Results of testing the most common twelmanized models of drills-screwdrivers.
Onal tools. They can be quickly adapted for such fine work, such as polishing various surfaces.
These autonomous nutritional devices that combine power, ease of use and fast battery charging were appreciated by both professionals and amateur masters. We tested and present you 11The most common twelmanized models of screwdriver drills
In recent years, portable power tools with built-in charging batteries have appeared on the market. They are preferred due to the convenience of use and relatively low prices. Technological advances in this area are usually associated with achievements in the production of batteries.
The power of most portable power tools depends on voltage and current strength. Ineapply on the fact that there are now tools with powerful batteries for 14.4V, the advantage remains for the twelve collens, in which the power, autonomy, weight and convenience are best combined. Reducing the battery charging time is also an important factor. All models of our review are equipped with charging devices charged for 1 hour. Annex models are completed with the second set of batteries, allowing not to be simple during operation.
Characteristic differences
The first determining factor when choosing a screwdriver drills can serve as the form and location of their handle.
Classic models have "pistol" handles from behind. They are convenient enough for them when drilling or wrapping screws. But the position of the nameless finger is not very successful and therefore, to keep the drill in the desired position, you have to make some effort.
The handles located in the center of gravity of the car is much more convenient. We almost do not get tired and the accuracy of work is significantly higher. The horizontal position for such drills is the most natural. Festo drill deserves special attention, which received a silver medal for the best design at Batimat-95 exhibition. Here the battery is located separately from the handle, which provides good equilibrium and the bulky of the battery is almost not felt.
To perform heavy work, in which the drill must be kept with two hands, models are now being developed with more precisely oriented gravity with handles. The rechargeable battery is located so that the distance remains exactly the width of the palm. The surface of the handle for greater amenities is covered with elastomer or made rough.
Other nodes
Engine block, velocity box and mechanism controlling the torque rotation or screwdriver, are usually combined into a sectional block, which avoids throwing. Some models, such as Dewalt, provide for the possibility of replacing the coal brushes of the drill electric motor. Torque controls on most drills of screwdrivers is carried out by a switch-switch. Torque and speed of drilling and wrapping of screws have two mechanical velocities calculated on different materials.
The electronic controller smoothly changes the rotational speed of the cartridge to accuracy when drilling. The inertial brake of the motor allows you to save time: about 150 shops can be screwed up for 15 minutes.
The maximum torque of the tool both when the screws are wrapped up and when drilling holes is ensured when the adjustment ring is set to the most extreme position.
Nickel-cadmium batteries are designed for different current strength, depending on the power of the machine. Cartridges with automatic locking axis drills are very effective and easy to use: For example, in Bosch models you can do one hand.
Test results
This test was carried out without prior drilling with a rather large screw (680mm) and a very old and solid oak beam. Each model was wrapped in five screws in different places. This made it possible to establish the average power of each machine (at the depth of the screwed screw). Results:- Makita- 71mm,
- ELU- 55mm,
- Festo- 53mm,
- Ryobi- 47mm,
- Dewalt and Metabo- 44mm,
- Black Decker- 42mm,
- AEG- 39mm,
- Bosch- 38mm,
- Peugeot- 26mm,
- Skil- 13mm.
| AEG BDSE12 | Blackdecker KC1282C. | Boschpsr 12 VES-2 | Dewalt DW912. | ELU BSA52K. | Festo CDD12ES. | Makita 6311dwh. | Metabo BE AT 12/2 R + L | Peugeot 12pc2e. | Ryobi TFD-220 VRK | Skil 2738u | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Voltage/ Tok Power | 12 V / 1.4 A | 12 V / 1.2 A | 12 V / 1.4 A | 12 V / 1.7 a | 12 V / 1.7 a | 12 V / 1.7 A | 12 V / 1.7 A | 12 V / 1.4 A | 12 V / 1.2 A | 12 V / 1.2 A | 12 V / 1.2 A |
| Battery charging time | 1 hour | 1 hour | 1 hour | 1 hour | 1 hour | 1 hour | 1 hour | 1 hour | 1 hour | 1 hour | 1 hour |
| Speed | 1st: 0-360 rpm; 2nd: 0-1000 rpm | 1st: 0-400 rpm; 2nd: 0-1200 rpm | 1st: 0-400 rpm; 2nd: 0-1150 rpm | 1st: 0-460 rpm; 2nd: 0-1400 rpm | 1st: 0-400 rpm; 2nd: 0-1400 rpm | 1st: 0-380 rpm; 2nd: 0-1100 rpm | 1st: 0-370 rpm; 2nd: 0-1150 rpm | 1st: 0-300 rpm; 2nd: 0-900 rpm | 1st: 0-350 rpm; 2nd: 0-1100 rpm | 1st: 0-400 rpm; 2nd: 0-1300 rpm | 1st: 0-500 rpm; 2nd: 0-1650 rpm |
| Installing torque | 7 positions | 14Positions | 8 positions | 14 positions | 14 positions | 9 positions | 5 positions | 5 positions | 6 positions | 6 positions | 5 positions (bud) |
| Maximum torque | 22 N / m | 22 N / m | 15 N / m | 23 N / m | 22 N / m | 22 N / m | 21 N / m | 16 N / m | 10 N / m | 25 N / m | 12.5 N / m |
| Patron diameter | 1-10mm. | 1-10mm. | 2-10mm | 2-13mm | 0.8-10mm | 1-10mm. | 1.5-13mm | 0.5-10 mm | 0-10mm | 0.8-10mm | 1-10mm. |
| Reverse | Above Golzheka | Through on the handle | Through on the handle | Through on the handle | Through on the handle | Through on the handle | on one side of the handle | Above Golzheka | Above Golzheka | Above Golzheka | Above Golzheka |
| Perforator function | not | there is | not | there is | not | not | not | not | not | not | not |
| Maximum drilling diameter | steel - 10mm, Wood- 25mm | steel - 10mm, wood - 25mm, Concrete - 12mm. | steel - 10mm, Wood - 15mm. | steel-13mm, wood - 25mm, Brick - 10mm | steel-13mm, Wood- 30mm | steel - 14mm, Wood- 25mm | steel-13mm, Wood- 24mm | steel - 10mm, Wood- 16mm | steel - 10mm, Wood- 25mm | steel - 10mm, Wood- 22mm. | steel - 10mm, Wood-25mm |
| Maximum drill diameter | 8mm. | 8mm. | 8mm. | 8mm. | 8mm. | 8mm. | 6.4mm | 8mm. | 6mm. | 8mm. | 8mm. |
| Lever | "Pistol" | CENTER | CENTER | CENTER | CENTER | "Pistol" + rechargeable battery in the center | CENTER | "Pistol" | "Pistol" | "Pistol | "Pistol |
| Convenience of the handle | very comfortable | very comfortable | Comfortable | very comfortable | very comfortable | Excellent | very comfortable | Comfortable | average | average | Comfortable |
| Equilibrium | Good | Excellent | Excellent | average | Excellent | Excellent | Good | Good | average | Good | Good |
| Length | 270mm | 268mm. | 215mm. | 260mm | 245mm. | 210mm. | 260mm. | 250mm. | 300mm. | 290mm | 270mm |
| Weight | 1.6 kg | 1.5 kg | 1.6 kg | 1.9 kg | 1.9 kg | 1.85 kg | 1.9 kg | 1.5 kg | 1.76 kg | 1.8 kg | 1.9 kg |
| Pros and cons | PROS: A narrow rubber coating handle is very comfortable in hand; The battery rendered forward serves as a counterweight; The kit includes a small powerful built-in lamp, eating directly from the generator; Drill is packed in PVC suitcase. MINUSES: Bulkiness. | PROS: The central handle with a rough surface is reliably and confidently keeps his hand; Finger support at equilibrium point; elastomer coated cape; torque adjustment accuracy; Perforator; low weight; packed in PVC suitcase together with Bullet drill; Low price. MINUSES: The instructions are not specified specifications. | PROS: Fixing the drill or screwdriver in the cartridge with one hand; Automatic locking axis drill, allowing to use a drill as a conventional screwdriver to "push" screw; low weight and size; Low price. MINUSES: Fastening the battery seems not too reliable. | PROS: The central handle and the booster are covered with elastomer; steel cartridge with a switch well and accurately clamp a drill (screwdriver); The tool is packed in a metal suitcase with a spare battery. MINUSES: Steel cartridge because of its weight slightly shifts the center of gravity drills forward. | PROS: Machine with powerful torque; It is very convenient to hold; The handle and the gasheet are covered with elastomer; Packed into a PVC suitcase with two nozzles and an additional kit of batteries. MINUSES: The weight is slightly above average. | PROS: Not cumbersome and ergonomic; high power; Easy installation of the battery; Comes in a suitcase in which you can change placement, with a spare battery. MINUSES: There are no shortcomings. | PROS: Unsurpassed power; 13 mm Self-testing cartridge with a fuse of a drill axis; It is very convenient to keep in hand; Carabiner for mounting to the belt and cord; Packed into a suitcase from PVC. MINUSES: The reverse button on the handle is uncomfortable for pressing; high price. | PROS: Very small weight; necromozda; rather high torque (despite the instructions of the manufacturer); The cartridge is calculated on the drill of a small diameter; a wide range of accessories (for example, angular transmission); Packed in a metal suitcase. MINUSES: Not too good equilibrium due to the "pistol" handle. | PROS: Torque adjustment ring is also used to adjust the speed of rotation; Packed into a suitcase from PVC. MINUSES: Thick handle-under a large arm; Reverse from above the gay is difficult to access; a little lack of torque; bulkiness. | PROS: It can be equipped with the fastest of batteries chargers (charging time - 8min); best torque among amateur cars; Sale in a suitcase from PVC. MINUSES: Very bulky car. | PROS: Sale in a suitcase from PVC; affordable price. MINUSES: The lowest torque of rotation from all models presented here; torque adjustment button, albeit convenient, but is in a hard-to-reach place; Insufficient number of positions when adjusting the torque. |
Conclusion
Existing on the market drill-screwdrivers are divided into two categories: some belong to professional and you can buy them in specialized stores, while others are considered amateur and sold in business stores.
Professional. Makita model, the most powerful of those presented in our review, but too expensive. Ergonomic Festo with a rapidly charged battery, most of all meets the quality-price ratio. ELU- complex and very powerful machine. Amodel Dewalt has a superprofessional cartridge, which allows even the most difficult work.
Amateur. The quality of a powerful BlackDecker and a little cumbersome Bosch quite corresponds to their price. High-performance Ryobi, multipurpose Metabo, as well as AEG attract assembly quality. Peugeot distinguishes some bulky and lack of power. Also very low is the Skil model.
