Mikrosa KRONOS S
This model was not found in Mikrosa's current lineup when we checked on 2026-10-03 . It may be a superseded or older model; the specifications below are as we last recorded them.
Key Specifications
grinding wheel diameter
grinding wheel width
regulating wheel diameter
max workpiece diameter through feed
min workpiece diameter through feed
max workpiece diameter infeed
How much does the Mikrosa KRONOS S cost?
Estimated price range
Our best estimate for a cnc grinding machine in this class — not a quote from Mikrosa. Configuration moves it a long way.
Overview
The Mikrosa KRONOS S is listed as a centerless grinder for small parts: its through-feed range is listed from 0.5 mm (0.02 in) to 80 mm (3.1 in) in diameter, on a 400 mm (15.7 in) grinding wheel paired with a 250 mm (9.8 in) regulating wheel. This model no longer appears in Mikrosa's lineup, and the listed figures are unconfirmed by any maker document.
What sets the table apart is the bottom of the range. A 0.5 mm minimum diameter puts needles, fine pins and wire-like parts within reach, and the automation row fits that kind of work: besides PROFINET and robot loading it lists a vibratory bowl feed and a parts chute, the usual way to handle small parts in bulk. For plunge work the limits are 150 mm (5.9 in) in diameter and 250 mm (9.8 in) in length, and since the wheel is up to 250 mm (9.8 in) wide, a full-length part can sit entirely within the wheel.
The tightest numbers on the page need reading with their qualifier. Roundness is given as ≤ 0.001 mm (1 µm) in optimized conditions, not in production, and surface finish as Ra ≤ 0.1 µm (4 µin). The grinding wheel runs at up to 60 m/s with 14.6 hp behind it; the regulating wheel has 6.7 hp.
A second set of inch rows does not line up with the metric ones. It gives a capacity of 4.72", a 16" grinding wheel, a 10" regulating wheel and 500 RPM for the regulating wheel, against a listed range of 2 to 100 RPM. Nothing in the table says which set is right, so match these rows to the nameplate of the unit on offer before relying on either.
Full Specifications
| Parameter | Value |
|---|---|
| Grinding Wheel Diameter | 400 mm (15.7 in) |
| Grinding Wheel Width | Up to 250 mm (9.8 in) |
| Regulating Wheel Diameter | 250 mm (9.8 in) |
| Max Workpiece Diameter Through Feed | 80 mm (3.1 in) |
| Min Workpiece Diameter Through Feed | 0.5 mm (0.02 in) |
| Max Workpiece Diameter Infeed | 150 mm (5.9 in) |
| Max Workpiece Length Infeed | 250 mm (9.8 in) |
| Grinding Wheel Peripheral Speed | Up to 60 m/s |
| Regulating Wheel Speed Range | 2 – 100 RPM |
| Roundness Achievable | ≤ 0.001 mm (1 µm) in optimized conditions |
| Surface Finish Achievable | Ra ≤ 0.1 µm (4 µin) |
| Machine Base | Granitan mineral casting |
| Dressing System | CNC diamond form roll and single-point (both wheels) |
| CNC Control | Siemens 840D sl with Mikrosa grinding software |
| Automation Interface | PROFINET, robot loading, vibratory bowl feed, parts chute |
| Capacity | 4.72" |
| Grinding Wheel Dia | 16" |
| Gw Power | 14.6 hp |
| Regulating Wheel Dia | 10" |
| Rw Power | 6.7 hp |
| Rw RPM | 500 RPM |
Specifications sourced from machinetools.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Through-feed grinding from 0.5 mm (0.02 in) up to 80 mm (3.1 in) in diameter
- Listed roundness of ≤ 0.001 mm (1 µm) in optimized conditions and Ra ≤ 0.1 µm (4 µin) surface finish
- Wheel width of up to 250 mm (9.8 in) equals the 250 mm (9.8 in) maximum infeed length
- Automation row includes a vibratory bowl feed and parts chute as well as robot loading and PROFINET
- Granitan mineral casting base, with CNC diamond form roll and single-point dressing on both wheels
Limitations
- The 1 µm roundness figure is qualified as optimized conditions; no production figure is listed
- Grinding wheel power is 14.6 hp and peripheral speed up to 60 m/s, which limits stock removal on parts toward the 150 mm (5.9 in) infeed maximum
- The inch rows (4.72" capacity, 500 RPM regulating wheel) conflict with the metric rows (80 mm and 150 mm diameters, 2 to 100 RPM)
- Machine weight, floor space and workpiece weight are not listed
Best For
Frequently Asked Questions
01
The listed minimum for through-feed grinding is 0.5 mm (0.02 in), and the maximum is 80 mm (3.1 in). In infeed grinding the listed maximum is 150 mm (5.9 in) in diameter and 250 mm (9.8 in) in length. No minimum is given for infeed work.
02
The table lists roundness of ≤ 0.001 mm (1 µm) and a surface finish of Ra ≤ 0.1 µm (4 µin). The roundness figure is stated for optimized conditions, so it describes what the machine can reach with a tuned setup, not a guaranteed production result.
03
A 400 mm (15.7 in) grinding wheel up to 250 mm (9.8 in) wide with 14.6 hp, and a 250 mm (9.8 in) regulating wheel with 6.7 hp. Separate inch rows give 16" and 10" for the same wheels. Grinding wheel peripheral speed is up to 60 m/s.
04
One row gives a speed range of 2 to 100 RPM and another gives 500 RPM. The listed figures do not say what the higher value refers to. The capacity row of 4.72" likewise differs from the 80 mm (3.1 in) and 150 mm (5.9 in) diameters, so confirm both points on the specific machine.
Videos
Mimu Mach
Mimu Mach
More from Mikrosa
Other CNC Grinding Machines
Thielenhaus Infinity 900 – 1100
Amada WINSTAR SP
Danobat ILD-600
Junker JUCENTER 6000
Junker QUICKPOINT 3000
