MAXDRILL Coupling Sleeves

Couplings are used in extension rod connection, its function is to transmit impact energy from the rock-drill piston, our extension drilling equipment, such as button bits, extension rods, couplings and shank adapters are designed to transmit the maximum impact energy to the rock with the least possible loss of energy in the drilling chain, throughout the world for top-hammer production drilling in mining, tunneling, construction and quarry work.

(1)Size: R25, R28, R32, R38, T38, T45, T51

(2)Length: 140mm-235mm

(3)Package: in wooden case or in carton.

(4)Productivity: 5000pcs/ month

(5)ISO9001:2008 certificated