Mag Drilling Up To 30mm In Metal With The FEIN Cordless Screwdriver

To achieve optimum work results with the FEIN cordless screwdriver ASCM 18-4 QM(P) using the HOLESAW ADAPTER and the QUICKIN PLUS TCT mag DRILLS, it is important to observe general guidelines depending on the application. The following maximum outputs can be achieved:

Max. Drilling Ø in steel S235, material thickness 20 mm with carbide mag drill QIP: Ø 30 mm

HAND-GUIDED MAG DRILLING WITH HM MAG DRILL QUICKIN PLUS IN GENERAL STRUCTURAL STEEL S235

First step: Centre drilling

3rd gear, 2,000 rpm, accessory: CENTRING DRILL

Centre drilling in one operation.
Sufficient cooling / lubrication.
When the carbide mag drill hits the drill bit, change gear if necessary depending on the diameter.
Intermediate cooling and chip removal is recommended for material thicknesses > 10 mm.
After the carbide mag drill has broken through the material, return from the finished drill hole in rotary mode.
In general, when interrupting the drilling process (e.g. for cooling), the centre drill should not be brought to a standstill in the drill hole, but should always be pulled out of the drill hole while the drill is rotating.

Second step: Core drilling

2nd gear, 850 rpm, accessories: HM CORE DRILL Ø 14 - 30 mm

As soon as the carbide mag drill hits the material, the speed must be reduced to 850 rpm. Centre drilling then takes place at 850 rpm instead of 2,000 rpm. The work progress during centre drilling is correspondingly slower.
Best drilling result with material thickness < 12 mm.
Maximum material thickness 20 mm.

HAND-GUIDED mag DRILLING IN STAINLESS STEEL 1.4301 WITH HM CORE DRILL QUICKIN PLUS

First step: Centre drilling

2nd gear, 850 rpm, CENTRING DRILL

Centre drilling in one operation.
Intermediate cooling / lubrication during the drilling process. Important: Enable maximum cooling.
After material breakthrough of the carbide core drill, return from the finished drill hole in rotary mode.
In general, when interrupting the drilling process (e.g. for cooling), the centre drill should not be brought to a standstill in the drill hole, but should always be pulled out of the drill hole while the drill is rotating.

Second step: Mag drilling

1st gear, 430 rpm, carbide mag drill Ø 14 - 30 mm

As soon as the carbide mag drill hits the material, the speed must be reduced to 430 rpm. Centre drilling then takes place at 430 rpm instead of 850 rpm. The work progress during centre drilling is correspondingly slower.
Best drilling result with material thickness < 12 mm.
Maximum material thickness 20 mm.
For material thicknesses > 12 mm, pay particular attention to axiality when drilling to prevent the centre drill from breaking. If the axiality is inadvertently changed during drilling (user always holds the machine at an angle), the centre drill can break.