| Drum Diameter |
~36–38 inches |
| Drum Width |
~40–42 inches |
| Brake System |
Twin disc or band brake (often Hydromatic or Eaton Water Brake for auxiliary braking) |
| Clutch Type |
Fawick air clutches or similar |
| Main Gear Ratio |
Varies by configuration, typically around 6:1 to 8:1 |
| Horsepower |
Configured for around 1000–1600 HP input |
| Line Pull |
Often rated for 100,000–150,000 lbs single line pull |
| Wireline Capacity |
Typically for 1” or 1-1/8” drill line |
| Weight |
~50,000–60,000 lbs (varies with configuration) |
| Prime Mover |
Diesel engines or electric motors (DC or AC drives) |
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