€109,000 + Vat

2012 Mikrosa Kronos S250 Centreless Grinding Machine


Cork, Ireland

orCall +353 838108745


Mikrosa Kronos S250 Centreless Grinding Machine

Machine Type: Centreless Grinding Machine

Year: 2012

Grinding Type: Plunge Cut & Through Feed Grinding of Small Parts

Control: Siemens Sinumerik 840D

Condition: Very Good

Notes: Machine is sold ex Works


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LTA Oil Mist Extraction

HKS Coolant Filtration System

Various Grinding Wheels

Grinding Wheel Stands

Machine Description

The Mikrosa KRONOS S 250 is a system for grinding small workpieces. Designed for infeed and throughfeed grinding, its high performance grinding wheel spindles and maintenance-free hybrid roller bearings make this machine ideal for high-speed CBN grinding technology. Multiple production, synchronization, and plunge cut grinding are a few of the machine's capabilities. The KRONOS S 250 is ideal for the production of high-quality small parts.

Thermally stable mineral casting machine bed with excellent vibration dampening

Cross slide systems with one X-axis and one Z-axis, X-axis feed increment 0.01 µm, glass scales standard

Maintenance-free regulating spindle, both sides mounted on roller bearings, regulating wheel rise/fall +40/-20 mm, swivel angle ±5 degrees

Grinding spindle with maintenance-free hybrid roller bearings, circumferential speed of grinding wheel max. 150 m/s (CBN), water-cooled drive motor 15 kW 

Maximum profile accuracy through dressing in the center of the workpiece plane

Control panel swivels to the front and back

Highest safety standard provided by full enclosure

Service-friendly due to ease of accessibility of all units

Simple operation with Mikrosa-specific hardware

Technical Specifications

Min Workpiece Diameter: 1.5mm

Max Workpiece Diameter: 35mm

Max Workpiece Length for Infeed Grinding: 245mm

Grinding Wheel Dimensions:  Ø 450 x 250 x 203.2mm

Grinding Wheel Peripheral Speed: 80m/s

Grinding Wheel Drive Power: 15kW

Regulating Wheel Dimensions: Ø 250 x 250 x 127mm

Regulating Wheel Speed: 5-500rpm

Regulating Wheel Dressing Speed: 1000rpm

Regulating Wheel Drive Power: 5kW

Axes: 5 - X,Z,X4,Z3,SS

Machine Dimensions: 6500x4600x2232mm

Machine Weight: 8,800kg


ModelKronos S250 Centreless Grinding Machine
Serial Number15001010
Machine TypeCentreless Grinding Machine
ControlSiemens Sinumerik 840D
ConditionVery Good
Min Workpiece Diameter1.5mm
Max Workpiece Diameter35mm
Grinding Wheel Peripheral Speed80m/s
Grinding Wheel Drive Power15kW
Regulating Wheel Speed5-500rpm
Regulating Wheel Dressing Speed1000rpm
Regulating Wheel Drive Power5kW
Axes5 - X,Z,X4,Z3,SS
Machine Dimensions6500x4600x2232mm
Machine Weight8,800kg