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LOADMASTER SPECIALIZES IN THE CUSTOM DESIGN OF NEW GENERATION
DRILLING STRUCTURES AND COVERS THE FULL RANGE OF RIG COMPONENTS.

• Rig Packages
  • Big Easy Drilling Rig
  • Trailerized Desert AC Rig
  • Helicopter Rig

• Rig Equipment
  • Rig Transportation System
  • Multi-Well Skidding System
  • Coiled Tubing Tower & Base
  • Rotary Tables
  • Mud Pumps
  • AC Drawworks
  • Rig Electrical Systems
  • Iron Roughneck

• Masts and Derricks
  • Offshore Masts
  • Offshore Derricks

AC Drawworks

LM400AC, LM550AC, LM770AC & LM1100AC

Loadmaster’s AC drawworks is specifically configured to meet the demands of a fast moving drilling rig for minimum weight, compact package, robust mechanical construction, and simplicity of maintenance and service. The design provides power in excess of hoisting requirements to provide full regenrative braking, thereby eliminating the complication of “auxiliary” or “service” brakes.

Features

• Single speed gearbox eliminates shifting, direct drive to drawworks drum shaft (no chains)
• Heavy duty design with AGMA class 9 gears for maximum life
• Pressurized lubrication system with backup gear pump ensures proper lubrication and cooling to all components at any drum speed
• Faulk style couplings with floating center shaft prevents alignment problems
• Computer automatically controls dynamic braking
• Air cooled disc brakes as backup to regenerative braking, more effective braking
• Failsafe disc brake control provides the safety during blackout or emergency
• Lighter weight and simplicity of design makes our drawworks almost maintenance free

Drawworks	LM550AC	LM770AC	LM400AC
Capacity	550,000	770,000	400,000
Drum Size	26.60"dia x 50"L	25-3/8"dia x 46-1/8"L	22-7/8"dia x 40-1/8"L
Wireline Size	1-1/4"	1-3/8"	1-1/8"
Input Power (AC Motors)	2 x 600KW	2 x 800KW	1 x 800KW
Braking Mode	(Main Brake: Regenerative Braking on all)
Auxiliary Brake	(Hydraulic Disc Brake on all - (air cooled, 4oo only) )
Lubrication System	(Forced Lubrication on all)
Gear Box Ratio	6.4 (single speed)	5.6 (single speed)	6.4 (single speed)

Loadmaster Universal Rigs, Inc. 6935 Brittmoore Road, Houston, Texas 77041 | +1 281.598.7240	Copyright ©2014
Loadmaster Universal Rigs, Inc. and Loadmaster Engineering, Inc. are separate corporations which manage and control their own affairs. Each of these companies has its own separate identity, but in advertising and in our brochures we may sometimes use the word "Loadmaster". The use of such term is for convenience only and is not intended as an accurate description of corporate relationships.