The KRONOS S 125 offers maximum precision for small workpieces. The compact, versatile centerless grinding machine combines speed with top quality.

Machine description:

  • Working range 0.5...30 mm, plunge length up to 120 mm
  • Highest values in cycle time and cost effectiveness
  • Short set-up and changeover times
  • Thermally stable, vibration-damping GRANITAN® machine bed
  • Cross-slide systems for grinding and regulating wheels
  • Grinding spindles mounted on hybrid bearings for max. 120 m/s
  • Exact reproducibility of grinding results, even in tolerance ranges of ±0.5 µm
  • Designed for mass production
  • Highest safety standard thanks to full enclosure
  • Maintenance and service friendly SIEMENS Sinumeric 840D sl control system

Possible technologies:

  • Plunge cut grinding
  • Throughfeed grinding
  • 15° inclined plunge cut grinding
  • Plunge cut grinding in mass production
  • Oscillation grinding
  • Grinding of multiple operations in a single cycle


Workpiece diameter
Infeed grinding workpiece length max.

0.5-30 mm
120 mm
Grinding wheel  
Diameter, max.
Width, max.
Peripheral speed (optional CBN)
Driving power

400 mm
125 mm
63 (120) m/s
11/15 kw
Regulating wheel
Diameter, max.
Width, max.
rpm range, infinitely variable
Driving power

250 mm
125 mm
5-500 rpm
5 kw 

SINUMERIK 840D sl control system