DART's Annular Cutters: Precision and Performance in Metal Drilling

Annular cutters have revolutionised metal drilling, offering superior efficiency and precision compared to traditional drill bits.

In this blog post, we will explore the world of annular cutters, discuss their primary use with mag drills, delve into their diverse applications, and shine a spotlight on the precision and performance of DART's annular cutters.


Understanding Annular Cutters:

Annular cutters are specialised drilling tools designed with a hollow center and multiple cutting edges. Unlike conventional drill bits, they remove material in a core-shaped form, resulting in cleaner and more accurate holes.

With their unique construction, annular cutters provide efficient chip removal and less drilling pressure is required, making them ideal for metal drilling tasks. It is important to note, that pilot pins should be used with annular cutters, this helps to remove the plug once the hole is cut. The plug is the circle of material cut out by the cutter.


The Role of Mag Drills:

Annular cutters are primarily used with mag drills, also known as magnetic drills, which are widely employed in metalworking. Mag drills utilise powerful magnets to secure the drill to the workpiece, ensuring stability and precision during drilling operations.

The combination of annular cutters and mag drills allows operators to achieve exceptional control and accuracy in various drilling orientations, including vertical, horizontal, and overhead surfaces.


Due to the construction of a mag drill, they provide extremely low HAV (hand arm vibration) compared to hand-held drills. For instance, while a TCT Holesaw can deliver a comparable cut and finish to an annular cutter, it tends to generate significant levels of HAV. This makes mag drills perfectly suited for professionals consistently drilling holes in thick metals.


Applications of Annular Cutters:

Annular cutters have extensive applications across various industries, thanks to their versatility and precision. In metal fabrication, construction, and manufacturing, annular cutters excel in drilling holes for pipes, tubing, and structural components. They produce clean, precise holes, reducing the need for additional machining or finishing operations.

You will often find annular cutters regularly used for ship building, bridge and rail building, steel framework construction and in other industries such as truck manufacturing, the oil and sea industry, and in the agriculture industry.


DART's Range of Annular Cutters – Manufactured in the UK:

At DART, we offer a renowned range of precision-made annular cutters, manufactured in the UK, explicitly designed for magnetic drills. These cutters are distinguished by their exceptional quality and high wear resistance. They boast a unique cutter geometry that enables rapid hole cutting, complemented by a fully ground finish for superior performance.

With a ¾’’ Weldon shank and precise tooth geometry, these annular cutters provide optimum tool life and cutting speed. They excel at cutting mild steel and other softer metals such as structural steel, construction steel, aluminium, and copper/brass. As a result, they are exceptionally well-suited for a wide range of applications, including on-site construction work, bridge building and repair, truck and vehicle fabrication, as well as general fabrication tasks.

To ensure a professional clean cut while preserving the cutter's longevity, it is imperative to use these annular cutters with coolant and an ejector spring. This combination facilitates efficient chip removal and maintains the overall performance and durability of the cutter.

With DART annular cutters, you can expect nothing short of exceptional quality and reliability for your drilling needs.


Conclusion:

Annular cutters, primarily used in conjunction with mag drills, have revolutionised metal drilling, providing unparalleled efficiency and precision. DART's annular cutters exemplify precision engineering and superior performance, offering durability and exceptional cutting capabilities.

Whether you are working on a small-scale project or tackling large industrial applications, DART's annular cutters are designed to meet your metal drilling needs with precision and reliability. Explore DART's range of annular cutters today and experience the power of precision in your metalworking operations.


We love to see our DART products in action! Be sure to tag DART Tool Group on Facebook, Instagram and LinkedIn to share your experiences of the DART Annular Cutters!

Kester Paterson | DART Tool Group