Description, types and selection criteria for concrete drills for a rotary hammer

For those who work with stone, concrete, or masonry, concrete drills are a need. These drills make it simpler to drill holes for a variety of uses, such as anchor installation, fixture installation, and general construction tasks, when combined with a rotary hammer. Knowing the various kinds of concrete drills and how to select the best one will help you work more productively and with higher quality results.

A concrete drill comes in a variety of varieties.

Description Types and Selection Criteria
Concrete drills for rotary hammers are essential tools for drilling into concrete, masonry, and other hard materials. They are designed to withstand the high impact and torque of rotary hammers, ensuring efficient and precise drilling. Types of concrete drills include SDS-Plus and SDS-Max, which differ in shank size and compatibility with rotary hammers. When selecting a drill, consider the diameter and length for the specific application, the material of the drill bit (carbide-tipped for durability), and the

What is a concrete drill for a hammer drill?

A hammer drill is a specialized tool used to drill holes in materials with high strength. Drills vary widely in terms of design, tail type, and geometric parameters. They are chosen separately for every assignment.

Drill and drill: what is the difference

A drill is not like other drills because it uses shock-rotational movements to drill holes. This allows deep holes (up to 1000 mm) to be drilled in high-strength structures, which are very difficult and frequently impossible to drill with traditional drills.

It is true that in order to clear the hole being drilled of dust, reciprocating motions are frequently required during this type of drilling. The primary feature of the hole tip is a crown, which usually consists of multiple cutting segments and greatly extends its service life.

Crucial! When drilling concrete, it is crucial that the drill not bite the concrete as this could cause it to break or jam. Certain hammer drill types offer reverse for the purpose of extracting a hole. To prevent the shank from wearing down, it must also be lubricated on a regular basis.

A drill is not the same as a drill; it has a shank, which is a fixed part in the chuck. The moveable cams on the drill are primarily fixed. For drill holes, a unique chuck with locking balls is included. Although there are drills on the market today that have a chiselling function, they are useless when working with hard materials.

For effective and secure drilling, it is essential to comprehend the various types and selection criteria when selecting a concrete drill for a rotary hammer. The design, composition, and coating of concrete drills vary, which has an impact on their longevity and performance. The size of the drill, its compatibility with your rotary hammer, and the particular material you will be working with are important things to take into account. You can guarantee accurate, spotless holes and increase the life of your rotary hammer and drill bit by choosing the appropriate drill.

Types of concrete drills for rotary hammers

They vary in a few key areas, which are covered in more detail below.

Shank size

Five categories exist:

  • SDS – shank with a diameter of up to 10 mm with two grooves.
  • SDS plus is the most common size used in household rotary hammers. It is characterized by a diameter of no more than 25 mm. There are four grooves for fixing.
  • SDS-max – shank with a diameter of up to 80 mm, used in industrial units. For fixation, it uses three open and two closed grooves.
  • SDS-top – intermediate shank size with a diameter of 16−25 mm, used in some BOSCH power tools. It has 4 grooves for good fixation.
  • SDS-quick – hex shank with a diameter of 4-10 mm, designed for Bosch Uneo/Uneo Maxx rotary hammers. It uses dowels for fixation.

Diameter and length

When making your selection and making your purchase, you should definitely take these drill dimensions into consideration as they are the most crucial.

  • Diameter. Depends on the length and type of shank – for example, the maximum permissible hole Ø SDS max is no more than 50 mm. It is expressed as an even number.
  • Length. The maximum drill length for a rotary hammer is 1000 mm, and the minimum is 100 mm. In production, the most popular drills are Ø 18, 20, 22, 24, 28 and 32. The drilling procedure does not allow the use of longer holes – it is impossible to drill holes with them.

The drill’s diameter determines its length. Deep holes can only be drilled effectively and safely if these qualities are in balance.

Tables displaying the diameter and length of drills manufactured today are included in the article.

Note that the latest table indicates that the longest drill bit for rotary hammers is 1320 mm.

Resource (durability)

Every day, skilled installers drill a lot of holes in different kinds of structures, which causes the hole’s working surface to quickly deteriorate and lose productivity. The metal used in the construction of a concrete drill for a rotary hammer primarily determines how long-lasting it is.

The soldered crown, which is primarily responsible for the drill’s primary function of destroying solid material, is particularly important. If required, wood products can have holes drilled in them using a drill.

Take note! In order to avoid having to buy a new drill hole and incurring additional costs, you should consider its primary performance features when selecting one.

For accurate and productive work, matching your rotary hammer with the appropriate concrete drill is crucial. You can make an informed choice if you are aware of the various kinds of drills that are available and their intended applications. Each variety of drill has specific advantages and uses, ranging from SDS-plus and SDS-max to options with carbide tips and diamond coating.

The material you’re working with, the size of the holes you need to drill, and the power of your rotary hammer should all be taken into account when choosing a concrete drill. Additionally, it’s critical to consider the caliber of

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Timur Kiselev

Professional builder with 15 years of experience. I know everything about the construction of houses, cottages, bathhouses and other buildings. I will be happy to share my knowledge and experience with you.

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