In this article, we want to talk about another tool from the famous Bosch company, namely a cordless drill - a Bosch PSR 14.4 LI screwdriver. The numbers and the last two letters of the marking indicate the voltage of the screwdriver batteries, as well as the type: lithium - ion.
In general, in a home tool kit, a drill - a screwdriver is very necessary. This tool for the needs of the home combines a large number of screwdrivers of various types and sizes, as well as a classic drill. Thanks to the batteries, it can be used not only in the apartment, but also on the road, in the country, in the absence of electrical outlets nearby, and in construction, for example, on the roof. The lack of binding to the outlet saves you from having to pull a long wire to it. But now directly to the description of the tool itself, its characteristics and capabilities.
The Bosch PSR 14.4 cordless drill driver is primarily designed for screwing fasteners:
self-tapping screws with heads of various shapes and sizes. Here it all depends on the bits you have. With this screwdriver, you can tighten the screws for a Phillips screwdriver and screws with heads for a flat screwdriver or wrench.
Due to a sufficiently large torque: 20 Nm, this screwdriver is suitable for mounting profiled sheets with roofing screws, including in a metal frame. The Bosch PSR 14.4 screwdriver is equipped with a sufficiently capacious battery (1.5 Ah), which will allow you to operate it comfortably even with large amounts of work without complicating yourself in constantly recharging the batteries.
Also in this screwdriver there is a drilling function, that is, one more speed. In general, in the name, the word drill must be placed after the word screwdriver, since it is the second function that is its main one. But nevertheless, you can use it to drill various materials: wood, plastic, metal. True, thick metal (more than 2 mm) is not recommended to be drilled, since the batteries will quickly sit down. It is better to use a wired drilling tool for this, and more powerful.
The screwdriver has an electronic speed selection system, as well as a convenient switch.
The torque value is set using a special clutch by turning the ring and aligning the marks with the torque value. Changing bits in the chuck is very convenient and fast. This is realized thanks to the keyless chuck with Auto-Lock function.
The screwdriver has a reverse function for turning out self-tapping screws. Also, this function will be useful in the case of using a screwdriver as a drill, when the drill turned out to be jammed. For convenience of work on the screw gun there is an indicator of the direction of rotation of the cartridge. 
In order for you to notice and replace the battery with a freshly charged one in time, the batteries have a three-level charge indicator. The batteries themselves are lithium ion. They do not have a memory effect and charge very quickly. It usually takes less than half an hour to charge a fully charged battery. As a rule, during this period of time, the battery installed in the tool does not have time to be discharged and you do not need to take a technical break. Batteries are equipped with Bosch Electronic Cell Protection (ECP), which protects them from overheating, overload or complete discharge.
The Bosch PSR 14.4 screwdriver has a fairly good ventilation system, so it is very difficult to overheat it during operation.
It is also worth noting that the tool has a built-in LED backlight, which is very convenient when working at dusk, dark corners, etc. The handle of the tool has soft lining, which provides additional comfort in work.
Of the minuses, it is worth noting the absence of the hammer drilling function in the Bosch PSR 14.4 screwdriver. In principle, manufacturers did this in order to reduce the cost of the tool, but for many people who want a truly versatile tool, this is a very important point. It definitely won't suit them.
On the other hand, drilling in concrete or brick must be carried out with a more powerful tool than screwdrivers or drills, it is still better to use a hammer drill.
Therefore, this minus of the tool is still not very big. Complete set of Bosch PSR 14.4 screwdriver
In stores, this model of a screwdriver is sold in a plastic case.
The kit includes a charger and two batteries. As a nice touch, the case also has a double bat. The weight of the kit is 2.8 kg and the dimensions are 390 x 100 x 290 mm.
Technical characteristics of the Bosch PSR 14.4 screwdriver
Weight: 1.14 kg;
Motor type: brush;
Chuck type: keyless;
Working voltage: 14.4V;
Battery type: Li-lon;
Charge time: 1 hour;
Battery capacity: 1.5 Ah;
Max.
drill diameter:10mm; Max.
metal drilling diameter: 10 mm; Max.
wood drilling diameter: 30 mm; Number of torque steps: 10;
Maximum torque: 40 Nm;
Max.
soft torque: 20 Nm; Number of speeds: 2;
Impact drilling: no;
Backlight: yes;
Engine brake: yes;
Spindle speed: 390, 1300 rpm;
Reverse: yes;
Number of batteries: 2;
Spindle lock: yes.
Other models of screwdrivers
|
Useful articles |