The Studer S21
CNC is
a versatile universal cylindrical grinding machine
designed for the grinding of small workpieces in individual as
well as
small and large-batch production.
It can be automated and is especially
suitable for grinding high precision workpieces, as required by
the aerospace, precision mechanics and hydraulic / pneumatic
sectors.
Main Dimensions
Metric
Imperial
Distance between centres:
400 mm
15.7"
Centre height:
125 mm
4.9"
Max. workpiece weight:
30 kg
66 lbs
Cross Slide (X)
Max. travel:
254 mm
10"
Speed:
0.001 - 5000 mm/min
0.000,04" - 197 ipm
Resolution:
0.0001 mm
0.000,004"
Longitudinal Slide (Z)
Max. travel:
483 mm
19"
Speed:
0.001 - 10,000 mm/min
0.000,04 - 394 ipm
Resolution:
0.0001 mm
0.000,004"
Wheelhead
Swivel range:
-15 -
+195 deg
Swivel axis:
2.5 / 1
deg Hirth
Fine adjustment:
0.0001
deg †
Driving power:
5.5 kW
7.5 hp
Grinding wheel left:
400 x 40 (50F5) x 127 mm
16" x 1.5" (2" F5) x 5"
Grinding wheel right:
400 x 40 (50F5) x 127 mm
16" x 1.5" (2" F5) x 5"
Internal grinding:
HF
spindle
Workhead
Speed range:
1 - 1500
rpm
Fitting taper:
MT 4 / Ø70 mm
2.75"
Driving power:
3.0 kW
4 hp
Load during live grinding:
70 Nm / 100 Nm
52 / 74 ft lbs
Concentricity precision:
0.0004 / 0.0002 mm
0.000016" / 0.000008"
C axis for form grinding:
0.0001
deg †
Tailstock
Fitting taper:
MT
3
Travel of barrel:
35 mm
1.37"
Barrel diameter:
50 mm
1.97"
Fine adjustment:
± 40 µm
0.0016"
Swivelling machine table:
n/a
Control:
Fanuc 21i-TB
(Fanuc 16i-TB †)
Straightness of surface line:
0.002 mm / 400 mm
0.000,08" / 15.7"
Total power input:
20
kVA
† = option
Characteristics:
Turret wheelhead which can be swivelled
manually or automatically
Option: High resolution B axis
Frequency controlled motor grinding spindle for
external and internal grinding.
C axis for the workhead for form and
thread grinding
†
Workhead for universal use in live grinding
operations and for grinding between centres
(Option: workhead specially designed for use with chucks)
