Connetion of hollow bar and drill bit threads of different diameters.
Bigger drill hole by larger diameter drill bit.
Controlled transmission of the drilling energy from the IBO hollow bar anchor onto the drill bit.
Loose and soft ground conditions preferred.
Drill bit adapter couplings are available in almost any thread combination. Female to male adapters are available on request.
Adapter couplings are made to order from T38 thread T45 thread and more.
|Product Name||IBO Hollow Bar Thread||IBO Drill Bit Thread|
|R25/32R Adapter Coupling||R25 x 12.7||R32 x 12.7|
|R32/38R Adapter Coupling||R32 x 12.7||R38 x 12.7|
|R32/51R Adapter Coupling||R32 x 12.7||R51 x 12.7|
|R38/51R Adapter Coupling||R38 x 12.7||R51 x 12.7|
|R51/76T Adapter Coupling||R51 x 12.7||T76 x 12.7|
|T30/40T Adapter Coupling||T30||T40|
|T30/51R Adapter Coupling||T30||R51 x 12.7|
|T40/51R Adapter Coupling||T40||R51 x 12.7|
* Internal standard for T thread rolling. Compatible with DYWI Hollow Drill Rods or CTS IBO Hollow Bar Anchors.