Product info

Non-Stop system for down the hole hammer

Robit® Non-Stop system is an advanced casing system that start to drill with a casing and then to continues beyond it without tool changes. No need to pull out the pilot bit and the drill string to replace it by a conventional down the hole bit. A single operation disconnects the pilot and the ring from the casing. The drilling can be continued free from the casing tube without losing the drilling diameter.

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)150
Ring bit OD (in.)5.906
Pilot bit OD (mm)116
Pilot bit OD (in.)4.567
Hammer4”
Product number03-541-139-0169

Compatible products

DTH-RoX NS 139,7/10
Casing Extension, Down the Hole Hammer, Non-Stop
DTH-RoX NS 139,7/10
Ring, Down the Hole Hammer, Non-Stop