english or spanish made in oklahoma

DR-1000 Specs (8.5x11)                  DR-1000 Specs (11x17)

Main Drum

  • Hardened overlaid demountable water circulated steel brake rims are 42in diameter x 12in wide. Drum shaft diameter is 8 1/2in 1 1/8in wire line size standard.

Draw Works Features

  • Twin Kobelt 5028 on a single 60x10 water circulated disc assist brake
  • 1 1/8in Lebus grooving on main drum
  • 230-H Wichita Clutch on main drum

Mast Model 120/425
(Double Tubing, Triple Rods)-(per API 4F

  • 4-leg fixed base
  • Clear height is 120ft below crown
  • Static hook load capacity on 10 lines 425,000lbs
  • 42in fast line sheave
  • 36in dead line sheave
  • 36in sheave cluster
  • All sheaves mounted on Timken double row bearings
  • Racking platform capacity is 12,000ft of 4 1/2in tubing
  • Hydraulic rams for raising and telescoping
  • Adjustable work platform
    • Mast lighting
    • Standpipes

Drive Train

  • Standard Twin Caterpillar C15 540hp (Cummins or Detroit Diesel optional)
  • Twin Allison M5610A 6-speed transmissions
  • Cotta Compund/Dropbox


  • Standard 7-axle carrier
  • (3) Front axles (rated at 25,000lbs each) have spring suspension
  • Rear axles (rated at 60,000lbs combined) have walking beam suspension
  • Third and fourth (non-driving) rear axles with air bag lift suspension rated at 20,000lbs
  • All axles monitored by a Bendix Anti-Lock Brake System

Controls and Hydraulic System

  • Controls for all leveling jacks, mast raising and scoping cylinder, engine, transmission, main drum clutch, winch, and road to winch shifting are located at lower operator’s station for easy rigup.
  • 50gpm hydraulic pump for all rig hydraulics and tong operation
  • Filters provided on suction and return lines
  • Standard (2) Braden PD12 Service Winch

Rig Options

  • Hydraulic oil cooler for continuous use and hot climate applications
  • Cold weather engine package with fuel, oil and coolant heaters
  • Ventilated engine/transmission enclosure with removable doors
  • Folding walkways on off-operator side
  • Rotary drive package


DR 1000
DR 725
SR 650
SR 550
SR 450
SR 350


P.O. BOX 142
Phone: (405) 433-9064
Fax: (405) 433-9134



COPYRIGHT © 2010. All Rights Reserved