• S-85 Power Swivel

    The National Oilwell Varco Model S-85 Power Swivel is a hydraulic motor driven, pipe rotating machine.

    • The National Oilwell Varco® Model S-85 Power Swivel is a hydraulic motor driven, pipe rotating machine. This compact machine, weighing only 1,115 lbs., is rated to support tensile pipe loads of 85 tons at zero R.P.M. and 45 tons dynamic load at 100 R.P.M.  The S-85 Power Swivel incorporates a 2¼-inch bore gooseneck and washpipe assembly allowing circulation through the 2-inch I.D. stem while rotating or in a static condition.
    • The S-85 power swivel is rated at 3,950 ft lbs. maximum torque and 155 RPM maximum speed.
    • 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 shift gears or stop and restart the unit to increase or decrease speed or torque.
    • The S-85 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-85 Power Swivel is ideally suited to supply rotary power for internal and external cutting of casing, drillpipe 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-85 is lightweight 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-85 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 NOV® Power Swivels are two basic types — pedestal mounted remote air and pedestal mounted remote electric.
    • TRANSPORT OPTIONS:  NOV Power Swivel units may be mounted on a bumper pull trailer, gooseneck trailer, or skid at the purchaser's option.
    • POWER OPTIONS:  Purchaser's have the option to match the NOV Power Swivel units with either John Deere®, Cummins® or Caterpillar® Engines.


    S-85 Power Swivel Specifications

    Models No. S-85
    Assembly Part No. 84482/023
    Weight (lbs.) 1,115
    Maximum Torque (ft. lbs.) 3,950
    Maximum Torque (ft. lbs.) 155
    Nominal Load Rating (tons) 85
    100 RPM Load Rating (tons) 45
    Maximum Circulating Pressure 5,000 PSI
    Radius of Torque ReinRetracted43-7/8-inch
    Radius of Torque ReinExtended64-1/8-inch
    Goose Neck Connection 2½-inch - 8 Line Pipe Thread
    Standard Saver Sub Connection 

    2-7/8-inch A.P.I. I.F.

    Goose Neck Access Hole Diameter 

    2-inch NPT

    Saver Sub Make-Up Torque 5000/7000 ft-lbs
    Bore thru (circulation passage) 2-inch
    Elevator Bail Pipe Size 

    2-7/8-inch and 3½-inch

    Gear Oil Capacity 2 Gallons
    High Pressure Hose Size 1-inch
    Drain Hose Size 



    Power Unit and Controls

    Hydraulic Pump – Maximum Output and Pressure 43 GPM and 5000 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 adaptors; 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 104-1/8-inches High – 9,000 lbs.

    90-inches Wide x 181½-inches Long x 83½-inches High – 8,500 lbs.

    GNT Trailer96-inches Wide x 280½-inches Long x 103-inches High – 9,000 lbs.