The STR-138 is a mini drill rig for SPT soil tests, wireline coring and rotary drilling. Our STR-138 drill rig is the perfect entry level SPT rig. This small yet very powerful drilling rig is designed for tight job sites while still having all the features needed for SPT testing and wireline core drilling.
The STR-138 has a 38hp diesel engine, a water and mud pump, retractable mast, a 4 speed drill motor gearbox with wet swivel and dual wireline winches.
The STR-138 can be ordered with manual or automatic SPT hammer system.