Core drills for Diamond drill with micro impact 150

Making a hole for a socket, installing a cooker hood or a heat recovery unit, routing an air conditioning or ventilation system – all these tasks can be done with a diamond core bit, which can drill a hole in any building material. While smaller-diameter bits can be used with an ordinary rotary hammer or drill, working with a 150mm core bit already requires specialized equipment and skill.

Key Features of a 150mm Diamond Core Bit

A 150mm core bit lets you make holes for ventilation systems, heat recovery systems, industrial extraction, and other solutions. To work with such a diamond tool, you need the right equipment and an understanding of how it operates.

Technical Specifications of a 150mm Core Bit

A 150mm core bit consists of three main elements – the barrel, the shank (connection), and the diamond segments.

• The barrel is made of steel and can be 300 to 1000 mm long. The barrel length determines the maximum drilling depth. If the standard length is not enough, special extensions can be used.
• The shank (connection) is used to mount the bit in the machine. The most common connection type for a 150mm core bit is 1 1/4" UNC. If your equipment has a different thread type, suitable adapters can be used.
• The diamond segments act as the cutting elements. Thanks to the high hardness of diamond, they easily penetrate concrete and other building materials, grinding them down and forming the hole. There are segments for both dry drilling and drilling with water cooling.

Equipment

Core bits of such a large diameter are designed for diamond drilling machines (for dry and wet drilling) equipped with a special stand (rig). Handheld drilling with a 150mm core bit is only possible in highly abrasive materials (brick, aerated concrete, hollow blocks, etc.). Diamond drilling machines vary in power and offer speed adjustment, since different diameters require different recommended spindle speeds. Depending on the type of equipment (wet or dry drilling), choose a 150mm core bit suited to that type of cooling.

Materials Processed

With a diamond drilling machine and a 150mm core bit, you can make holes in any building material: brick, cinder block, aerated concrete, cellular concrete blocks, lightweight concrete, hard reinforced concrete, hydraulic engineering concrete, etc. The key is choosing the right segment type for the material. The harder the material, the softer the segment should be. Conversely, for abrasive materials the segments should be as hard as possible.

Advantages of Diamond Core Bits for Concrete

150mm diamond core bits have a number of significant advantages that justify their higher price.

1. Accuracy and precision of holes
   If you have ever made holes with carbide-tipped bits or even chiselled them out with a rotary hammer, you know that such holes are usually uneven and unsightly. Diamond drilling leaves a precise, even hole that requires no additional finishing.
2. High drilling speed
   Diamond core bits not only cope with the hardest reinforced concrete, they do it quickly. The drilling rate also depends on the power of the machine. For a 150mm core bit, drilling machines with a power of at least 3 kW are recommended.
3. Long service life
   A 150mm diamond core bit can drill up to 5 linear metres of holes. Durability depends on the abrasiveness of the material and the correct choice of segments. Some core bits can reach a service life of more than 10 linear metres.
4. Retipping option
   When the diamond segments are completely worn out, there's no need to throw away the barrel and buy a new core bit. You can purchase new segments and weld them onto the existing barrel. Such retipping saves at least 30% of the cost of a new 150mm core bit.

How to Choose a 150mm Core Bit?

When buying a diamond core bit, pay attention to several important parameters.

• Connection type. Most 150mm core bits have a 1 1/4" UNC connection. However, some diamond drilling machines have other thread types, such as M16, M18, 1/2" GAS, or special connections (e.g., on Hilti equipment). If the machine's connection doesn't match the core bit, be sure to use a suitable adapter.
• Core bit length. The most popular working length for a 150mm core bit is 400 mm. Sometimes, however, you need to drill a hole 1000 mm deep or more. In this case, it's worth having a special extension (or even several) in your toolkit.
• Segment type. Distar offers several segment types designed for different materials and cooling methods:
• RS-TX – dry drilling in ordinary and medium-reinforced concrete
• RM-TX – dry drilling in hard and heavily reinforced concrete
• RS – wet drilling in hard and highly reinforced concrete
• RM – universal segment for wet drilling in various materials
• RH – wet drilling in abrasive and non-reinforced materials
• Recommended speed. The operating instructions for a 150mm core bit specify the maximum speed at which the tool performs optimally. Ignoring these recommendations can lead to reduced performance and a shorter service life of the core bit.

Benefits of Buying a Distar 150mm Core Bit

Distar has been developing various core bits for concrete for several decades. More than a thousand tests of diamond segments on different materials have made it possible to develop optimal compositions that ensure fast drilling of even the hardest concrete. Most importantly, the process of testing and improvement never stops, and Distar is constantly improving the performance of its 150mm core bits.

Distar tools can be purchased not only in building supply stores but also on the company's website. The site offers many conveniences: filters, tips, useful information, and instructional videos on working with diamond tools.