Product info

Multi-use system for down the hole hammer

In some overburden drilling applications the casing has to be removed from the ground. This sets higher requirements on the durability of the equipment. Double groove design* in the casing shoe and the best materials available guarantee that Robit® Multi-Use system does not fail even in the most difficult conditions. Robit® Multi-Use system is available for all the common DTH hammers.

Casing OD (mm)139,7
Casing OD (in.)5 ½
Casing Max Wall (mm)10
Casing Max Wall (in.)0.394
Ring bit ID (mm)104
Ring bit ID (in.)4.094
Ring bit OD (mm)147
Ring bit OD (in.)5.787
Pilot bit OD (mm)117,5
Pilot bit OD (in.)4.626
Hammer4’’
Product number03-541-139-0166

Compatible products

DTH-RoX MU 139,7/10
Ring, Down the Hole Hammer, Multi-use