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Product description

A drill string for bolting and surface applications

Adapted to the new generation of powerful hydraulic rock drills the Epiroc SR28 drill string transmits that power into the rock efficiently and reliably. With a faster rate of advance it lowers the cost per drill meter, boosting productivity and increasing safety and operator focus.


With 33% more material to resist the stresses leading to thread breakage, the Epiroc SR28 has a substantial increase in fatigue strength, with fewer tensile shock waves it reduces the stress in the string.


A stiffer rod means there is less breakage and productivity can be optimized by drilling straighter and more accurate holes.


Straightness and accuracy. Pure perfection

The conical shape means more quality material at the rod end to prevent breakage with less tendency for deviation when collaring. High quality materials combined with state-of-the-art manufacturing mean drifting equipment ready to hold up to heavy duty drilling cycles with superior product life.



The drill string is adapted to a new generation of powerful hydraulic rock drills with a considerably longer rod life and less wear thanks to the design of the conical shaped rope thread that facilitates rapid coupling and uncoupling.


Operator in focus

High operator acceptance thanks to easy coupling and uncoupling of the drill bits. Easy uncoupling provides a safer working environment and a happier operator.


Improved performance

Designed to reduce tensile shock waves in the drill string, a higher fatigue strength improves resistance and reliability, raising productivity with less wear, better fuel efficiency and sustainable drilling.

Quick facts


Epiroc SR28 drill string

Epiroc SR28 Drill string
Shank adapter
Hexagonal tapered drifter rod
Hexagonal drifter rod
Hexagonal speedrod
Tapered button bit
Button bit
Dome reaming bit