Product info

Solitary ring system for down the hole hammer

DTH SR products are economical and cost-effective to use when the ground is homogenous with few small boulders. With the same pilot you can install piles and interlocked Pipe-Pile-Wall piles just by using ring bits with different outside diameters. Robit® Solitary Ring Casing Systems are available for all the common Down The Hole hammers and can be used for all applications where the casing is left in the ground.

Casing OD (mm)219,1
Casing OD (in.)8 ⅝
Casing Max Wall (mm)12,7
Casing Max Wall (in.)0.500
Ring bit ID (mm)127
Ring bit ID (in.)5.000
Ring bit OD (mm)273
Ring bit OD (in.)10.748
Pilot bit OD (mm)190,7
Pilot bit OD (in.)7.508
Hammer6”
Product number03-010-219-3875

Compatible products

DTH-RoX SR XL 219,1/12,7
Pilot, Down the Hole Hammer, Solitary ring
DTH-RoX SR XL 219,1/12,7
Impact Shoe, Down the Hole Hammer, Solitary ring