Xs Overburden Drilling Systems

Advantages over Eccentric System

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.
Better Rate of Penetration: There are two (2) distinct advantages when drilling with the Xs drill system:

Concentric: On the crown bit there are carbide buttons all around the periphery of the hole, as opposed to approximately one third (1/3) on an eccentric system. That means for each turn you do with a ring bit you have in fact drilled a deeper portion of that hole.

Hammer: If you have a lot of bounders 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, two, three, or four wings, pins, screws, spring pins, etc., all of those parts are very costly, and this can cause you a lot of time on the job site. With the Xs drill system there is a driver with a crown already assembled and ready to drill. That's it!
Toughness of Parts: In those eccentric and/or wing bit systems every component is very fragile, and as soon as you have a little bit of wear in the overall system those parts are inclined to break without notice and leave you again with down time.
Direct Energy Transfer: With the Xs drill system, the energy given by the hammer is transferred 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, doesn't receive any percussion directly from the hammer, and is pulled down with the casing through a swivel joint. The impact of 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.
Less Maintenance: In almost any other system there is a lot of maintenance to do on the most expensive part, which is the driver device. The driving shoe is fixed to the casing and the driver rotates and impacts on the upper shoe, causing rapid wear to appear on the driver, which needs to be repaired or replaced. On the Xs drill system that grinding effect is transferred to the swivel joint between the upper and lower part of the crown, which is left in the hole 90% of the time.

Advantages Over Other Ring Bit Systems

Straighter Holes: The Xs drill system will drill in most overburden with almost no deviation. The driver bit has a pilot portion that drills 3" to 5" before the crown bit, allowing it to keep the pipe very straight.
Better Rate of Penetration: One advantage of drilling with the Xs drill system is the size of the DTH hammer used. If you have a lot of boulders or if you need to drill in fractured rock, the Xs is the only system offering the possibility to use 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.
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, doesn't receive any percussion directly from the hammer, and is pulled down with the casing through a swivel joint. The impact of 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.
Less Maintenance: In almost any other system there is a lot of maintenance to do on the most expensive part, which is the driver device. The driving shoe is fixed to the casing and the driver rotates and impacts on the upper shoe, causing rapid wear to appear on the driver, which needs to be repaired or replaced. On the Xs drill system that grinding effect is transferred to the swivel joint between the upper and lower part of the crown, which is left in the hole 90% of the time.

Advantages Over Wing Bit System

Straighter Holes: Because this ring bit system has a contiguous surface (full face) compared to the large empty portion between wings, 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 the boulder with an eccentric system, the reamer will kick you out of your trajectory.
Better Rate of Penetration: There are two (2) distinct advantages when drilling with the Xs drill system:

Concentric: On the crown bit there are carbide buttons all around the periphery of the hole, as opposed to approximately one third (1/3) on an eccentric system. That means for each turn you do with a ring bit you have in fact drilled a deeper portion of that hole.

Hammer: If you have a lot of bounders 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 the wing bit method, drilling with the full face Xs drill system will be an unbelievable experience. Working with a wing bit system is very hard on every piece of equipment due to excessive torque applied by the wings, on the driver device, hammer, drill rods, rotation head, and mast.
Wear on Gage Carbide Buttons: The wear on the carbide buttons on a wing bit system (on the pilot and especially on the wing 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 an extended life.
Components: Wing bit systems consist of a lot of different components, all necessary for its operation. Usually there is a driver device, two, three, or four wings, pins, screws, spring pins, etc. All of those parts are very costly, and this can cause you a lot of time on the job site. With the Xs drill system there is a driver with a crown, already assembled and ready to drill. That's it!
Toughness of Parts: In those wing bit systems every component is very fragile, and as soon as you have a little bit of wear in the overall system those parts are inclined to break without notice and leave you again with down time.
Direct Energy Transfer: With the Xs drill system, the energy given by the hammer is transferred 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, doesn't receive any percussion directly from the hammer, and is pulled down with the casing through a swivel joint. The impact of 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.
Less Maintenance: In almost any other system there is a lot of maintenance to do on the most expensive part, which is the driver device. The driving shoe is fixed to the casing and the driver rotates and impacts on the upper shoe, causing rapid wear to appear on the driver, which needs to be repaired or replaced. On the Xs drill system that grinding effect is transferred to the swivel joint between the upper and lower part of the crown, which is left in the hole 90% of the time.

Components:

Driver Bit: The driver bit is the device that transfers impact and rotation to the crown bit for drilling. The driver bit locks into two flats on the casing crown, and they act together as a standard drill bit; both the driver bit and the crown have tungsten carbide buttons. The Driver bit drills a pilot hole of 3" below the crown to guide the direction of the casing in rough drilling. Afterwards this pilot space below the crown allows the square bit to turn without touching the crown.

Crown Bit: The crown bit is a two-piece unit permanently connected together. The upper part is welded to the casing and the lower part, which has Tungsten Carbide, is free to rotate with the driver bit.

Square Bit: The drill-through bit is specially shaped to pass through the crown's flats and to drill the sub-casing hole to a maximum hole diameter, enabling in most cases the use of a larger diameter hammer than the competition.

Impact Zone: Direct energy from the hammer is transferred to the crown bit through two (2) recesses formed by the locking surface plus a projection all around the periphery of the driver (donut).

Evacuation: Two (2) big air holes are drilled in the face of the bit (drilling end). Those holes are directly connected to two (2) large flushing airways, placed at 160 degrees between each other; these flushing grooves transfer the drill debris from the drilling end of the driver up to the hammer zone. To help keep a good flow of debris, two (2) other smaller air holes in the flushing airways help give the cuttings some velocity.

This model also comes with a "rotational-crusher zone." That protective zone is placed at the end of the flushing airways just under the hammer spline drive. This zone (patent pending) is to improve evacuation by preventing accumulation of rocks and gravel at a recess point. By turning the driver against a fixed casing, the rock is crushed into smaller particles and then evacuated through the casing.

Xs S Systems (Sizes and Specs)

System	Casing O.D.	Casing I.D.	Wall	Crown O.D. (A)	Crown (C)	Square Bit O.D. (B)	Hammer
Xs S 4.5	4.5"	4.1"	0.197"	5.16"	3.45"	3.45"	3"
Xs S 5	5"	4.38"	0.31"	5.565"	3.73"	3.73"	4"
Xs S 5.25	5.25"	4.47"	0.39"	5.655"	3.72"	3.72"	4"
Xs S 5.5	5.5"	5.106"	0.197"	6.25"	4.315"	4.315"	4"
Xs S 5.500-B	5.5"	4.72"	0.39"	5.91"	4"	4"	4"
Xs S 5.500-C	5.5"	4.634"	0.433"	5.75"	3.815"	3.815"	4"
Xs S 5.75	5.75"	5.12"	0.315"	6.25"	4.315"	4.315"	4"
Xs S 6	6"	5.22"	0.39"	6.4"	4.57"	4.57"	5"
Xs S 6.625	6.625"	6.25"	0.188"	7.5"	5.5"	5.5"	6"
Xs S T 6.625	6.625"	6"	0.312"	7.5"	5.5"	5.5"	6"
Xs S 7	7"	6.45"	0.275"	7.7"	5.7"	5.7"	6"
Xs S 7.625	7.625"	6.69"	0.47"	7.94"	5.94"	5.94"	6"
Xs S 8.625	8.625"	8.25"	0.188"	9.5"	7.5"	7.5"	6"
Xs S T 8.625	8.625"	8"	0.312"	9.5"	7.5"	7.5"	8"
Xs S 10	10"	9.528"	0.236"	11.23"	8.42"	8.42"	8"
Xs S 10.125	10.125"	9.49"	0.315"	11.19"	8.38"	8.38"	8"
Xs S 10.5	10.5"	9.5"	0.5"	11.19"	8.38"	8.38"	8"
Xs S 10.75	10.75"	10"	0.375"	11.7"	8.89"	8.89"	8"
Xs S 12.75	12.75"	11.75"	0.5"	13.25"	10.19"	10.19"	8 / 10"
Xs S 14	14"	13"	0.5"	15"	11.34"	11.34"	12"
Xs S 16	16"	15.25"	0.375"	17"	13.44""	13.44"	12"
Xs S 16.5	16.5"	15.32"	0.59"	17.22"	13.66"	13.66"	12"
Xs S 18	18"	16.82"	0.59"	18.72"	15.16"	15.16"	12"
Xs S 20	20"	19"	0.5"	21"	15.94"	15.94"	12"
Xs S 22	22"	21"	0.5"	23"	17.94"	17.94"	18"
Xs S 24	24"	23"	0.5"	25"	19.69"	19.69"	18"
Xs S 26	26"	25"	0.5"	27"	21.44"	21.44"	18"
Xs S 28	28"	27"	0.5"	29"	23.44"	23.44"	18"
Xs S 30	30"	29"	0.5"	31"	24.94"	24.94"	18"
Xs S 32	32"	31"	0.5"	33"	26.94"	26.94"	18"
Xs S 34	34"	33"	0.5"	35"	28.69"	28.69"	18"
Xs S 36	36"	35"	0.5"	37"	30.44"	30.44"	18"
The values indicated in this chart should be used as indications only.

Step 1: Once the crown has been welded to casing, align the driver between the crown flats.

Step 2: Lower the driver and turn clockwise to lock the driver with the crown.

Step 3: Drill through any formation. Direct energy is transferred to the crown by the driver. The driver, the lower part of the crown, and the drill string rotate together while the upper part of the crown and the casing do not rotate (welded together).

Step 4: Once the casing reaches the rock, turn counter clockwise and pull back the drill string. Install and drill through with the square bit for maximum hole diameter.

Xs S System Video

Xs F System

For shallow blind holes

Easy to retrieve the casing

Oversized crown for concrete injection

Fast and Economical

Description: The Xs F (Floating) overburden system is especially designed for piling, micropiling, anchor installation, and other civil engineering applications in shallow holes whether the casing is left in the hole or pulled. The Xs F can be used with any size of casing. The life of this system is much improved because of its geometry, which has two (2) internal shoulders (donut). One transfers impact to the drive shoe, giving the necessary force to drive down casing. The second transfers energy directly to the crown bit for drilling.

Advantages Over:

Advantages over Eccentric System

Concentric: On the crown bit there are carbide buttons all around the periphery of the hole, as opposed to approximately one third (1/3) on an eccentric system. That means for each turn you do with a ring bit you have in fact drilled a deeper portion of that hole.

Hammer: If you have a lot of bounders 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.

Advantages Over Other Ring Bit Systems

Advantages Over Wing Bit System

Concentric: On the crown bit there are carbide buttons all around the periphery of the hole, as opposed to approximately one third (1/3) on an eccentric system. That means for each turn you do with a ring bit you have in fact drilled a deeper portion of that hole.

Hammer: If you have a lot of bounders 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.

Components:

Very Easy to Use: This system has only 3 components: The driver bit, a welded ring, and a lost crown. As long as you keep turning in the same direction, the crown will stay in its locking grooves.

Driver Bit: The driver bit is the device that transfers impact and rotation to the crown bit for drilling. The driver bit locks into two flats on the casing crown, and they act together as a standard drill bit; both the driver bit and the crown have tungsten carbide buttons. The Driver bit drills a pilot hole of 3" below the crown to guide the direction of the casing in rough drilling. Afterwards this pilot space below the crown allows the square bit to turn without touching the crown.

Ring Bit: The crown bit is a single unit with Tungsten carbide, held on the driver only by the locking surface.

Driving Shoe: The driving shoe is welded to the casing and receives the impact from the driver bit down the casing. The drive shoe is the same O.D. as the casing to allow for easy retrieval.

Square Bit: The drill-through bit is specially shaped to pass through the crown's flats and to drill the sub-casing hole to a maximum hole diameter, enabling in most cases the use of a larger diameter hammer than the competition.

Easy to Unlock: By reversing the rotation the crown will automatically drop to the bottom of the hole.

Easy to Retrieve the Casing: If you have to retrieve the casing, this system is by far the best. Once the ring is dropped, nothing protrudes out of the casing. Minimal force is needed to pull back.

Re-Usable Weld Ring: If you retrieve the casing, you can re-use the welded ring.

Adaptable Drilling Diameter: If the casing needs to be grouted in the soil with a clearance, the manufacturer can make the crown of the Xs F system to the desired diameter.

Impact Zone: Direct energy from the hammer is transferred to the ring bit through two (2) recesses formed by the locking surface plus a projection all around the periphery of the driver (donut).

Evacuation: Two (2) big air holes are drilled in the face of the bit (drilling end). Those holes are directly connected to two (2) large flushing airways, placed at 160 degrees between each other; these flushing grooves transfer the drill debris from the drilling end of the driver up to the hammer zone. To help keep a good flow of debris, two (2) other smaller air holes in the flushing airways help give the cuttings some velocity.

Xs F Systems (Sizes and Specs)

System	Casing OD	Max. Wall	Crown OD (A)	Crown ID (B)	Crown A/F (C)	Driver OD	Hammer Size
Xs F 4.000	4.000"	0.375"	4.250"	2.790"	2.510"	3.190"	2"
Xs F 4.500-B	4.500"	0.250"	4.875"	3.550"	3.200"	3.950"	3" / 3.5"
Xs F 4.500-E	4.500"	0.500"	4.875"	3.100"	2.760"	3.440"	3" / 3.5"
Xs F 5.000	5.000"	0.250"	5.500"	4.030"	3.550"	4.420"	4"
Xs F 5.250-C	5.250"	0.500"	5.750"	3.810"	3.235"	4.230"	4"
Xs F 5.500-B	5.500"	0.375"	5.750"	4.260"	3.750"	4.690"	4"
Xs F"6.000-C	6.000"	0.472"	6.375"	4.330"	4.030"	5.000"	5"
Xs F"6.625-B	6.625"	0.272"	7.000"	5.450"	5.050"	6.030"	5"
Xs F"6.625-E	6.625"	0.500"	7.000"	4.900"	4.465"	5.550"	5"
Xs F 7.000-B	7.000"	0.276"	7.250"	5.900"	5.350"	6.395"	5"
Xs F 7.000-C	7.000"	0.395"	7.375"	5.760"	5.150"	6.180"	5"
Xs F 7.000-D	7.000"	0.500"	7.250"	5.550"	4.940"	5.950"	5"
Xs F 7.625-D	7.625"	0.638"	8.000"	5.580"	5.080"	6.300"	6"
Xs F 8.625	8.625"	0.500"	9.000"	7.150"	6.540"	7.570"	6"
Xs F 9.625-B	9.625"	0.513"	10.000"	7.750"	7.050"	8.540"	8"
Xs F 9.625-C	9.625"	0.563"	10.000"	7.500"	6.800"	8.450"	8"
Xs F 10.750	10.750"	0.670"	11.000"	8.600"	8.000"	9.350"	8"
Xs F 12.750	12.750"	0.375"	13.000"	11.080"	10.300"	11.930"	10"
Xs F 12.750-B	12.750"	0.500"	13.000"	10.860"	10.050"	11.930"	10"
Xs F 13.375-C	13.375"	0.513"	13.625"	11.480"	10.650"	11.690"	10"
Xs F 14.000	14.000"	0.375"	14.500"	12.000"	11.250"	13.125"	10" / 12"
Xs F 16.000	16.000"	0.500"	16.500"	13.500"	12.500"	14.900"	12"
Xs F 18.000	18.000"	0.500"	18.500"	15.710"	14.770"	16.880"	12" / 15"
Xs F 20.000	20.000"	0.625"	20.500"	17.220"	16.060"	18.630"	15"
Xs F 22.000	22.000"	0.512"	22.500"	19.470"	18.310"	20.880"	18"
Xs F 24.000	24.000"	0.375"	24.500"	21.720"	20.560"	23.130"	18" / 20"
Xs F 26.000	26.000"	0.625"	26.750"	23.220"	22.060"	24.630"	24"
Xs F 28.000	28.000"	0.625"	28.750"	25.220"	24.060"	26.630"	24"
Xs F 30.000	30.000"	0.625"	30.750"	26.600"	25.400"	28.500"	24"
Xs F 32.000	32.000"	0.625"	32.750"	28.600"	27.400"	30.500"	24"
Xs F 36.000	36.000"	0.625"	36.750"	32.600"	31.400"	34.500"	30"

Xs F System Video

Xs T System

Complete drilling system (crown, driver, and square bit)

You can use a bigger hammer in bedrock

Choice of crown configurations

Description: The Xs T (thick) overburden system can be used with any size casing, but is predominantly designed for thick wall casing. The Xs T design has four (4) recessed portions to transfer impact directly from the driver to the crown, giving the necessary force to drill and drive down casing. The crown has a socket that fits over the casing for better welding alignment. This design allows the driller to be able to drill the same diameter in bedrock as the casing I.D. with our special square bit and allows the use of larger DTH hammers.

Advantages Over:

Advantages over Eccentric System

Concentric: On the crown bit there are carbide buttons all around the periphery of the hole, as opposed to approximately one third (1/3) on an eccentric system. That means for each turn you do with a ring bit you have in fact drilled a deeper portion of that hole.

Hammer: If you have a lot of bounders 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.

Advantages Over Other Ring Bit Systems

Advantages Over Wing Bit System

Concentric: On the crown bit there are carbide buttons all around the periphery of the hole, as opposed to approximately one third (1/3) on an eccentric system. That means for each turn you do with a ring bit you have in fact drilled a deeper portion of that hole.

Hammer: If you have a lot of bounders 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.

Components:

Driver Bit: The driver bit is the device that transfers impact and rotation to the crown bit for drilling. The driver bit locks into four flats on the casing crown, and they act together as a standard drill bit; both the driver bit and the crown have tungsten carbide buttons. The Driver bit drills a pilot hole of 3" below the crown to guide the direction of the casing in rough drilling. Afterwards this pilot space below the crown allows the square bit to turn without touching the crown.

Crown Bit: The crown bit is a two-piece unit permanently connected together. The upper part is welded to the casing and the lower part, which has Tungsten Carbide, is free to rotate with the driver bit.

Square Bit: The drill-through bit is specially shaped to pass through the crown's flats and to drill the sub-casing hole to a maximum hole diameter, enabling in most cases the use of a larger diameter hammer than the competition.

Impact Zone: Direct energy from the hammer is transferred to the crown bit through four (4) recesses formed by the locking mechanism.

Evacuation: Two (2) big air holes are drilled in the face of the bit (drilling end). Those holes are directly connected to two (2) large flushing airways, placed at 160 degrees between each other; these flushing grooves transfer the drill debris from the drilling end of the driver up to the hammer zone. To help keep a good flow of debris, two (2) other smaller air holes in the flushing airways help give the cuttings some velocity.

Xs T Systems (Sizes and Specs)

System	Casing OD	Max. Wall	Crown OD (A)	Crown ID (B)	Crown A/F (C)	Driver OD	Sq. Bit OD	Hammer Size
Xs T 4.500	4.500"	0.196"	5.500"	4.070"	3.660"	4.040"	4.000"	3" / 3.5"
Xs T 4.500	4.500"	0.250"	5.500"	3.970"	3.540"	3.940"	3.938"	3" / 3.5"
Xs T 4.500	4.500"	0.315"	5.250"	3.800"	3.400"	3.770"	3.750"	3" / 3.5"
Xs T 5.000	5.000"	0.280"	5.875"	4.460"	3.960"	4.925"	4.375"	4"
Xs T 5.500	5.500"	0.313"	6.250"	4.875"	4.375"	4.815"	4.813"	4"
Xs T 5.500	5.500"	0.250"	6.500"	5.030"	4.525"	4.970"	5.000"	4"
Xs T 6.000	6.000"	0.393"	6.750"	5.210"	4.780"	5.160"	5.125"	5"
Xs T"6.625	6.625"	0.280"	7.500"	6.060"	5.530"	5.970"	6.000"	5" / 6"
Xs T 7.000	7.000"	0.250"	8.000"	6.500"	6.000"	6.445"	6.438"	6"
Xs T 7.000	7.000"	0.188"	8.000"	6.625"	6.125"	6.570"	6.563"	6"
Xs T 7.000	7.000"	0.375"	8.000"	6.280"	5.750"	6.200"	6.188"	6"
Xs T 7.625	7.625"	0.313"	8.750"	7.000"	6.420"	6.920"	6.375"	6"
Xs T 8.625	8.625"	0.250"	9.500"	8.060"	7.530"	7.970"	8.000"	6"
Xs T 10.750	10.750"	0.375"	12.000"	10.000"	9.250"	9.930"	9.938"	8"
Xs T 12.750	12.750"	0.450"	14.000"	11.850"	10.580"	11.750"	11.813"	8"
Xs T 14.000	14.000"	0.500"	15.500"	13.000"	11.780"	12.900"	12.938"	10" / 12"
Xs T 16.000	16.000"	0.270"	18.500"	15.450"	13.580"	15.375"	15.375"	12"
Xs T 18.000	18.000"	0.500"	20.000"	17.070"	15.375"	16.950"	16.938"	12" / 15"
Xs T 20.000	20.000"	0.515"	22.500"	18.950"	17.080"	18.875"	18.875"	15"
Xs T 22.000	22.000"	0.625"	24.000"	20.750"	18.950"	20.625"	20.625"	18"
Xs T 24.000	24.000"	0.625"	26.000"	22.750"	20.950"	22.625"	22.625"	18"
Xs T 26.000	26.000"	0.625"	28.000"	24.750"	22.950"	24.625"	24.625"	24"
Xs T 28.000	28.000"	0.625"	30.000"	26.750"	24.950"	26.625"	26.625"	24"
Xs T 30.000	30.000"	0.625"	32.500"	28.750"	26.450"	28.500"	28.500"	24"
Xs T 32.000	32.000"	0.625"	34.500"	30.750"	28.450"	30.500"	30.500"	24"
Xs T 36.000	36.000"	0.625"	38.500"	34.750"	32.450"	34.500"	34.500"	24" / 30"

Xs T System Video

Xs GT System

The Xs GT overburden system is especially designed for piling, micropiling, anchor installation, and other civil engineering applications. Overburden can be cased and sub-casing anchor sockets drilled in the bedrock in one operation without removing the drill string.
Xs GT System

Pass through

Same driver for casing and socket drilling

Easy to start the socket drilling operation

Socket diameter same as casing I.D.

Description: The Xs GT system is predominantly designed for piling, micropiling, anchor installation, and other civil engineering applications where casing is left in the hole. Overburden can be cased and sub-casing anchor sockets drilled in the bedrock in one operation, with the same driver-bit, without removing the drill string. The driver has four (4) recesses that transfer impact directly to the crown, giving the necessary force to drill and drive down casing. The drilling end of the driver bit, like conventional bits, is bigger than the body itself to provide clearance when drilling in bedrock.

Components:

Driver Bit: The driver bit is the device that transfers impact and rotation to the crown bit for drilling. The driver bit locks into four flats on the casing crown, and they act together as a standard drill bit; both the driver bit and the crown have tungsten carbide buttons. The Driver bit drills a pilot hole of 3" below the crown to guide the direction of the casing in rough drilling. Afterwards the same driver bit can be used for sub-casing drilling.

Crown Bit: The crown bit is a two-piece unit permanently connected together. The upper part is welded to the casing and the lower part, which has Tungsten Carbide, is free to rotate with the driver bit.

Step 1: Once the crown has been welded to the casing, align the driver between the crown flats.

Step 2: Lower the driver bit and turn clockwise to lock the system together.

Step 3: When the casing reaches the rock, turn counter clockwise and pull back 12 inches.

Step 4: Turn 90 degrees and go back through the crown for sub-drilling.

Impact Zone: Direct energy from the hammer is transferred to the crown bit through *two/four (4) recesses formed by the locking surface.

Evacuation: Two (2) big air holes are drilled in the face of the bit (drilling end). Those holes are directly connected to two (2) large flushing airways, placed at 160 degrees between each other; these flushing grooves transfer the drill debris from the drilling end of the driver up to the hammer zone. To help keep a good flow of debris, two (2) other smaller air holes in the flushing airways help give the cuttings some velocity.

Xs GT Systems (Sizes and Specs)

System	Casing O.D.	Casing Max Wall	Crown I.D.	Crown A/F	Crown O.D.	Drive O.D.	Hammer
Xs GT 4.500	4.500"	0.250"	4.000"	3.300"	5.200"	3.950"	3"
Xs GT 5.000	5.000"	0.300"	4.400"	3.700"	5.625"	4.350"	4"
Xs GT 5.250	5.250"	0.350"	4.550"	3.850"	5.750"	4.500"	4"
Xs GT 5.500	5.500"	0.350"	4.800"	4.100"	6.125"	4.850"	4"
Xs GT 6.000	6.000"	0.390"	5.220"	4.470"	6.500"	5.170"	4"
Xs GT 6.625	6.625"	0.390"	5.845"	5.145"	7.100"	5.795"	5"
Xs GT 7.000	7.000"	0.310"	6.380"	5.680"	7.630"	6.330"	5" / 6"
Xs GT 7.625	7.625"	0.470"	6.685"	5.836"	8.180"	6.635"	6"
Xs GT 8.625	8.625"	0.500"	7.625"	6.775"	9.125"	7.575"	6"
Xs GT 10.750	10.750"	0.500"	9.750"	8.550"	11.800"	9.700"	8"
Xs GT 12.750	12.750"	0.500"	11.750"	10.550"	12.600"	11.700"	8" / 10"
Xs GT 14.000	14.000"	0.500"	13.000"	11.800"	15.050"	12.950"	10"
Xs GT 18.000	18.000"	0.500"	17.000"	15.500"	20.100"	16.900"	12"
Xs GT 22.000	22.000"	0.500"	21.000"	19.500"	24.100"	20.900"	12"
Xs GT 26.000	26.000"	0.500"	25.000"	23.500"	28.100"	24.900"	12"
Xs GT 30.000	30.000"	0.500"	29.000"	27.500"	32.100"	28.900"	12"
Xs GT 36,000	36,000"	0.500"	35.000"	33.500"	38.100"	34.900"	12"

The values indicated in this chart should be used as indications only.

Xs GT System Video

Xs FP/FPH - Umbrella, Drainage, and Injection Applications

When working horizontal, this system works without locking grooves (like our competitors systems) it is much easier to pull back from the hole. The operator doesn’t have to lose precious time trying to unlock.

We also offer a special system to drill into clay formations. This system has been adapted to be more aggressive when drilling (better penetration rate) and allow more space for sticky cuttings to come out.

Used with top hammer drills or DTH hammer, these systems were developed mainly for tunnelling applications in unconsolidated formations.

The standard driver bit comes without locking grooves and it is called the NLS (no locking system). The purpose of the driver bit is to transmit the rotation and the percussion to the crown bit. The NLS has been proven as the best and the most user friendly system on the market. When the drilling phase has been completed, it is very easy to disengage from the crown bit by simply pulling straight back.

Ranging from 3’’ up to 6’’, the Xs FP (forepoling) system and Xs FPH (forepoling hybrid) are used in umbrella, drainage and injection applications with top hammer or DTH drills. These systems were developed mainly for use in tunnelling applications in unconsolidated formations. The Xs FPH has more impact surface and greater air channels for evacuation of the cuttings. This system can be used with standard crowns or with a special crown adapted for drilling through clay.
The driver bit comes in 2 different versions; with locking grooves for vertical drilling and without locking grooves for horizontal drilling. The version without the locking grooves is called the NLS (no locking system). The purpose of the driver bit is to transmit the rotation and the percussion to the crown bit only.
The NLS is proven to be the best and the most user friendly system on the market. When the drilling phase has been completed, it is very easy to disengage from the crown bit by simply pulling straight back.

Components

Driver Bit The driver bit is the device that transfers impact and rotation to the crown bit for drilling. The driver bit is inserted into the crown bit and they act together as a standard drill bit. Both the driver bit and the crown bit have tungsten carbide buttons. The Driver bit drills like a pilot bit, making a 1 1/2″ hole ahead of the crown to guide the direction of the casing in rough drilling.

Crown Bit The crown bit is a two-piece unit permanently connected together. The upper part is welded to the casing, and the lower part, which has the Tungsten Carbides, is free to rotate with the driver bit.

Impact zone: Direct Energy from the top hammer is transferred to the crown bit through different shoulders on the driver bit.

Evacuation: Two (2) air holes are drilled in the face of the driver bit (drilling end). These holes are directly connected to two (2) flushing airways. These flushing grooves transfer the drilling debris from the drilling end of the driver up to the drill steel zone. To help in keeping a good flow of debris, two (2) other smaller air holes have been added in the flushing airways to help give the cuttings some velocity.

Xs FP/FPH Systems (Sizes and Specs)

For FPH Systems

System	Casing OD	Max. Wall	Crown OD (A)	Crown ID (B)	Driver OD	Thread Size
Xs FP 3.000	3.000"	.313"	3.440"	1.950"	2.330"	R32
Xs FPH 3.000	3.000"	.313"	3.438"	1.800"	2.300"	R32
Xs FP 3.500	3.500"	.313"	4.000"	2.450"	2.800"	T38
Xs FPH 3.500	3.500"	.313"	4.000"	2.300"	2.800"	T38
Xs FP 4.000	4.000"	.355"	4.500"	2.700"	3.200"	T45
Xs FPH 4.000	4.500"	.355"	5.000"	3.250"	3.750"	2"
Xs FP 4.500	4.500"	.355"	5.000"	3.200"	3.700"	2"
Xs FPH 4.500	5.000"	.393"	5.500"	3.650"	4.130"	3.5"
Xs FP 5.000	5.000"	.393"	5.500"	3.580"	4.130"	3.5"
Xs FPH 5.000	5.500"	.393"	6.000"	4.250"	4.570"	3.5"
Xs FP 6.000	6.000"	.393"	6.500"	4.650"	5.130"	4"
Xs FPH 6.000	6.000"	.393"	6.500"	4.530"	5.130"	4"

Xs FP/FPH System Video

Xs RU System

Description: The Xs RU (retrievable/reusable) overburden system is used with any size casing that needs to be retrieved from the ground. The crown O.D. is only slightly bigger than the O.D. of the casing and is butt-welded to reduce drag when pulling the casing. The Xs R system is used with a standard size hammer because the crown is smaller in dimensions; this system can be made under Xs S or Xs T versions.

Advantages Over: