Raise boring drilling tools
RR890 pilot bit
- Diameter
- 229 - 406 mm / 9 - 16"
- Bit weight
- 45 - 212 kg / 100 - 467 lbs
- Max bit load
- 29 665 - 52 160 kg / 65 400 - 115 000 lbs
![](/siteassets/images/rock-tools/raise-boring-drilling-tools/rr890-bit-web.jpg?width=480&height=293&rmode=crop&rsampler=bicubic&compand=true&quality=90&v=1713168062&hmac=e1dd1a4659027a78810e06741c74f933cacc3ea978af463d4caf9d0fa3a7f5fc)
New RR890 raise boring pilot bit, thoroughly engineered for predictability and for giving your raise boring operations a competitive edge. With advanced and reliable design, it significantly extends service life, allowing for more drilling meters and reduced downtime.
Features
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Optimized design
The advanced and cutting-edge technology behind the RR890 pilot bit withstands higher loads and temperatures, enables more even rock breaking and reduces wear.
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Longer service life
Equipped with Charger® dual seal bearing, PowerCarbide® SH75 and full leg protection, the RR890 offers far longer service life of both the bearing and the inserts, and thereby increases your overall drilling distance.
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Reduced downtime
Say goodbye to frequent tripping, unexpected interruptions for bit replacements, and potential safety hazards for operators associated with unnecessary manual handling.
Product specifications
- Bit type
- PX
- Diameter
- 229 - 406 mm / 9 - 16"
- Bit weight
- 45 - 212 kg / 100 - 467 lbs
- Max bit load
- 29 665 - 52 160 kg / 65 400 - 115 000 lbs
- API thread
- 4 1/2 - 7 5/8"
*For more specific technical details, please contact a Rock Tools Sales Representative
![](https://img.youtube.com/vi/1SnOI0PtXdQ/maxresdefault.jpg)
![](/siteassets/images/rock-tools/raise-boring-drilling-tools/rr890-web-white-1.jpg?width=480&height=270&rmode=crop&rsampler=bicubic&compand=true&quality=90&v=1713171638&hmac=459d5311847b9769b536bb1f2453adda7ddde0943481ab7874227f4574c56f6c)
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