• S-120 Power Swivel

    The National Oilwell Varco® Model S-120 Power Swivel is a hydraulic motor driven, pipe rotating machine.

    • The National Oilwell Varco® Model S-120 Power Swivel is a hydraulic motor driven, pipe rotating machine. This compact unit, weighing only 2,000 lbs., is rated to support tensile pipe loads of 120 tons at zero RPM and 65 tons dynamic load at 100 RPM. The S-120 Power Swivel incorporates a 2¾-inch bore gooseneck and washpipe assembly, allowing circulation through the stem while rotating or in a static condition.
    • The S-120 Power Swivel is rated at 8,100 ft.-lbs. maximum torque and 150 RPM maximum. The variable volume pump and hydraulic system allows the torque and speeds to be infinitely varied, within the above stated ranges, with no need to increase or decrease speed or torque.
    • The NOV® S-120 Power Swivel is supplied with a power unit of the correct size and horsepower output to match the swivel and with either air or electric remote control assemblies. All of these components are skid or trailer mounted to form a rugged portable unit.


    • FISHING AND WORKOVER OPERATIONS:  The S-120 Power Swivel is ideally suited to supply rotary power for internal and external cutting of casing, drill pipe, and tubing; for drilling out packers, plugs or cement, and for milling and casing scraping. The smooth and accurately controlled torque is essential in eliminating much of the danger of twisting off the work string or damaging a cutting tool or mill.
    • DRILLING OPERATIONS:  The S-120 is light weight and maneuverable, and is extremely effective for light to medium drilling jobs. The drilling application includes oil and gas wells, water wells, piling drilling for offshore platforms, piers and foundation drilling for construction.
    • CORING OPERATIONS:  The use of an S-120 for any type coring operation allows any length of desired core to be taken while ensuring less chance of damage to core tools or strings with its accurate and smooth torque.
    • CONTROL UNITS:  Control assemblies for these lines of NOV Power Swivels are two basic types — pedestal mounted remote air, and pedestal mounted remote electric.
    • TRANSPORT OPTIONS:  NOV’s Power Swivel units may be mounted on a bumper pull trailer, gooseneck trailer or skid.
    • POWER OPTIONS:  Purchasers have the option to match the NOV Power Swivel units with either John Deere®, Cummins® or Caterpillar® Engines.


    S-120 Power Swivel Specifications

    Models No. S-120S-120 with Brakes
    Assembly Part No. 84550/018


    Weight (lbs.) 2,0002,600
    Maximum Torque (ft. lbs.) 8,100 8,100
    Maximum Torque (ft. lbs.) 150150
    Nominal Load Rating (tons) 120 
    100 RPM Load Rating (tons) 65 
    Maximum Circulating Pressure 5,000 PSI 
    Radius of Torque ReinRetracted48-7/16-inch 
    Radius of Torque ReinExtended48-7/16-inch 
    Goose Neck Connection 3-inch – 8 Line Pipe Thread 
    Standard Saver Sub Connection 3½-inch A.P.I - I.F. 
    Goose Neck Access Hole Diameter 

    2-7/8-inch EU

    Saver Sub Make-Up Torque 8,000/10,000 ft-lbs 
    Bore thru (circulation passage) 2-inch  
    Elevator Bail Pipe Size 

    3½-inch and 4½-inch

    Gear Oil Capacity 4½ Gallons 
    High Pressure Hose Size 1¼-inch 
    Drain Hose Size 


    *Braking capacity (ft-lbs)  N/A14,000

    Power Unit and Controls

    Hydraulic Pump – Maximum Output and Pressure 89 GPM and 5,000 P.S.I. 
    Hydraulic Reservoir Capacity 35 Gallons


    Hydraulic Oil Type EP Grade  

    Caterpillar, Cummins, John Deere

    Standard Fuel Tank (Diesel Fuel)  

    65 Gallons


    Lifting Devices

    Non-upset bail; hook link adapters; hook bail


    Radius of Torque Rein with non-upset bail/hook bail:





    Size and Weight

    BPT Trailer 98-inches Wide x 238½-inches Long x 115½-inches High – 10,000 Lbs.

    90-inches Wide x 181½-inches Long x 94½-inches High – 9,500 Lbs.

    GNT Trailer96-inches Wide x 280½-inches Long x 114½-inches High – 10,000 Lbs.