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MT-JC Series Drawworks: Heavy-Duty Hoisting System from China Suppliers - Reliable Factory for Drilling Rigs
Product Specifications
Conventional Double-shaft Drawworks
| Model | JC30B | JC40B | JC50B | JC50D | JC70B | JC70D |
| Max Input Power (kW) | 440 | 735 | 1100 | 1100 | 1470 | 1470 |
| Max Fast Line Tension (kN) | 210 | 280 | 350 | 350 | 487 | 487 |
| Dia. of Drilling Wire Rope (mm) | 29 | 32 | 35 | 35 | 38 | 38 |
| Drum Size (Dia. × Width) (mm) | 560×1304 | 640×1208 | 685×1160 | 770×1310 | 770×1310 | 770×1310 |
| Bailing Drum Size (Dia. × Width) (mm) | – | – | – | 400×1320 | – | 400×1460 |
| Bailing Drum Capacity (m) | – | – | – | 5000 | – | 7000 |
| Lifting Shift | 4F | 4F+2R | 4F(6F)+2R | 4F+4R | 4F(6F)+2R | 4F+4R |
| Cathead Shaft Speed Shift | 2 | 2 | – | 2 | – | 2 |
| Auxiliary Brake | FDWS40 | FDWS40 | FDWS50 | FDWS50 | FDWS70 | FDWS70 |
| Dimensions (L×W×H) (mm) | 6000×2850×2380 | 6300×2628×2699 | 6760×2565×2881 | 7190×4335×3216 | 7100×2920×2945 | 7370×4335×3216 |
| Weight (Kgs) | 27,300 | 28,000 | 34,203 | 49,600 | 46,050 | 55,809 |
Compact Single-shaft Drawworks
| Model | JC30DB | JC30DB | JC40DB | JC50DB | JC70DB |
| Max Input Power (kW) | 600 | 1100 | 800 | 1100 | 1470 |
| Max Fast Line Tension (kN) | 210 | 350 | 280 | 350 | 450 |
| Dia. of Drilling Wire Rope (mm) | 29 | 35 | 32 | 35 | 38 |
| Drum Size (Dia. × Width) (mm) | 500×1000 | 770×1310 | 644×1208 | 770×1310 | 770×1434 |
| Auxiliary Brake | Dynamic Braking | Dynamic Braking | Eddy Current Brake | Dynamic Braking | Dynamic Braking |
| Dimensions (L×W×H) (mm) | 4700×2800×2552 | 6530×3192×2680 | 7000×3695×3010 | 6530×3192×2680 | 7920×3050×2680 |
| Weight (Kgs) | 19,600 | 36,000 | 39,125 | 36,000 | 46,500 |
📄 Third-party witness and inspection reports available: Bureau Veritas (BV), CCS, ABS, SJS, etc.
Compliance and Reliability
Every unit is manufactured in line with international oilfield equipment standards (API 7K) and is subject to strict inspection procedures to guarantee safety and performance. The drum is precision-grooved to ensure smooth spooling of the drilling line, while the low speed and high speed ends of the shaft are equipped with ventilated pneumatic clutches for efficient torque transmission.
A water-cooled brake rim, treated with medium frequency induction hardening, offers extended durability and stable braking performance under continuous heavy-duty cycles. Transmission sprockets also undergo surface hardening to resist wear, further enhancing reliability during prolonged operation. These features enable the drawworks to meet the demanding requirements of deep drilling and high-load hoisting operations.
Product Features
- The drawworks incorporates forced lubrication for the chain drive and involute spline-type transmission clutches, reducing wear and extending service life under severe working conditions.
- Drilling contractors can configure the main brake system with either a band brake or a disc brake, depending on rig requirements.
- For enhanced safety in extended tripping or heavy-load lowering operations, auxiliary braking options include eddy current brakes or Eaton water-cooled dynamic brakes, providing smooth and controlled deceleration.
- These systems ensure reliable stopping power, reduced heat build-up, and safe operation even under extreme loads.
- With its combination of strong structural components, advanced braking systems, and high efficiency, the MTPM drawworks stands as a proven solution for drilling contractors seeking durability, adaptability, and operational safety.
⚠ Key Design Highlights: Alloy steel shafts | Water-cooled braking | Forced lubrication | Multiple brake options — designed for safe and efficient drilling rig hoisting operations.
Product Details
Frequently Asked Questions
What international standards do these drawworks comply with?
All drawworks units are manufactured in accordance with API 7K international oilfield equipment standards. Third-party inspection and witness reports are also available from recognized certification bodies including Bureau Veritas (BV), CCS, ABS, and SJS.
What is the difference between the Conventional Double-shaft and Compact Single-shaft drawworks?
The Conventional Double-shaft drawworks (JC30B–JC70D series) feature a traditional dual-shaft layout with bailing drum options and multiple lifting shifts, suited for heavy-duty and deep drilling rigs. The Compact Single-shaft drawworks (JC30DB–JC70DB series) offer a more space-efficient design with simplified configuration, ideal for applications where footprint and weight are critical considerations.
What auxiliary braking systems are available for these drawworks?
Auxiliary braking options include eddy current brakes and Eaton water-cooled dynamic brakes. These systems provide smooth, controlled deceleration, reduce heat build-up, and ensure safe operation during extended tripping or heavy-load lowering operations.
Can the main brake system be customized?
Yes. Drilling contractors can select either a band brake or a disc brake for the main brake system, depending on specific rig requirements and operational preferences.
What lubrication system is used in the drawworks?
The drawworks uses a forced lubrication system for the chain drive and involute spline-type transmission clutches. This design significantly reduces component wear and extends overall service life, even under severe and continuous working conditions.
What is the maximum input power available in the JC series drawworks?
The maximum input power across the JC series reaches up to 1,470 kW, available in models JC70B, JC70D, and JC70DB. These high-power models are designed for demanding deep drilling operations requiring maximum hoisting capacity and fast-line tension up to 487 kN.