- Drawworks Components In Accordance With API 7K
- Drum With Lebus Groove.
- Main Brake: Motor Dynamic Brake
- Auxiliary Brake: Hydraulic Disc
- Brake
- One or Two Speed Gear Reducer
- Structure
| Drawworks（AC） | JC40DB | JC50DB | JC70DB | JC90DB |
| Rated input power Kw (HP) | 720kw (1000hp) | 1100kw (1500hp) | 1470kw (2000hp) | 2210kw (3000hp) |
| Motor Qty. x power | 1x800kw | 2x600kw | 2x800kw | 3x800kw |
| Motor speed rpm | 600 | 661 | 741 | 1000 |
| Drum（Dia. x length）mm | 640×1139 | 685×1245 | 770×1439 | 914×1556 |