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MT-JC Series Drawworks - Heavy-Duty Hoisting System from China Suppliers and 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 |
| Speed of Cathead Shaft 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 report 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.
- The 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.
Our drawworks with alloy steel shafts, water-cooled braking, forced lubrication, and multiple brake options, designed for safe and efficient drilling rig hoisting operations.
Product Details
Frequently Asked Questions
What international standards do the JC series drawworks comply with?
All JC series drawworks are manufactured in accordance with API 7K international oilfield equipment standards and undergo strict inspection procedures. Third-party inspection reports from recognized bodies such as Bureau Veritas (BV), CCS, ABS, and SJS are available upon request.
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 configuration with higher load capacities and optional bailing drum setups, suited for deep drilling rigs. The Compact Single-shaft drawworks (JC30DB–JC70DB series) offer a more streamlined design with a smaller footprint, making them ideal for space-constrained installations while still delivering competitive power and tension ratings.
What auxiliary brake options are available for the drawworks?
Auxiliary braking options include eddy current brakes and Eaton water-cooled dynamic brakes. These systems provide smooth, controlled deceleration during extended tripping or heavy-load lowering operations, ensuring reduced heat build-up and safe performance under extreme loads.
Can the main brake system be customized to suit specific rig requirements?
Yes. Drilling contractors can configure the main brake system with either a band brake or a disc brake depending on the specific rig requirements and operational conditions, offering flexibility for a wide range of drilling applications.
What lubrication system is used in the JC drawworks?
The JC drawworks incorporates a forced lubrication system for the chain drive and involute spline-type transmission clutches. This design significantly reduces wear and extends the overall service life of the equipment, even under severe and continuous working conditions.
What is the maximum input power and fast line tension available in the JC series?
The JC series covers a wide performance range. The maximum input power reaches up to 1,470 kW (available on JC70B, JC70D, and JC70DB models), while the maximum fast line tension goes up to 487 kN on the JC70B and JC70D double-shaft models, making them suitable for demanding deep-well drilling operations.