Power Sections
Rotor and Stator Cross Sections

Drilex Power Sections

  • 1-1/4"
  • 1-1/2"
  • 1-11/16"
  • 2-1/8"
  • 2-3/8"
  • 2-7/8"


    Revs / Gal

    Flow Rate

    No-load Speed

    Output Torque


    1.33 rpg

    70 - 210 gpm

    93 - 280 rpm

    1,900 ft-lbs


    5.00 rpg

    25 - 106 gpm

    125 - 530 rpm

    475 ft-lbs


    2.95 rpg

    70 - 210 gpm

    207 - 620 rpm

    1,035 ft-lbs


    4.00 rpg

    80 - 210 gpm

    320 - 840 rpm

    1,200 ft-lbs


    3.39 rpg

    50 - 125 gpm

    169 - 424 rpm

    850 ft-lbs


    3.92 rpg

    50 - 100 gpm

    195 - 486 rpm

    1,200 ft-lbs


    3.74 rpg

    50 - 168 gpm

    187 - 628 rpm

    1,350 ft-lbs


    5.75 rpg

    60 - 120 gpm

    345 - 690 rpm

    1,200 ft-lbs


    1.00 rpg

    60 - 120 gpm

    60 - 120 rpm

    1,250 ft-lbs


    3.46 rpg

    60 - 120 gpm

    207 - 415 rpm

    450 ft-lbs


    7.13 rpg

    50 - 120 gpm

    357 - 856 rpm

    500 ft-lbs


    3.46 rpg

    60 - 120 gpm

    207 - 415 rpm

    960 ft-lbs


    3.46 rpg

    60 - 120 gpm

    207 - 415 rpm

    960 ft-lbs


    2.00 rpg

    80 - 168 gpm

    160 - 336 rpm

    1,800 ft-lbs

    287DX SuperFlow

    1.12 rpg

    100 - 250 gpm

    112 - 280 rpm

    1,600 ft-lbs

    Don’t see what you need?  Custom configurations are available!

  • 3-1/8"
  • 3-3/8"
  • 3-1/2"
  • 3-3/4"
  • 4-3/4"
  • 6-1/4"
  • 6-1/2"
  • 6-3/4"
  • 8-0"
  • 9-5/8"

Drilex offers a full line of quality and reliable power section sizes.  The power section is the part of a downhole motor or other tool that converts hydraulic energy from the operating fluid into mechanical rotational energy.  The power section consist of two parts, the rotor and the stator.

The rotor is comprised of either a high carbon alloy or a stainless steel bar and is machined with a helical (multi-lobe) pattern.  The rotor can be coated to reduce wear and corrosion.

The stator is a length of tubular steel that is lined with an elastomer (rubber) compound.  The elastomer is formed with a helical (multi-lobe) pattern similar to that of the rotor.  The difference between the stator and the rotor is that the stator always has one more lobe  than the rotor.  For this reason, the ratio of rotor lobes (X) to the stator lobes (X+1) is designated as (X):(X+1).  For example: 3:4, 5:6, 7:8, and 9:10.  For more information about the Drilex rotors and stators, please click on the Features and Advantages tab.

The table above shows the available power sections, arranged by the outer diameter.  Just click on the model number to view the PDF specification sheet.  If you need further assistance or in need a power section that is not listed, please contact your nearest Drilex Representative or call our office directly.

Drilex SuperFlow

High Flow Rate Power Sections

Drilex is proud to introduce a line a of power sections capable of very high flow rates necessary for today’s thru-tubing operations.  Called the SuperFlow, these power sections are designed for applications where very high circulatory flow rates are needed to keep the tubing annulus clear of cuttings and debris.  Unlike existing power sections that would have to be ported, the SuperFlow is designed from the onset to handle high volumes of fluid without the need of a bypass nozzle.  Each SuperFlow is designed to work with traditional rock bits. High speed SuperFlows are also available for use with PDC or mill type bits.  Contact your nearest Drilex Representative to learn more.


Thru-Tubing Power Sections

Thru-Tubing Rotor

Drilex is pioneering the advancement in power section design, specifically for the thru-tubing and workover industry.  No manufacturer of positive displacement power sections can match Drilex in experience or commitment to small power section technology.  By specifying a Drilex power section in your thru-tubing or workover motor, you will receive more than the advantage of superior power;  you benefit from our years of experience and know-how.  Just as Drilex technology played a leading role in the advances of the past decade, our commitment to thru-tubing and workover applications will make possible new vistas of increased efficiency and performance in your  operations in the decades ahead and beyond.

Best Practices..Coil Tubing Applications
Best Practices for Downhole Motor Operations in Coiled Tubing Applications
Custom Designed Power Sections

Custom Power Sections

Drilex offers the ability to make custom power sections for special or unique applications.  Customized power sections are a hallmark of Drilex where customers have sought a better solution than settling for what is on the shelf.  Please contact a Drilex Representative to learn more about how a custom power section can be engineered for your application.


Extended Reach / String Agitation Tools

Needing a power section for your Extended Reach or String Agitation Tool?  Drilex can provide a power section that can operate at a specific frequency and flow rate to maximize the effect of your Extended Reach or String Agitation Tool.  Contact us to learn more about how we can help your downhole tool achieve optimum performance!

String Agitation

Horizontal Directional Drilling (HDD)

Specialized power sections is what Drilex is all about.  With its short overall length and high torque output, Drilex power sections are optimally suited for Horizontal Directional Drilling (HDD).  By increasing the number of rotor lobes to 9 and even 10 lobes, the Drilex power section can achieve higher performance in a more compact length than a traditional power section.  Contact a Drilex Representative or call us directly to learn more about how our short length power sections are an ideal choice for HDD applications.  

Horizontal Directional Drilling


Power Sections
Lower Ends
Sacrificial Motor
Fishing Motor
Wash Tool
Wash Nozzle

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16626 FM 2920 Rd.
Tomball, TX  77377
Main:  832-698-7700
TF:  1-888-489-0888

The intelligent use of power