TMG Manufactures a line of 4-speed gearbox drill heads for geotechnical, water well, micropile and rotary drill rigs.
These rotary drilling heads can be adapted to almost all models of soil drilling machines, and feature a spring-loaded floating head, 4 speeds of drilling, and a built-in wet swivel system for drilling with mud or water.
From the small MS-160 head that has 1,833 rpm and 1,404 ft lbs (1,903 Nm) of torque, to the large ML-630, which reaches 468 rpm and 11,004 ft lbs (14,919 Nm) of torque, our 4-speed rotary heads also have interchangeable couplings, for various sizes of drill rods, and an easy two hose hydraulic connection, and NO electronics. Each gearbox drill head comes with a universal adapter plate.
