Split Set Friction Rock Stabilizers (Friction Bolts)- Rock Bolts for Reliable Ground Support

Split Set Friction Rock Stabilizers (Friction Bolts)- Rock Bolts for Reliable Ground Support

Split Set friction rock stabilizers are widely used for underground or above ground applications in mines, tunnels, slopes, or wherever reliable ground support is needed.

Friction rock bolts produce superior holding power due to their unique design that exerts pressure against the rock over its full contact length immediately upon installation. When ground shift occurs, our rock bolts conform to the changing ground conditions. The result is a tight grip that actually grows stronger with time and ground movements, providing reliable ground support. Friction Bolts never needs tightening.

Friction rock stabilizers are a simple system requiring only 2 parts, a tube and bearing plate. Fast, easy installation takes usually less than a minute - just drill and drive. Split Set stabilizers come in 2 models. They are available in lengths and sizes to meet your needs and are made of standard and galvanized.

How Split Set Rock Bolts and Friction Bolts Work

Split Sets are rock bolts with only 2 parts, a tube and matching domed bearing plate. The high strength steel tube is slotted along its length. One end is tapered for easy insertion into a drill hole and the other has a welded ring flange to hold the bearing plate. With the bearing plate in place, the tube is driven into a slightly smaller hole, using the same standard percussion drill that made the hole. As the tube of the Rock Bolt slides into place, the full length of the slot narrows, causing radial pressure to be exerted against the rock over its full contact length.

Quality Standards

Split Set rock bolts (friction bolts) are manufactured to a highest standard of quality. Rigid standards of quality are achieved by exhaustive quality control, testing and inspection procedures. Detailed drawings specify materials, dimensions, and tolerances. Every Split Set is identified with model number, length, factory, rolling date, and heat lot of the steel.

Installation

Fast, easy installation of our friction rock bolts reduces bolting costs. Rock bolts can be installed quickly, usually in less than a minute, using a jack drill, a stoper, a roof-bolting jumbo, or any other type of drill. Installation can be done in a few easy step:
1.Drill the hole.

2.Replace the drill steel with a driver tool.

3.Slide the plate on the tube.

4.Drive the tube in with the drill / drifter

Rock Bolt Pull Tests Prove Sustained Grip

Pull tests help verify the effectiveness of the stabilizers upon installation and over periods of time. Pull collars may be used on selected tubes for later testing.