AC DRAWWORKS – AMERICAN BLOCK MODEL: DKS-2300B

Manufacturer: American Block Manufacturing Company
Model: DKS-2300B
Type: Electrically Driven Drawworks (A.C.)

General Overview

• Application: Hoisting system for rotary drilling rigs

• Drive Type: A.C. electric motor (variable frequency drive compatible)

• Drum Configuration: Grooved drum with Lebus-style or smooth design

• Service: Suitable for high-capacity land and offshore rigs

Mechanical Specifications

• Nominal Input Power: 2 × 1,500 HP A.C. motors (typical setup)

• Maximum Line Pull (First Layer): ~120,000 lbs (varies slightly based on line size and reeving)

• Drum Diameter: ~36–40 inches (standard configuration)

• Drum Width: ~60 inches (verify with drawing)

• Drum Capacity:

  • 1-1/8” wire rope: ~3,000+ ft

  • 1-1/4” wire rope: ~2,500 ft

• Gear Ratios: Multi-speed gearbox (manual or automatic shift)

• Main Brake:

  • Type: Disc or band brake

  • Actuation: Spring-set, hydraulic release

• Auxiliary Brake: Eddy current brake (e.g., Elmagco 783 or 783-2)

Electrical & Control

• Motor Type: A.C. squirrel cage induction motors

• Control System: VFD (Variable Frequency Drive) ready

• Braking Control: Electrically modulated braking for precision lowering

Structural & Additional Features

• Mounting: Skid-mounted or integrated with rig substructure

• Bearing Support: Heavy-duty roller bearings

• Lubrication: Forced lube system for gearbox

• Cooling System: Air-cooled or optional water-cooled (for motors/brakes)

• Clutches: Hydraulic or pneumatic, depending on model variant

• Line Spooler (Optional): Hydraulic or mechanical

Typical Dimensions & Weight

• Length: ~16–18 ft

• Width: ~7–9 ft

• Height: ~6–8 ft

• Weight (without motors): ~40,000–50,000 lbs