Ground support

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Rock bolts

Since its introduction 30 years ago the Swellex expandable rock-bolting system has gained wide recognition in the mining and tunneling industry. This unique rock bolt consists of a welded tube folded in upon itself, sealed at one end. It is re-expanded using a high pressure water flow provided by a special pump and adapter. The bolt is expanded inside the borehole drilled into the excavation wall. The installation process is easy and very similar to other rock bolt installation processes; making Swellex rock bolts accessible to all operators. Rock bolting systems are used to stabilize excavated rock mass in underground mines and tunnelling. Rock bolts are systematically arranged to transfer the load from the unstable surface or exterior of the rock, to the much stronger interior part of the rock. The rock mass can be reinforced by different types of rock bolts. Epiroc offers the following Swellex expandable rock bolting systems:

Premium rock bolts

• High yielding load
• Good energy absorbency
• Good deformability
• Competitive strength

High yielding load capacity

Designed as a daily support to provide safety and productivity for optimum control of the rock mass in mining and tunnelling. Made from specially engineered steel, these rock bolts offer high yielding and breaking load while perserving good elongation properties for safety. The connectable line of Swellex rock bolts, Pm24C, is a true alternative as long secondary support to secure potentially unstable areas or to control dilution while boosting productivity. The Swellex Premium line also comes in a plasticoated version for corrosion protection.

Manganese rock bolts

• High yielding load
• Good energy absorbency
• Very good deformability
• Special engineered steel and heat treatment

The concept of the ideal rock bolt

Designed and developed to match the "perfect rock bolt" criteria, the Manganese rock bolt has set a new benchmark for safety and reliability. Made from steel having a richer manganese content, and submitted to a specifically engineered process, Swellex Mn rock bolts have a high tensile strength and improved elongation that provide excellent energy absorbancy in challenging mining environments.

Maximum output guaranteed

We provide high quality spare parts and accessories to all our products. This is essential to guarantee maximum output and low lifecycle cost. All Epiroc Customer Centers and their network of distributors offer a complete range of spare parts and accessories. The staff is trained to support with advice and technical assistance to get the right part for every application. Only genuine parts can handle the stress that an Epiroc product causes on its components. And only original parts enable the owner to minimize downtime, to protect their investment and to contribute to productivity of your company.

Bolt adapts to hole irregularities and grips along its entire length.

The world's most comprehensive and productive range of rock drilling tools.