These spanners have been purpose designed to suit hydraulic rotary percussive drilling machines such as "Cram Ram Track" rotary bolters.
The socket and the one piece body of these spanners are machined from high tensile solid bar to provide an improved impact and torsion resistance.
The spanner socket is assembled to the spanner body with a fine right hand thread and then welded to provide additional retention to the spanner body. The assembled spanner is then hardened and tempered for strength and impact resistance.
These installation spanners are available in a nominal overall length of 400mm as standard.
The standard installation socket suits 24mm rock bolt hexagonal nuts (36 A/F). Other sizes are available to suit larger and smaller hexagon nut sizes as well as various square configurations.
All DSI installation spanners are assembled on a mandrill to ensure concentricity with the machine rotation.
Packaging
Spanners are supplied as required in hessian bags or cardboard boxes.
Packaging
Only DSI rock bolt components should be used in order to obtain optimum performance of the bolt system.
DSI's Mining Products Division is Quality Assured to ISO 9001:2000, Registration No.QAC/R61/0315.
