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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 DK42 (B,E)/DK52 (E) 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 DK42 (B,E)/DK52 (E) 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
DK42 (B,E) DK42 BL (EL) DK42 BS (ES) DK52 (E) DK52 S (ES)
Nominal voltage
V
400/3- 400/3- 400/3- 400/3-
400/3-
Nominal current A 7,2 7,2 7,2 9,5 9,5
Nominal power W 3900 3900 3900 5200 5200
Power output W 3000 3000 3000 4000 4000
Nominal frequency Hz 50 50 50 50 50
Speed (full load) 1/min 160/310/490 130/260/410 230/460/720 130/260/410 160/310/490
Drill Ø in Concrete mm 70 - 400 * 90 - 500 * 50 - 300 110 - 500 * 80 - 450 *
Weight kg 19 19 19 22,9 22,9
Degree of water protection IP 55
Tool fixture 1 1/4" UNC
* 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 DK42 B (E)
Gear change position/Speed 1/min 1/160 2/310 3/490
Drill Ø concrete mm 230 - 400 110 - 220 70 - 150
Water volume approx. l/min 1,9 - 2,6 1,3 - 1,9 1 - 1,6
Operating data DK42 BL (EL)
Gear change position/Speed 1/min 1/130 2/260 3/410
Drill Ø concrete mm 300 - 500 130 - 270 90 - 180
Water volume approx. l/min 2,2 - 2,9 1,5 - 2,1 1,2 - 1,7
Operating data DK42 BS (ES)
Gear change position/Speed 1/min 1/230 2/460 3/720
Drill Ø concrete mm 150 - 300 75 - 150 50 - 100
Water volume approx. l/min 1,6 - 2,2 1,1 - 1,6 0,9 - 1,3
Operating data DK52 (E)
Gear change position/Speed 1/min 1/130 2/260 3/410
Drill Ø concrete mm 320 - 500 160 - 320 110 - 210
Water volume approx. l/min 2,3 - 2,9 1,6 - 2,3 1,4 - 1,9
Operating data DK52 S (ES)
Gear change position/Speed 1/min 1/160 2/310 3/490
Drill Ø concrete mm 240 - 450 120 - 240 80 - 160
Water volume approx. l/min 2 - 2,7 1,4 - 2 1,1 - 1,6
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