STEPCRAFT 840 - 6.2 Drive of the Machine; 6.3 Other Specifications

15
Type of machine
Overall size
(Length x Width x Height)
Travel distance
Weight
inch
STEPCRAFT 420
552 x 440 x 510 mm
21.46 x 17.13 x 15.75 inch
420 x 300 x 140* mm
16.54 x 11.81 x 3.15
inch
15,0 kg
24.5 lbs
STEPCRAFT 600
737 x 558 x 510 mm
28.74 x 21.77 x 15.75 inch
600 x 420 x 140* mm
23.62 x 16.54 x 3.15
inch
19,0 kg
35.6 lbs
STEPCRAFT 840
968 x 745 x 510 mm
38.1 x 29.3 x 20.08 inch
840 x 600 x 140* mm
11.81 x 8.27 x 3.15
inch
31,0 kg
57.66 lbs
* For constructional reasons the travel distance of the Z-axis is getting reduced at the end positions of the X-
axis by 10 mm / 0.39 inch.
6.2 DRIVE OF THE MACHINE
The axes of the machine are driven by means of bipolar stepper motors. All used motors have 1.8°/full step. They
are connected to the drive shafts via axial coupling.
The machine is equipped with round threaded spindles TR8x2 with a feed/rotation of 2.0 mm (STEPCRAFT 210)
or TR10x3 with a feed/rotation of 3.0 mm (STEPCRAFT 300 to 840).
Type of machine
Thread
X-axis
Y-axis
Z-axis
STEPCRAFT 210
8x2 mm
1,4 A
1,8 A
1,4 A
STEPCRAFT 300
to
STEPCRAFT 840
10x3 mm
1,4 A
1,8 A
1,4 A
6.3 OTHER SPECIFICATIONS
STEPCRAFT
210
STEPCRAFT
300
STEPCRAFT
420
STEPCRAFT
600
STEPCRAFT
840
Clamping
surface (X Y)
222 x 290 mm
8.74 x 14.42
inch
222 x 380 mm
8.74 x 14.96
inch
312 x 500 mm
12.28 x 19.69
inch
432 x 680 mm
17.01 x 26.77
inch
612 x 920 mm
24.09 x 36.22
inch
Working space
(X Y Z)
210 x 210 x 40
mm
8.27 x 8.27 x
1.57 inch
210 x 300 x 80*
mm
8.27 x 11.81 x
3.15 inch
300 x 420 x
140* mm
11.81 x 16.54 x
5.51 inch
420 x 600 x
140* mm
16.54 x 23.62 x
5.51 inch
600 x 840 x
140* mm
23.62 x 33.07 x
5.51 inch
Passage
height
95 mm
3.74 inch
115 mm
4.53 inch
175 mm
6.89 inch
175 mm
6.89 inch
175 mm
6.89 inch
Torsional
stiffness (20N)
(X Y Z)
0,07 mm – 0,12
mm
0,06 mm – 0,11
mm
0,06 mm – 0,11
mm
0,09 mm – 0,13
mm
0,10 mm – 0,14
mm
Repeatability
+/- 0,04 mm
+/- 0,04 mm
+/- 0,04 mm
+/- 0,05 mm
+/- 0,05 mm
Programmable
resolution
0,005 mm
0,005 mm
0,005 mm
0,005 mm
0,005 mm
Backlash
approx. 0,08
mm (with
software
adjustable to
0,00 mm)
approx. 0,08
mm (with
software
adjustable to
0,00 mm)
approx. 0,08
mm (with
software
adjustable to
0,00 mm)
approx. 0,08
mm (with
software
adjustable to
0,00 mm)
approx. 0,08
mm (with
software
adjustable to
0,00 mm)
Maximum
speed
1.800 mm/min
70.87 inch/min
3.000 mm/min
118.11 inch/min
3.000 mm/min
118.11 inch/min
3.000 mm/min
118.11 inch/min
3.000 mm/min
118.11 inch/min
Spindle
Round-Thread
spindle 8x2
Round-Thread
spindle 10x3
Round-Thread
spindle10x3
Round-Thread
spindle 10x3
Round-Thread
spindle 10x3
Linear guide
STEPCRAFT-
aluminium
profile (EN AW-
STEPCRAFT-
aluminium
profile (EN AW-
STEPCRAFT-
aluminium
profile (EN AW-
STEPCRAFT-
aluminium
profile (EN AW-
STEPCRAFT-
aluminium
profile (EN AW-