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 Speeds are 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.
