Guide to Selection of Micro Tunnelling Machines
Note - The following table is offered as a comparative guide only and a means to readily identify the most suitable Micro Tunneller for your needs. TerraMacs accepts no liability whatsoever where machines fail to perform to stated levels, as ground conditions, operator techniques, fluids, tooling and machine speeds are all highly variable and contribute to the effectivity and productivity of the Micro Tunnelling operation. It may be possible to tunnel larger diameters over shorter lengths or smaller diameters over longer lengths. We strongly recommend that you discuss your requirements with your distributor or contact TerraMacs before making a final machine selection.

Micro Tunnelling Machines
400 1041
Thrust & Pullback Newtons 400,000 1,041,000
Pounds 89,923 234,000
Torque & Spindle speed RPM Newton Metres 2,033 Nm at 200rpm & 4,068 Nm at 100rpm 5,100 Nm at 200 rpm, 8,510 Nm at 150 rpm & 13,558 Nm at 100 rpm
Foot Pounds 1,500 ft lbs at 200rpm & 3,000 ft lbs at 100rpm 3,763 ft lbs at 200rpm, 6,275 ft lbs at 150rpm & 10,000 ft lbs at 100rpm
Soft/Medium Ground Conditions Max. Diameter mm 500 1400
Inches 20 55
Max. Length Metres 50 50
Feet 164 164
Hard Ground Conditions Max. Diameter mm 400 1200
Inches 16 47
Max. Length Metres 30 30
Feet 98 98

Note - If the Micro Tunnelling specification required is not shown above, TerraMacs offers a custom design and build service. Please contact us to discuss your needs.