R38-R38-170MM Coupling Sleeve with full bridge type

Coupling sleeve is one of important component for top hammer drill string. There are 3 types of coupling components: Full Bridge, Semi-Bridge, Cross over adapter,Crossover coupling.

Full-Bridge Coupling  Sleeves

• Eliminates the potential for the coupling to creep along the threaded joints

• Typically used in surface applications

• Better uncoupling characteristics and tend to maintain tighter joints

• Less chance of jamming

• Best suited to machines equipped with independent rotation