The WOTAN® S3I in its configuration as WOTAN® S3I-F is suitable for high-precision cylindrical grinding to process internal diameters of chuck parts with a swing diameter of up to 400mm and a workpiece length of 400mm that are clamped on one side only (“flying”) without additional support – especially suitable for grinding internal front surfaces as well as internal diameters.
As an alternative, the machine can be configured with an extended work area as WOTAN® S3I-L. This version makes it possible to process shaft-type components with a legth of up to 750mm and a diameter of up to 250mm, apart from chuck parts clamped on one side only, for which, due to their geometry, a steady rest needs to be added.
Since time is always important, we rely on our optimised procedures: Our powerful drives ensure a quick availability with additional work and peripheral modules reducing costly non-productive times. You stand to benefit from this through reduced cycle times, greater throughput and more satisfied customers.
Key Facts
- Machining of chuck and shaft-shaped parts (steady-rest guided)
- Internal cylinder/ cone, internal polygons, internal screw threads and more
- Up to 4 applicable internal grinding tools (fixed on B2 axis)
- High rigidity through the use of cast beds / Hydropol beds
- WOP-TouchTM user interface
For #cylinder #taper #polygon #thread #eccentric
For somewhat larger components, our WOTAN® S6I is also suitable. For even more machining possibilities we offer the universal cylindrical grinding machines WOTAN® S3U and WOTAN® S6U.
without longitudinal adjustment
with longitudinal adjustment of the workpiece spindle headstock

400 mm
400 mm

400 mm
750 mm

400 kg
400 kg

350 mm
350 mm

400 mm
500 mm
Axis speed
0–15.000 mm/min
Tool round table
Direct drive/ external drive with 0.00005°
With up to 4 tool positions
Workpiece mandrel drive
Rolling bearing, belt drive without measuring system
Rolling bearing, direct drive with measuring system as C‑axis
Hydrostatic bearing, direct drive with measuring system as C‑axis
Options
- Revolver headstock with up to 4 internal grinding mandrels
- Workpiece headstock with B axis
- Work headstock with high resolution C‑axis
- Centre-zero feeler
- Fixed and/or powered dressing tools
- Pre-process measurement (detect position of part and set zero point)
- Post-process measurement (determine ø, check distances, set new zero point, etc.)
- Coolant preparation
- Suctions
- Motor cooling
- Remote maintenance
- and much more