The motor of the SR 25 is based on the principle of the switched reluctance motor (SR = switched reluctance).
The SR 25 drill has 6 different speed gears. Therefore the drilling speed is easily adjusted.
The drill has an overload clutch. Whilst drilling, a lot of kinetic energy is created. If, for any reason something goes wrong, all this kinetic energy is released. This clutch protects the user, the drill and the equipment.
The motor temperature is measured and registered at all times. A thermal protective switch will switch off safely when the maximum temperature is exceeded..
The SR 25 has an oil pump, this ensures optimal gear lubrication for high efficiency, high durability and less maintenance. The new and highly effective oil pump takes ensures optimal lubrication for the first fast step of gear, even in vertical operation.
The SR 25 has a water cooling system. The water flow is controlled through the interspace between the motor case and the case sleeve. With this arrangement the electrical part is completely separated from the water and thus the electrical safety is guaranteed. Therefore it is even possible to drill upside down.
The drill has an antifriction-element. This ring ensures that the drill bit can be easily removed after using the drill.
In comparison with most drills, which have a plastic housing, the Weka hand drills are made out of steel and aluminum. This improves the lifetime of the equipment.
The Weka drills comply with the European safety regulations.
|Nominal Power||3700 W – 230 V|
|Load speed||230* / 280 / 340 / 410 / 490 / 570 rpm|
|Nominal torque||110 Nm|
|Rated current||16 A|
|Drilling Ø in concrete||approximately 70 – 370 mm|
|Tool Fixture||1 1/4" or M33/3|
|*||This speed is power reduced|