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MT-JC Series Drawworks for Drilling Rig - Heavy-Duty Hoisting System by China Suppliers and Factory
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 Shift Speed | 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 your JC 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 and witness reports are available from recognized 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 to JC70D) features a traditional dual-shaft layout with multiple lifting shifts and optional bailing drums, suited for larger rig configurations. The Compact Single-shaft drawworks (JC30DB to JC70DB) offers a more space-efficient design with a simplified drivetrain, ideal for applications where footprint and weight are critical considerations.
What auxiliary braking systems are available for the JC drawworks?
Depending on the model, auxiliary braking options include FDWS-series water-cooled Eaton dynamic brakes (for conventional double-shaft models), eddy current brakes, and dynamic braking systems (for single-shaft models). These systems provide smooth, controlled deceleration and reduce heat build-up during extended tripping or heavy-load lowering operations.
How does the drum design contribute to operational reliability?
The drum is precision-grooved to ensure smooth and even spooling of the drilling line, minimizing rope wear and preventing uneven loading. The brake rim is water-cooled and treated with medium frequency induction hardening, providing extended service life and consistent braking performance under continuous heavy-duty drilling cycles.
Can the main brake system be customized based on rig requirements?
Yes. Drilling contractors can configure the main brake system with either a band brake or a disc brake depending on specific rig requirements and operational conditions. This flexibility allows the drawworks to be adapted to a wide range of drilling environments and safety requirements.
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 pressurized lubrication approach reduces friction and wear under severe working conditions, significantly extending the service life of critical drivetrain components.