KRONOS S 250

The KRONOS S 250 is designed for plunge cut and throughfeed grinding of workpieces in the diameter range of 1.5 to 35 mm and with a plunge cut width up to 245 mm. The perfect machine for the mass production of small precision workpieces.

Machine description:

  • Working range 1.5...35 mm, plunge cut length up to 245 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. 150 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 SINUMERIK 840D sl control system

Possible technologies:

  • Plunge cut grinding
  • Throughfeed grinding
  • 6° inclined plunge cut grinding
  • Plunge cut grinding in mass production
  • Oscillation grinding
  • Grinding of multiple operations in one cycle by offsetting the workpiece or grinding spindle

Specifications

Workpiece diameter

mm

1.5-35

Plunge grinding workpiece length max.

mm

245

Grinding wheel    

Grinding wheel diameter, max.  

mm

450

Grinding wheel width, max.

mm

250

Grinding wheel peripheral speed (optional CBN)     m/s 80 (120/150)

Grinding wheel driving power  

kW

11/15

Regulating wheel 

 

 

Regulating wheel diameter, max. mm 250
Regulating wheel width, max. mm 250
Regulating wheel rpm range, infinitely variable min-1           5-500
Regulating wheel driving power kW  5
     

SINUMERIK 840D sl control system