Used Mikrosa Centreless Grinders for Sale 10

Mikrosa has specialised exclusively in centreless grinding machine production for decades, and this focused expertise has produced machines that define the precision and productivity benchmarks for centreless grinding applications. The company's position within the United Grinding Group provides shared technology development with other specialist grinding brands while maintaining the centreless focus.

The KRONOS series forms the core product range. KRONOS S 250, S 300, and S 400 cover successively larger workpiece diameters and grinding wheel sizes. The thrufeed configurations handle continuous production of straight cylindrical components — pins, valve stems, dowel rollers, shaft segments — at production rates that no other grinding method matches. Components feed continuously through the grinding zone between the grinding wheel, regulating wheel, and work blade, emerging at rates of hundreds to thousands of parts per hour.

Infeed grinding configurations handle shouldered and profiled workpieces where the part must stop during grinding for the wheel to create features. These cycles are slower than thrufeed but handle the complex geometries that many precision bearing and hydraulic component designs require.

The KRONOS-S series addresses precision bearing-class production where dimensional tolerances and surface finish requirements exceed what standard centreless grinders reliably produce. Mechanical rigidity, spindle precision, and control system refinement combine to deliver roundness, cylindricity, and surface finish specifications required for ball bearing and roller bearing manufacturing.

Automatic loading and unloading integration is critical for centreless grinding productivity. Mikrosa machines integrate with vibratory feeders, conveyor systems, and robotic loading to create complete grinding cells that operate unattended through production shifts. Cell integration complexity should be matched to production volume — simple manual loading suits lower volumes, while full automation justifies its cost only at sustained high production rates.

CNC control systems on current Mikrosa machines are Siemens-based with extensive Mikrosa-specific software that manages the complex setup and compensation that precision centreless grinding requires. Work blade height, grinding wheel dressing cycles, and regulating wheel angle all interact in ways that require dedicated control system support.

When evaluating used Mikrosa centreless grinders on Exapro, verify spindle accuracy through vibration measurement and precision test components, check work blade condition and feed mechanism function, test automatic loading system if equipped, inspect dressing system accuracy, and confirm that the machine's wheel sizes and workpiece capacity match your production requirements. Machines from automotive bearing or precision component production environments typically come with extensive process documentation that supports evaluation.