NOV E-3000 Drawworks Output Shaft – Spec Sheet

1. Identification 

• OEM: National Oilwell Varco (NOV)
• Equipment: E-3000 Drawworks
• Component: Output Shaft
• Part Number: H46-AZ1
• Description: Shaft, Output for E-3000 Drawworks
• Equipment Class: Major Rig Equipment – Drawworks

2. Function

• Transfers torque from gearbox → drawworks drum
• Carries:
  • Full hoisting torque
  • Dynamic braking loads
  • Shock loads during tripping / slips set
• Acts as the primary rotating load path in drawworks drive

3. Mechanical Duty

• Load Type:
  • Torsion (primary)
  • Bending (from drum overhang)
  • Cyclic fatigue loading
• Service Type: Heavy-duty continuous + intermittent shock loading