power is listed at 6.8 kW, below the 11.5 kW (15.6 hp) of the S31 and the 15 kW (20.5 hp) of the S22
- Workpiece length stops at 550 mm (21.65 inch)
- Studer's table gives no maximum workpiece weight for this model, so heavy chucked parts need to be confirmed with the maker
- Wheel width is limited to 40 mm (1.57 inch), which sets the widest plunge cut possible in one infeed
Best For
Frequently Asked Questions
01
Up to 550 mm (21.65 inch) long and 420 mm (16.53 inch) in diameter, on a center height of 225 mm (8.86 inch). Studer's table for this model does not state a maximum workpiece weight, so ask for it if the parts are heavy.
02
They describe different spindles. A wheel 400 mm (15.75 inch) in diameter and 40 mm (1.57 inch) wide is an external grinding wheel and runs far slower than 60,000 rpm. The 60,000 rpm maximum is the top of the range for internal grinding with small wheels. The table gives a single power figure of 6.8 kW without saying which spindle it applies to.
03
From -10° to +190°. That range lets the wheelhead be turned from one grinding spindle to another facing the same workpiece, which is how external diameters, faces and bores are finished without taking the part out of the chuck.
04
The S31 has 370 mm (14.6 inch) of X travel and an 11.5 kW (15.6 hp) spindle at 3,200 rpm. The S22 has 310 mm (12.2 inch) of X travel, 850 mm (33.5 inch) of Z and 15 kW (20.5 hp). The S100 has 285 mm (11.22 inch) of X, 800 mm (31.5 inch) of Z and 6.8 kW, with a speed range that reaches 60,000 rpm.
05
The X axis has a maximum travel speed of 10,000 mm/min (394 inch/min) and the Z axis 20,000 mm/min (787 inch/min). Travel is 285 mm (11.22 inch) in X and 800 mm (31.5 inch) in Z.
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