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Kronos M 400 |
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Kronos M 400
- Modular and flexible
The modular construction of the Mikrosa
Kronos M 250 / Kronos M 400 with 6 (optionally 7) CNC axes
enables optimum adaptation to the grinding project.
The basis of the Kronos M consists of a
Granitan
machine bed with excellent thermal stability and vibration damping
qualities.
The machine can be outfitted with either an overhung
bearing grinding spindle (Kronos
M 250) or a portal-bearing grinding spindle (Kronos M 400),
depending on the grinding project.
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The high-precision grinding
spindles with roller bearings reach normal grinding wheel
circumferential speeds of 63 m/s. Grinding spindles with hybrid
ceramic spindle bearings can reach grinding wheel circumferential
speeds of 120 m/s and reduce the cycle time in connection with CBN
high speed technology, resulting in considerably higher
profitability.
For the highest grinding
quality, optional grinding spindles with hydrodynamic bearings can
be used, which run very quietly and have a very long life
expectancy. Another feature of the
Kronos M 250 / Kronos M 400 is the very high system rigidity,
which is already set in the in the development phase and allows
workpieces such as tap crosses to be finished to the highest
quality standards. The axes may be adjusted in increments of 0.1 μm.
Possible technologies with the Kronos M:
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Through-feed grinding
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Plunge cut grinding
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Plunge cut grinding in mass
production
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Surface grinding or
oscillation (Kronos
M 250, glide-bearing grinding spindle)
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Grinding Area |
Metric |
Imperial |
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Min. workpiece diameter: |
1.5 mm |
0.059" |
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Max. workpiece diameter: |
100 mm |
3.937" |
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Max. workpiece length: |
245 mm |
9.646" |
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Grinding Wheel |
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Max. diameter: |
610 mm |
24" |
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Max. width: |
250 mm |
9.84" |
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Bore dia.: |
304.8 mm |
12" |
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Regulating Wheel |
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Max. diameter: |
350 mm |
13.8" |
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Max. width: |
250 mm |
9.84" |
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Bore dia.: |
127 mm / 152 mm |
5" / 6" |
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Grinding Wheel Drive |
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Circumferential speed constant: |
yes |
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Circumferential speed m/sec: |
63 |
m/sec |
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CBN grinding circumferential
speed †: |
120 |
m/sec † |
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Drive output: |
22 kW |
29.5 hp |
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Regulating Wheel Drive |
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Speed range, infinite: |
5 - 600 |
rpm |
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Dressing speed: |
600 |
rpm |
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Drive output: |
5.7 kW |
7.6 hp |
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Dimensions |
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Set-up area required,
(foundation): |
2300 mm x 1100 mm |
7.5' x 3.6' |
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Total area (including switch
cabinet): |
5450 mm x 3050 mm |
17.8' x 10' |
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Maximum height: |
2000 mm |
6.6' |
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Machine weight: |
10,500 |
kg |
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† = option |
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Change device with integrated upper bearing
shells |
Plunge cut grinding |
Portal-bearing grinding spindle |
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Characteristics:
- Highest grinding quality
- Machine base of 'Granitan' for excellent
temperature stability and vibration damping qualities
- Very high system rigidity
- Optimum adaption to the grinding
- Extensive range of accessories
- More profitability
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Click Here to view or download the
Kronos machine range brochure
(in PDF format) |
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