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Model 450K T-3

Crane-Mounted Drill Attachment

General Specifications

Power Unit

  • Tier 3 Diesel Engine rated @ 300 hp @ 1800 rpm, 985 ft-lbs of torque @ 1050 rpm


  • Electronically-controlled, 4-speed Powershift Transmission with 16" Torque Converter

Right Angle Gearbox

  • Force-lubricated Hypoid Gearset

Rotary Table Final Drive

  • 6.63:1 ratio, Oil-bath Lubricated Spur Gear Drive

Controls & Instrumentation

  • Fully Electronic Controls with Digital Instrumentation


  • Main Frame & Sub-frame Assembly (standard): 39,750 lbs.
  • Crowd Assembly (optional): 6,500 lbs.

Crane-Attachment Options

  • 30,000 lb. Positive-grip Hydraulic Crowd System
  • Height & Reach Insert Segments for Adjustable Sub-structure
  • Calyx Basket Catch Arms

Kelly Bar Options

  • Single, Double, Triple and Quad configurations available
  • Minimum 7" square solid inner bar, maximum 18" square outer bar
  • Overall Length to customer specifications/requirements
  • Kelly Bar weight varies by bar design & size

Crane Requirements

  • 140-ton Minimum Capacity. Capacity will vary dependent on Kelly Bar type & size and applied working radius of Drill Attachment
*Specifications subject to change without notice.

Theoretical Performance of 450K T-3

Gear Rotary Torque (Stall) Rotary Speed
1st 510,000 ft-lbs 0-10 rpm
2nd 255,000 ft-lbs 0-24 rpm
3rd 145,500 ft-lbs 0-44 rpm
4th 83,000 ft-lbs 0-78 rpm