Drilling into solid rock formations produces incredible high-frequency vibrations. The resulting load on the drill string not only causes premature equipment failure, but it can damage the borehole—both of which inflate the drilling cost per foot. Download our checklist as a quick reference.
Shock subs are blast hole drilling tools engineered to absorb the vibrational impact of surface mining. By protecting the drive heads and mast from the damage caused by axial and torsional shock vibration, the shock sub prolongs the life of drill components, improving run length and keeping downtime to a minimum. It also holds the drill bit in place, allowing a better penetration rate while protecting the expensive motor from bounce-out damage. All of this translates into a lower drilling cost per foot and a more productive operation.
Past dampening methods offered only minor vertical cushioning, prompting Utex engineers to develop a more effective shock sub. Impact and vibration reduction sub technology has been reengineered to provide radial stress relief as well as a better vertical cushion. This allows the shock absorbers to reduce accelerations induced at the drill head by as much as 65%, according to an independent field study. The result: a boost in productivity throughout the entire drilling process.
Using modular design, Utex has engineered a durable shock sub with fully replaceable wear components and no welding required. The resulting blast hole drilling tool is easier, safer and less expensive to refurbish. Some models are repairable right on the drill, which means less downtime for mining operations.
King Cobra Shock Sub
The King Cobra shock absorber boosts productivity while shielding equipment from the harsh conditions of blast hole drilling. Sizes range from 14 to 28 inches, with a pull down load range of up to 150,000 pounds.
Our SmoothHammer product line mitigates impact for both rotary and percussion drilling, with pull down loads of up to 100,000 pounds.
We AccomplishedCASE STUDY
Dampening the vibrations created when drilling through solid rock has always posed a challenge for the mining industry. Past vertical cushioning methods failed to prevent serious equipment damage—until Utex developed a shock sub with an enlarged dampener designed to augment the vertical cushion while also relieving radial stress. In a field study performed by an independent geotechnical and materials engineering company, our shock sub technology reduced vibratory acceleration in the X, Y, and Z directions by 30-65%.
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