Best Percussive Hammer Drills: An All-Time Handy Tool

Starting from mere & bare carpenters to the qualified engineers, drills are the most common element in their kits. Hammer Drills manage to find their location in the all kinds of toolbox ranging from household purpose toolbox to the highly specialized toolkit used for some heavy industry machinery.

There are different types of hammer drills available & used for several purposes. But as the workman say everybody has a different role to fit in. So of the most, three relevant best hammer drills with percussive hammer drill are the most common and notable.

 

Supported Activities

Since being the most common hammer drill they find their usage most of the most times and among the most common tasks. The mention of worthy activities that suits percussive hammer drill are as follows:

Ø  Any kind of mediocre drilling

Ø  Drilling associated with the purpose of heavy ore mining

Ø  Drilling in rocks & bricks in the construction field.

Ø  Heavily used nowadays in the oil machinery and oil tanks Construction.

Ø  Used for removing concrete during excavation.

 

Working Mechanism

The drills mainly work on the principle of the rotation of a shaft by a motor behind it. The front end of the shaft rotates at very high rpm whereas the lower end remains fixed to 2 plates that go on jazzing with time.

The percussive hammer drills come with a couple of toothed gear are attached and their rotation gives the chuck and the iron bit a rotation as well as a percussive action at the same time. This gear based feature enables it to produce the hammering effect i.e. vibration along with the rotation drilling impact on the surface. This combination of the hammering and the rotation enables the user to produce perfect drills with a definite aperture on the surface.

This hammer drills run on low power and nowadays have been updated with wireless & rechargeable battery facilities to enhance the working facilities.

 

Best Percussive Hammer drill

The percussive hammer drills are mainly used for rotatory along with the percussive function. Of the category, there are two notable best percussive hammer drills.

      Down The Hole Hammer Drill aka DTH

      Blast Hole Drills

Down The Hole Hammer Drill aka DTH: The down the Hole Hammer drills are the ones which exert the force along with hydraulics down the line to the front end of the bit rod of the drill. This bit rod is composed of an empty & hollow stainless steel. Liquid coolants are used to reduce the friction force generated for the purpose. They have mostly used in hard rock solid and brick structures.

Blast Hole Drills: Commonly known as underground drills. This drill features a similar kind of activity like the DTH drills but they come with an added advantage of compressed air.

Benefits & troubles

There is no such apparatus in the world that gives perfect activity with no tolerance. Similarly, these hammer drills also come with some advantages and disadvantages.

Pros:

v  Comes handy in producing accurate precession based drill holes.

v  Can be used on rough & dry surface including some rough granites.

v  Nowadays comes with wireless and rechargeable battery feature, can be used anywhere without a nearby electric source.

v  Since these drills are low power and low torque drill, they are given the benefits of slight to the slightest rotation which in turn gives an easy man-machine handling benefit.

Cons:

v  This type of hammer drills comes with a restriction of working environment i.e they cannot be used through materials enforced by steel.

v  High wear & tear on the rod bit damaging the shaft.

v  Comes with a need for maintenance.