IBO Bolt and Accessories
Cross Bit
The FATE Engineering Cross Bit provides efficient, long-lasting drilling in high-strength rock.
About the product
Cross Bit
Cross Bits are high-strength drilling bits used primarily in tunnel and mine drilling. Their cross-arranged tungsten carbide buttons apply even pressure to the rock surface, enhancing fracture performance and improving drilling efficiency. Cross Bits manufactured by FATE Engineering offer high wear resistance and long service life.
The Cross Bit's design is optimized for rocks of varying hardness, providing effective drilling performance in both hard and medium-hard soils. The dispersion of debris generated during drilling extends bit life and reduces drilling time. They are compatible with various drilling rigs with a variety of diameters and button hardness options.
Applications
Rock drilling in tunnels and mine galleries
Pre-blast drilling operations
Rock breaking in dam and road construction
Drilling applications in difficult geological conditions
Features
High-hardness tungsten carbide buttons
Maximum breaking and drilling efficiency
Low wear and long service life
Designed for various rock types
Compatible with different drilling rigs
FATE Engineering Cross Bits provide safe and efficient drilling in tunneling and mining projects by providing high performance, reliability, and long life.
Technical data
Cross Bit technical data.
CROSS BIT
| DIMENSIONS | R-25/41 | R-32/51 | R-32/64 | R-32/76 | R-38/76 | R51-110 |
|---|---|---|---|---|---|---|
| OUTSIDE DIAMETER (mm) | 41,00 | 51,00 | 64,00 | 76,00 | 76,00 | 110,00 |
| WEIGHT (kg) | 0,36 | 0,41 | 0,64 | 1,22 | 1,24 | 2,70 |
| THREAD TYPE | ISO 10208 | ISO 10208 | ISO 10208 | ISO 10208 | ISO 10208 | ISO 10208 |
Gallery
In the same group
IBO Bolt and Accessories
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Tunnel
Self-Drilling Anchor (SDA)
A hollow, continuously threaded steel anchor system for loose, weathered and collapsing ground that combines drilling, anchoring and grouting in a single operation. Fitted with a drill bit, the bar advances into the ground acting as the drill rod, and remains in place as support once installation is complete. There is no need to insert a bolt into a pre-drilled hole, even where the hole collapses. Cement grout pumped through the bar’s central channel exits through openings in the drill bit, filling the space around the anchor and transferring load between the ground and the anchor. Depending on the method, grouting can be carried out during or after drilling. Bars are joined with couplers to reach the required length, and the anchor head is completed with a plate and nut. Used in tunnel and mine support, slope stabilisation and ground improvement, the bar type, length and drill bit type are selected according to ground conditions and project requirements.
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Tunnel
Button Bit
A drill bit used in top hammer drilling for tunnel and mine excavation and for drilling rock bolt holes. Tungsten carbide buttons set into a heat-treated steel body transfer impact energy to the rock and break it. The bit rotates slightly after each blow, so the buttons strike a fresh point on the rock and advance the hole. Flushing holes and channels help clear the cuttings from the hole. Spherical or ballistic button geometry and face design are selected according to rock strength, abrasiveness and fracturing. Produced in a range of diameters with R32, T38 and T45 thread connections; the bit is matched to the hole diameter and drill string.
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Tunnel
SDA Coupler
Coupler that joins self-drilling anchor (SDA) bars to extend the anchor to the required length, rated to match the ultimate load of the bar. It is cut and threaded from seamless tube produced from steel billet in our rolling mill, so every step from raw material to finished part is traceable. Bars enter the coupler to equal depth from both ends, giving full thread engagement on each side. Load capacity is verified by tensile testing. Available in R25–R38 and T38–T51 threads, in lengths of 150–225 mm. Made in the same plant as the bar and nut, so it does not reduce the load capacity of the anchor system.
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Tunnel
Nut
Hex nut for self-drilling anchors (SDA) that locks the plate to the bar and transfers load into it, rated to match the ultimate load of the bar. Its spherical seat, used with a dome plate, keeps the load on axis when the anchor is installed at an angle. Made for R32 to R51 threads in the same plant as the bar and coupler.
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Tunnel
PCD Button Bit
Button bit with ballistic (pointed) tungsten carbide buttons, giving a higher penetration rate than spherical buttons in medium-hard, low-abrasive rock. The pointed profile penetrates deeper and concentrates impact energy on a smaller area. Side flushing grooves clear cuttings quickly. In very hard, abrasive rock, where ballistic buttons wear faster, a spherical button bit is preferred. Used for tunnel face drilling, rock bolt holes and self-drilling anchors (SDA).
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Tunnel
Bearing Plate
Domed bearing plate that spreads anchor load over the rock or shotcrete surface, rated to match the ultimate load of the bar. The pressed dome stiffens the plate. Used with a spherical nut, it keeps the load on axis when the anchor is installed at an angle. Flattening of the dome under overload gives a visible warning on site. Compatible with self-drilling anchors (SDA) and SN rock bolts, made in the same plant as the bar, nut and coupler.
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Tunnel
Centraliser
The FATE Engineering Centraliser keeps IBO Bolts centred during drilling and grouting for safe and efficient anchoring.