National Drawworks 2040-UDDEL

Nameplate Information

• Manufacturer: National Oilwell, Houston, Texas, USA

• Equipo: Drawworks

• Type: 2040 UDBEL

• Serial No.: H-3213

• Patents: Multiple U.S. patents listed (2488902, 2526856, 2636432, etc. – covering mechanical and braking designs)

Typical Specs for NOV 2040 UDBEL Drawworks

(values may vary slightly depending on configuration and auxiliary equipment)

• Rated Line Pull: ~750,000 to 1,000,000 lbs (depending on line string-up)

• Drilling Line Size: 1 3/8 in. to 1 5/8 in. (commonly 1.5 in.)

• Drum Diameter: ~40 in.

• Drum Length: ~72 in.

• Input Power: Large DC or AC traction motors, typically 1,500–2,000 HP per motor (two-motor setup common)

• Braking:

  • Primary: Electromagnetic Elmagco brake (air-cooled or water-cooled, depending on installation)

  • Auxiliary: Mechanical drum brake for static holding

• Gear Ratio: Approx. 12–15:1 (varies by model)

• Weight: Often exceeds 100,000 lbs fully assembled with brakes and motors

• API Spec: Built to API 7K standards for hoisting equipment