Weka DK 42 B Instrucciones De Servicio página 13

By the addition of water through the diamond drill bit (3) via the ball valve (1a) the drilled material is
flushed away and the tool cooled (wet drilling). The drilling tool, the diamond drill bit (3), is a tube drill
which is fitted with soldered-on or welded-on segments impregnated with diamonds.
If necessary, the flushing water is extracted through a water collecting ring (4) by means of a suction unit.
The machine may not be used for a different purpose or with a different tool.
The DK42B/DK52 is splash-water proof and thus corresponds to the protection class IP 55.
The motor is water-cooled, i.e. the cooling and flushing water for the core bit flows through the cooling
spiral of the motor before being flushed through the core bit.
On proper use water can not enter the machine. Thus it is possible to drill overhead without any further
precautions.
In the DK42B/DK52 there is an additional low voltage circuit breaker integrated, i.e. after a break of the
mains, the machine does not start unintended after return of voltage.
3.1 Specifications
Machine type
Nominal voltage
Nominal current
Nominal power
Power output
Nominal frequency
Speed (full load)
Drill Ø in Concrete
Weight
Degree of water protection
Tool fixture
* Holes of more than Ø 300 mm can only be produced with particularly stable rigs and the use of heavy
duty dowels for fastening. Upward Ø 400 it is required to use particularly aggressive core bits with low
specific pressure and high concentricity.
** If the motor is prepared for 60Hz nominal frequency the data of speed increases and the data of drillØ
decreases by the factor of 1,2.
Operating data DK 42 B
Gear change position/Speed
Drill Ø concrete
Water volume approx.
Operating data DK 42 BL
Gear change position/Speed
Drill Ø concrete
Water volume approx.
Operating data DK 42 BS
Gear change position/Speed
Drill Ø concrete
Water volume approx.
Operating data DK 52
Gear change position/Speed
Drill Ø concrete
Water volume approx.
Operating data DK 52 S
Gear change position/Speed
Drill Ø concrete
Water volume approx.
DK 42 B
V
400/3
A 7,2
W 3900
W 3000
Hz 50
1/min 160/310/490 130/260/410 230/460/720 130/260/410 160/310/490
mm 70 - 400 *
kg 19
1/min
mm
l/min
1/min
mm
l/min
1/min
mm
l/min
1/min
mm
l/min
1/min
mm
l/min
DK 42 BL DK 42 BS
400/3 400/3
7,2 7,2
3900 3900
3000 3000
50 50
90 - 500 * 50 - 300
19 19
IP 55
1 1/4" UNC
1/160
230 - 400
1,9 - 2,6
1/130
300 - 500
2,2 - 2,9
1/230
150 - 300
1,6 - 2,2
1/130
320 - 500
2,3 - 2,9
1/160
240 - 450
2 - 2,7
10
DK 52 DK 52 S
400/3
400/3
9,5 9,5
5200 5200
4000 4000
50 50
110 - 500 * 80 - 450 *
22,9 22,9
2/310 3/490
110 - 220 70 - 150
1,3 - 1,9 1 - 1,6
2/260 3/410
130 - 270 90 - 180
1,5 - 2,1 1,2 - 1,7
2/460 3/720
75 - 150 50 - 100
1,1 - 1,6 0,9 - 1,3
2/260 3/410
160 - 320 110 - 210
1,6 - 2,3 1,4 - 1,9
2/310 3/490
120 - 240 80 - 160
1,4 - 2 1,1 - 1,6