Device
The device includes the following internal components:
- an electric motor (or a pneumatic motor), which ensures the operation of the device as a whole;
- planetary gearbox, the task of which is to mechanically link the engine and the torque shaft (spindle);
- the clutch is a regulator adjacent to the gearbox, its task is to switch the torque;
- start and reverse (reverse rotation process) carried out by the control unit;
- clamping chuck - fixing all types of attachments in the torque shaft;
- removable battery power supplies (for cordless screwdrivers) with chargers for them.
What to give preference to?
The choice of a cordless or cordless screwdriver is a matter of preference. Let's try to analyze the operation of the tool with a removable power source:
- a definite plus is mobility, which allows you to work where it is difficult to stretch the cord;
- the lightness of the models in comparison with the network counterparts - even the weight of the battery turns out to be a positive point, since it is a counterweight and relieves the hand;
- low power, compensated for by mobility;
- inability to drill solid materials such as thick metal, concrete;
- the presence of a second battery allows you to work smoothly;
- increased level of safety due to the absence of the possibility of electric shock;
- after the guaranteed three thousand cycles, the battery will need to be replaced;
- failure to recharge the power supply will stop operation.
Each manufacturer, characterizing its screwdrivers, indicates additional functions:
- in all P. I. T. models, this is the presence of a reverse, which allows screws and self-tapping screws to be turned out during dismantling;
- the presence of one or two speeds (at the first speed, the wrapping process is carried out, at the second - drilling);
- backlight (some buyers in their reviews write that this is superfluous, while others thank for the backlight);
- the impact function (usually it is in the P. I. T. drills, although it also appeared in the new model - the PSR20-C2 impact driver) actually replaces the drill when drilling durable materials;
- the presence of a non-slip handle allows you to hold the tool on weight for a long time.