For Hydraulic Rotary Impact Drilling Machines
General Features
- 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.
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