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Advantages over eccentric system |
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• Straighter Holes: Because this ring bit system doesn't use any eccentric parts, it will drill in any overburden with almost no deviation. The driver bit also has a pilot portion that drills, 3" to 5", before the crown bit, allowing it to keep the casing very straight. If you try to drill on the side of a boulder with an eccentric system, the reamer will kick you out of your trajectory. • Rate of penetration: their is two distinct advantages to drill with the Xs drill system: 1 - Concentric: On the crown bit, their is carbide buttons all around the perepherie of the hole. That means for each turn you do with a ring bit, you have in fact drilled a deeper portion of that hole. 2 - Hammer: If you have a lot of boulders or if you need to drill in fractured rock, the Xs is the only system offering the advantage of using a larger hammer to drill with the crown. The penetration rate in rocks will be almost the same as if you are drilling with a conventional oversized bit. • Smooth Drilling: Compared to an eccentric method, drilling with the full face Xs drill system will be an unbelievable experience. Working with an eccentric system is very hard on every piece of equipment due to excessive torque applied by the reamer, on the driver device, hammer, drill rods, rotation head and mast. • Wear on gage carbide button: The wear on the carbide buttons on an eccentric system (on the pilot and especially on the reamer part) will occur very fast especially in abrasive rock or harder ground. On the Xs drill system, there are double the quantity of carbides on the gage row that are actually needed to give extended life. • Components: Eccentric systems consist of a lot of different components, all necessary for its operation. Usually there is a pilot bit, a reamer bit, a driver, steel balls, set screws, pins, spring pins, etc... if you are using a wing type system a driver device, 2, 3, or 4 wings, pins, screws, spring pins, etc.. All those parts are very costly and this can cause you lot of time on a job site. With the Xs drill system, there is a driver with a crown, already assembled and ready to drill. That's it ! • Thoughness of parts: In those eccentric and/or wing bit system, every components are very fragile, and has soon has you have a little bit of wear in overall system, those parts are incline to break without notice and let you again with down time. • Energy transfer: With the Xs drill system, the energy given by the hammer is transfer directly and entirely to the drilling part of the crown bit, and not to the driving shoe. • Easier to Weld: The crown bit is composed of two (2) assembled swivel parts. The lower rotating part which has carbide buttons to drill, receives the impact and rotation from the hammer. The upper part is welded to the casing, but doesn't receive any percussion directly from the hammer but is pulled down with the casing through a swivel joint. The impact to the joint is minimized because the drilling action of the rotating crown portion has absorbed most of it, leaving however enough energy to pull down the casing. • Mainenance: In almost any other system, there is a lot of maintenance to do on the most expensive part, wich is the driver. The driving shoe is fixed and welded to the casing while the driver rotate and impact on this shoe. Rapid wear appears on the driver and it needs to be rebuild or replace. On the Xs drill system, that grinding effect is transfer to the swivel joint between the upper and lower part of the crown, wich is left in the hole 90% of the time. Experience the difference with the Xs drill system
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