Ring bit drilling system - Mitsubishi

Mitsubishi drilling systems are easy to use high quality products. Geomek provides drilling systems for the most commonly used dimensions Ø 114.3 – 1016 mm. Naturally, we can help you with any additional special needs.

We try to keep several hundred ring bit sets and a handful pilot bits for the most common dimensions in stock. This way we can fill most emergency orders. We have many years’ experience with these products, so we’re therefore familiar with them and can help with most of the types of problems you may encounter when running DTH drilling. We always try to help with ideas and problem solving when you may need it.

In addition to our extensive warehouse in Spånga, we also keep consignment stocks at Scandia Steel in Lithuania, and SSAB in Finland, where you can have your ring bit sets welded to the casing before delivery.

Why choose Mitsubishi

Their high-quality steel offers long-wearing, long life products.
More, and larger button bits, that are soldered to the ring on site up to Ø324 mm.
The L-system has more reaming
The Heavy duty, A-system goes further.
The Eco-system goes far enough.
Our in-depth know-how and extensive stock.

The Eco system

Many of the casings that are drilled are not driven especially deep, or into very difficult ground conditions We have therefore developed the Eco system jointly with Mitsubishi. This is designed to enable our offering an economical system for simpler drilling. By keeping the casing shoe separate from the drilling ring, we save you production costs, making the product less expensive. You can tell it is the eco system by the separate casing shoe, welded inside the casing and the loose ring attached to the pilot. With the Eco system you will not be able to reach as far as when using our regular ring bit systems, but still far enough for many projects.

L/LL System

In cooperation with Mitsubishi we developed the L System to meet the demands on a RD pile. This L System does not have structural welding, as opposed to the A System since the ring bit set is threaded around the piping so it rests directly on the moving ring. Since this has a higher steel quality, and is just as thick or thicker thickness than the pile, we can guarantee that what the pile is resting one has a longer lifespan than the rest of the pile. The L System also makes room for coupling sleeves on threaded piping. This is now the clearly predominant Mitsubishi system in use.

The LL system is a further development and optimization of the L system. About 30% less material reduces the environmental impact, reduced outer diameter of the rings increases drilling speed. LL is fully compatible with L, LL can be drilled with L-pilots and vice versa. Since the summer of 2021, LL will be implemented gradually and will eventually replace the L system in anything but tougher conditions.

A System – Heavy duty

The A System was the original ring bit drilling system from Mitsubishi. You recognize this system by the rings threaded into the casing on the longer pilot bits and their double impact shoulders. The double impact shoulders – where the one strikes the casing shoe, and the other strikes the ring bit – is why the A System is often used where ground conditions are especially difficult. The A System simply runs longer than other ring bit drilling systems.

Venturi

The Venturi System was developed for sensitive ground conditions and for requirements of minimal impact on nearby areas. The difference, compared to regular pilots is in how the air is controlled in the pilot bit. The Venturi pilots are compatible with the L System ring set, and you can also use a customized ring set. The Venturi pilots are also effective when drilling through wood, and in heavy clays.