In-the-hole longhole drill rigs
KR-series Boosters
![KR-series Boosters](/siteassets/images/underground-drill-rigs/boosters-and-compressors/kr-series-boosters/kr-series-main.jpg?width=480&height=293&rmode=crop&rsampler=bicubic&compand=true&quality=90&v=1695272755&hmac=04f4a1b2e03d0eea05ee157625005deb4a8d7e9285b601531d8bea2d6c1a9cf6)
Sandvik KR-series portable, electric reciprocating boosters are designed to supply air to 3 - 8 inch in-the-hole (ITH) hammers and V-30 reaming heads across various altitudes. These boosters are compact, mobile and self-contained, making them easy to transport and place in the mine drifts. They deliver constant air supply to hammers on Sandvik in-the-hole (ITH) drills.
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Sturdy construction
With robust frames and field-proven components, KR551 and KR1101 boosters are reliable and cost-effective. The components’ superior cooling capacity prevents overheating, further enhancing their performance and lifespan.
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Easy maintenance
KR-series boosters feature easy-to-access components that allow repairs in the field.
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Stabilized for safety
These portable boosters are stabilized with hydraulic jacks during operation and service to ensure maximum safety.
![KR-series Boosters](/siteassets/images/underground-drill-rigs/boosters-and-compressors/kr-series-boosters/kr-series-001.jpg?width=480&height=270&rmode=crop&rsampler=bicubic&compand=true&quality=90&v=1695272755&hmac=4e363d52dbe8489ea96dc317fe53acf17581fb103ef0c0cbbfac3a40ad45da68)
Learn more about KR-series Boosters features
Transportable package
The boosters come with a heavy-duty towing package for easy transportation in mine drifts.
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