IBO Bolt and Accessories
Button Bit
The FATE Engineering Button Bit delivers high-performance, durable drilling in hard rock and minerals.
About the product
Button Bit
Button bits are high-strength drilling bits used in tunneling, mining, and rock-breaking applications. Their round or hemispherical hard metal buttons allow them to drill hard rocks and minerals quickly and efficiently. Button bits manufactured by FATE Engineering are distinguished by their durability, high wear resistance, and optimal energy transfer.
The Button Bit's design provides maximum contact surface area on the rock during drilling, improving fracture performance and reducing drilling time. Various diameter and button hardness options are available to suit different rock hardnesses and drilling rigs. This allows for effective use in both challenging and variable geological conditions.
Areas of Use
Rock drilling in tunnel and mining excavations
Pre-blast drilling operations
Road and dam construction
Pre-drilling in rock crushing and crushing-screening plants
Features
High-hardness tungsten carbide buttons
Maximum drilling performance and low wear
Diversified designs for different rock types
Energy efficiency and long life
Compatibility with different drilling machines
FATE Engineering Button Bits provide efficient and safe drilling operations in tunneling and mining projects by offering high performance, reliability, and long life.
Technical data
Button Bit technical data.
SELF DRILLING ANCHOR 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
Cross Bit
Four-wing cross bit with tungsten carbide inserts, giving straight holes and steady penetration in fractured, medium-hard rock. Continuous cutting edges sweep the hole bottom without gaps, keeping the bit on line through fractures. The central port delivers water, air or grout to clear cuttings. On self-drilling anchors (SDA) it is fitted to the bar tip and remains in the hole as a sacrificial bit. In very hard, abrasive rock a button bit is preferred, and in clay or loose ground a clay bit.
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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.