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 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.
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:
Through-feed grinding
Plunge cut grinding
Plunge cut grinding in mass
production
Grinding Area
Metric
Imperial
Min. workpiece diameter:
1.5 mm
0.059"
Max. workpiece diameter:
100 mm
3.937"
Max. workpiece length:
245 mm
9.646"
Grinding Wheel
Max. diameter:
610 mm
24"
Max. width:
250 mm
9.84"
Bore dia.:
304.8 mm
12"
Regulating Wheel
Max. diameter:
350 mm
13.8"
Max. width:
250 mm
9.84"
Bore dia.:
127 mm / 152 mm
5" / 6"
Grinding Wheel Drive
Circumferential speed constant:
yes
Circumferential speed m/sec:
63
m/sec
CBN grinding circumferential
speed †:
120
m/sec †
Drive output:
22 kW
29.5 hp
Regulating Wheel Drive
Speed range, infinite:
5 - 600
rpm
Dressing speed:
600
rpm
Drive output:
5.7 kW
7.6 hp
Dimensions
Set-up area required,
(foundation):
2300 mm x 1100 mm
7.5' x 3.6'
Total area (including switch
cabinet):
5450 mm x 3050 mm
17.8' x 10'
Maximum height:
2000 mm
6.6'
Machine weight:
10,500
kg
† = option
Change device with integrated upper bearing
shells
Plunge cut grinding
Portal-bearing grinding spindle
Characteristics:
Highest grinding quality
Machine base of 'Granitan' for excellent
temperature stability and damping qualities
Very high system rigidity
Optimum adaption to the grinding
Extensive range of accessories
More profitability
Click Here to view or download the
Kronos machine range brochure
(in PDF format)
