Centerless Grinding Machine SCHAUDT MIKROSA KRONOS S 250

- for wear compensation of the grinding wheel and the infeed movement for grinding
and for dressing (X1 axis) with recirculating roller guides
- Adjustment by means of digital three-phase servomotor via ball screw drive
- smallest infeed increment 0.1 µm
- Equipment with glass scale Z-slide
- arranged on the X-slide
- for transverse movement of the grinding wheel during dressing (Z2 axis) with recirculating roller guides
- Adjustment by means of digital three-phase servomotor via ball screw drive
- smallest infeed increment 0.1 µm
grinding wheel headstock
- with integrated protective cover in cast steel design
- attached to Z-slide
- Mounting of a grinding spindle with bearings on both sides
- 6° inclined

- mounted on both sides in anti-friction bearings
- suitable for 250 mm wide grinding wheels
- long-life grease lubrication
- Bore diameter of the grinding wheel 203.2 mm
- Max. Speed 7.200 min-1

- Main drive for grinding wheel circumferential speed 40....150 m/sec
via three-phase main spindle motor 15 kW (water-cooled)
Remark:
Use of recooling system or use of an existing cooling circuit
Coolant conditions:
- Filter fineness 100 µm
- Cold water flow 8 l/min
- Cooling capacity 2750 W
- Coolant inlet temperature <25°C
- Cooling medium - water or low-viscosity oils

- for wear compensation of the regulating wheel and the feed motion for dressing
(X4 axis) with recirculating roller guides
- Adjustment by means of digital three-phase servomotor via ball screw drive
- smallest infeed increment 0.1 µm
- Equipment with glass scale
Z-slide
- arranged on the X-slide
- for transverse movement of the regulating wheel during dressing (Z3 axis) with recirculating roller guides
- Adjustment by means of digital three-phase servomotor via ball screw drive
- smallest infeed increment 0.1 µm
bearing housings
- with drive for control spindle
- arranged on the Z-slide
regulating wheel lowering
- manual clamping
- Adjustment via adjusting spindle
- Maximum lowering -20 to +40 mm
- Angle of inclination at maximum lowering +/- 5°

- mounted on both sides in anti-friction bearings
- suitable for 250 mm wide regulating wheels
- long-life grease lubrication
- Bore diameter of the disc 127 mm
- Control spindle drive via three-phase servo motor 5 kW
- Dressing speed max. 1,000 min-1
- Working speed max. 500 min-1

- Centerless external cylindrical grinding machine KRONOS S 250 for plunge-cut grinding (6°)
- Dynamic balancing device make DITTEL
- Grinding wheel holder with balancing weights
- Stand for control spindle with portal bearings
- Device for adjusting the height of the workpiece
- Coolant main valve (electric) for connection to central coolant supply
- machine light
- Equipping the feed axis Z2 with glass scale
- Equipping the feed axis Z3 with glass scale
- Interface for a central coolant system
- Interface for coolant return
- Automation for loading and unloading rotor shafts
- Extension of the control components integrated in the control cabinet
- Electrical and mechanical interface for loading and unloading system
- Interface for a DataMatrixCode reader
- Electrical interface for measurement control (32 I/O)
- Workpiece support holder for plunge grinding
- Workpiece support for plunge grinding
- Pneumatically actuated hold-down device
- Needle nozzles for plunge grinding (depending on workpiece)
- Adjustable stop for workpiece support holder
- Additional monitoring of complete machine
- second control panel at the rear of the machine
- operating handset
- Cut detection Grinding wheel
- Bleed detection Control wheel
- Cut Recognition Workpiece
- grinding wheel flushing
- Additional regulating wheel unit
- fire extinguishing system
- Extension of the switch cabinet cooling system

- Cooling of the control point
- Automatic warm-up

The machine was connected to a central coolant supply (grinding oil), and is
therefore supplied without its own coolant system.
The cooling of the grinding motor as well as the switch cabinet was carried out by decentralised service water cooling and must be ensured by a new cold water unit if necessary.