Types and features of DeWalt rotary hammers

DeWalt is a very popular manufacturer of drills, hammer drills, screwdrivers. The country of origin is America. DeWalt offers state-of-the-art solutions for construction or plumbing work. The brand can be easily recognized by its characteristic yellow and black color scheme.

DeWalt drills and hammer drills do an excellent job of drilling absolutely any surface, from wood to concrete. With this device, you can easily make holes of different depths and radii. In this article, we will consider several devices, having studied which you can easily choose the right option based on your needs.

Very often, many craftsmen simply do not have the ability to connect their equipment to the power line. In this case, the cordless versions of DeWalt rotary hammers come to the rescue. They are distinguished by sufficient drilling power and long-term operation without electricity. Consider the highest quality tools in this category of rotary hammers.

The device is deservedly recognized as the lightest and most durable in its class.

It is perfect for use in places far from electricity. The manufacturer did a good job on performance. As a result, the heating of the punch will be minimal.

Thanks to the arched holder, the device fits perfectly in the hand. The additional handle is removable and facilitates the work process. The hammer drill weighs about 2700 grams. Therefore, with simple drilling, you can safely work with it even with one hand.

Let's consider the positive aspects of the model.

• The device is equipped with a depth gauge, thanks to which you will always control the set drilling depth.
• The additional holder has a rubberized insert that allows the device to lie securely in the hand.
• If desired, the rotary hammer can be adjusted so that the minimum amount of dust is emitted during operation. This can be very important when working in residential areas.
• With a 6mm drill, you can drill about 90 holes. And this is with one full recharge of the battery.
• The battery capacity is 5 A * h. It will take no more than an hour to fully recharge.

• Due to its low weight and small dimensions, the device will be especially useful if you need to work at height.
• Comfortable grip. It is manufactured specifically for this line of rock drills by Stanley.
• The device operates in three modes.
• Each blow is made with a force of 2.6 J. The device can make up to 91 blows per second.
• Reverse function. The switch is not too low.
• The device allows you to drill holes up to 5 cm even in brick.
• The axle spins at 1500 rpm.
• The hammer drill can handle even the toughest metal surfaces. For example, you can drill a 15mm hole in an iron sheet.
• Installed cartridge type SDS-Plus. It allows the drill to be replaced effortlessly.

But there are also downsides.

• High price: about $ 160.
• The puncher vibrates strongly, which is a disadvantage if you plan to work with the device for a very long time.
• There is no special case for transportation included with the device. This is a very strange decision, as cordless drills are designed to be carried around all the time.
• The device is quite light, and the battery is quite heavy. Therefore, there is a preponderance towards the holder.This is especially noticeable when drilling horizontally.

In this device, a lot of power is concentrated in a small package.

This solution is perfect for work where a conventional rotary hammer simply cannot fit. The manufacturer installed a vertical slider, due to which the device was greatly reduced in length.

The rotary hammer is convenient to use even with one hand. There is a clip on the edge with which you can fasten the device to the belt. Unlike the model described above, this device is capable of absorbing vibration.

The positives include several characteristics.

• Almost the entire body is rubberized. Consequently, the device is quite robust and shockproof.
• The device operates in three modes.
• The cartridge has a special ring, thanks to which it has become much easier to change the equipment.
• Ergonomic handle.
• One of the most powerful batteries is installed at 54 V. The impact force is 3.4 J, and the speed is 74 impacts per second.

• The device is capable of drilling a hole with a diameter of 2.8 cm in concrete.
• The device is equipped with a depth gauge.
• The device makes 16 rotations per second.
• LED lights.
• Impact resistant material.

Negative sides:

• price $ 450;
• at this price, there is no battery or charger included;
• you will not be able to adjust the RPM;
• very expensive batteries;
• the punch is fully charged in 3 hours;
• under heavy load, the appliance starts to creak.

We reviewed the best options for cordless rock drills. Now let's talk about network views. They are much more powerful, and do not turn off due to the discharge of the battery.

The most popular in this segment. It is not very expensive, but it is capable of delivering good performance. In the professional field, it is unlikely to fit, but in a home repair environment, this is the best unit.

The device weighs about 2600 g, fits comfortably in one hand. There is a possibility of attaching an additional holder, which rotates around the barrel of the hammer drill.

Positive traits:

• price $ 120;
• reverse - a convenient switch, protected from unintentional pressing;
• rubberized handle;
• installed cartridge type SDS-Plus;
• the device operates in two modes;
• case for carrying the device;
• vibration absorption;
• power 500 watts, impact force - 2.9 J, impact speed - 91 per second;
• there is a possibility of adjusting the speed of revolutions.

Negative sides:

• there are no drills in the basic configuration;
• in order for the blow to work, you will have to put more pressure on the device in comparison with other options;
• periodically comes across a bent cartridge (carefully check all the periphery).

The model is great for long-term use all day long. A distinctive feature is the holder, which is attached separately from the barrel.

There are many positive aspects.

• Second holder, adjustable with one touch.
• Drilling depth control.
• Easy to replace drill. You just need to push the chuck.
• Average weight. The appliance is not too heavy: 3000 g.

• The blow is made with a force of 3 J. The drill rotates at a speed of 24 revolutions per second, makes 89 blows in 1 second.
• The hammer drill allows you to drill concrete. The drilling radius is 3.25 cm.
• It is very convenient when working with ceilings due to its oblong shape.

Negative sides:

• costs about $ 200;
• inconvenient location of the reverse button - to get it, you will have to use your second hand;
• the device emits a very loud sound during operation;
• the cord is 250 cm long, so you have to carry an extension cord everywhere.

The best solution for professionals. The device is designed for drills up to 1 meter long and is able to cope with any task. Perforator power 1250 W.

Positive sides:

• convenient additional handle with a changeable position;
• torque limiter;
• the instrument is capable of making from 28 to 47 strokes per second with a force of 8 J each;
• vibration absorption;
• the basic configuration includes a case for transportation;

• speed control;
• the device operates in two modes;
• the drill can reach up to six revolutions per second at the highest loads;
• shockproof plastic.

Negative sides:

• the price is $ 650;
• it will not be possible to change the mode directly while working with one hand;
• there is no reverse button;
• high heating for difficult tasks;
• not long enough power cable - 2.5 meters.

People for whom the construction profession is their main occupation are often faced with tool breakages. Most often, the mechanical part fails: buttons, rockers, switches.

With active use of many devices, they begin to break down even before the expiration of the warranty period. And the weakest point of the drill and hammer drill is the power button.

Breakdowns are of different types.

• Closure. This is one of the most common types of breakage. The problem is solved by cleaning the contacts.
• Damaged button wires. If the contacts are burnt out, then cleaning will not work. Only the replacement of wires or cables will help, depending on the situation.
• Mechanical breakdown. Many people face this problem after unsuccessfully dropping the tool. We will talk about this situation below.

To replace the button (plastic cannot be glued), you need a screwdriver and a boot awl (you can use knitting needles).

• First, disassemble the device by unscrewing all the screws on the back of the holder. Remove the plastic.
• The next step is to carefully disconnect the switch. After you open the lid, you will see two wires in blue and cinnamon. Using a screwdriver, loosen the screws and fold the wires.

The rest of the wiring is detached with an awl. Insert the pointed end into the wire connector until the clip is loose. Remove each of the wires in the same way.

Installing the button - all wires return to their places, the back cover is closed. The device is connected to power supply. If the new button works, you can tighten the screws and continue using the hammer drill.

For information on how to choose a DeWalt rotary hammer, see the next video.