How to choose a puncher

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Puncher – This is a specialized hammer drill. Unlike a conventional hammer drill, the hammer drill is designed for long-term and trouble-free operation when drilling hard materials.


From a mechanical point of view, the hammer drill is significantly superior to the hammer drill. In the drill, the impact function is implemented as an additional one, and reduces the reliability of the entire structure. In the hammer drill, the impact function is the main one and is implemented very efficiently and reliably. In addition, the rotary hammer drill has a significantly higher drilling speed in hard materials, which increases productivity..

In a conventional drill, the impact function is implemented approximately mechanically. The two toothed ratchets touch and when pressed during hammer drilling, the ratchets jump over the teeth, which is where the hammer effect occurs. Naturally, this leads to increased mechanical wear of the ratchets. The amplitude of the impact is also low, the impacts are weak, and drilling is slower.

In a hammer drill, the impact function is carried out pneumatically, and the mechanism resembles the bolt of an automatic weapon. The drill is not fixed in a cam like a drill, but in a special chuck. The hammer drill chuck not only allows you to quickly change the drill, the fact is that the drill is not rigidly fixed. The blow to the drill is strong and slippage is excluded. Thanks to this, the rock drill has a high penetration speed and reliability..

Rotary hammers are classified as professional power tools and are more expensive than conventional drills. Drills and spare parts for a hammer drill are also more expensive, but they have increased strength and durability.

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It is impossible to install conventional drills into the hammer drill chuck due to the special design of the chuck. To install drills from a conventional drill, use a special adapter, which usually comes with a hammer drill.

The chuck for rock drills is usually quick-release, and allows you to change the attachments with a slight movement of the hand. At the same time, the fastening of the drills is very reliable, and does not allow the drill to slip in the chuck, as is often the case in a drill with a conventional toothed chuck..

Rotary hammer specifications

Power. The more powerful the rock drill, the higher the drilling speed. Also, the thickness of the drill with which your hammer drill can work depends on the power. Remember that more powerful rock drills are heavier and will consume more power when working..

Rotation speed control. Almost all rotary hammers have. It is good if there is an adjustment of the maximum speed limit. It is said confusingly, but in fact it is like this: set the maximum speed, press the trigger all the way and work.

Switch stopper. Usually this is a button that allows you to lock the switch so that you do not press it with your finger. This function is useful when you need to drill hard material for a long time and allows your fingers to rest..

Disabling the shock function. If it is not possible to turn off the percussion function, then it is impossible to use the hammer drill as a drill. The function of the drill in the hammer drill is, as it were, secondary, but sometimes the drill may not be at hand.

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Rotary hammer or drill

A drill can function as a hammer drill, and a rock drill can function as a drill. What to choose?

The question arose because the drill, when performing the functions of a punch, quickly wears out and fails. In order for the perforator to perform the functions of a drill, you need to install a special nozzle that lengthens the structure, and it is more difficult to work with such a tool. In addition, the powerful hammer drill has large dimensions and considerable weight, so it is easier and more convenient to work with a small drill..

It all depends on the type of work that you do most of the time. If you regularly need to drill holes in hard materials (concrete, cement plaster, etc.) then a rotary hammer is more suitable for these tasks. If you often need to drill holes in soft materials (metal, wood, etc.) and only occasionally it becomes necessary to drill several holes with an impact function, then a drill can be quite enough. If during professional work you need to use both a drill and a perforator, then it may be worth purchasing both tools, in which case they will last longer and save you time during work..

Perforator complete set

The basic equipment of different models can vary greatly. It is often more profitable to pay $ 10-30 more expensive, and then save on the purchase of accessories and spare parts.

What will be very useful in a set with a puncher:

  • Spare brushes for the electric motor. Separately, the cost of the brushes is more expensive, and in the kit they get almost for nothing. For a home puncher on duty, the replacement of brushes will not be required soon, but for a professional puncher that works a whole shift, it will be needed very soon. If the kit includes spare brushes, consider that you saved $ 8-10.
  • Adapter cartridge for installing drills from a conventional drill. If it is not there, then immediately you need to ask whether it is possible to install an adapter (whether the shock function is turned off). It is better if an adapter is included in the kit, this is also a significant saving.
  • Drill kit. Many manufacturers complete the rock drill with a basic set of drills. Drills for a hammer drill are much more expensive than conventional drills for impact drills, because the drills for the hammer drill are subject to increased requirements for strength and reliability. For a home, a set of drills is usually enough, a set of drills that come with the kit.
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    The rock drill is simply indispensable for professional work when drilling hard materials. It is significantly more durable than a hammer drill and allows you to work faster.

    If you have started repairs in the house and you have to drill a lot of holes in the concrete walls, then it may be worth purchasing a hammer drill. You will pay more for a hammer drill than a hammer drill, but the hammer drill will last longer and make repairs a lot easier. The presence of an adapter for drills from a conventional drill in the kit with a perforator will allow you to use it as a regular drill.

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