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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 |
| 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 feature 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 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 and witness reports are available from recognized bodies including Bureau Veritas (BV), CCS, ABS, and SJS.
What is the difference between Conventional Double-shaft and Compact Single-shaft drawworks?
The Conventional Double-shaft drawworks (JC30B to JC70D) feature a traditional dual-shaft layout with cathead shaft, bailing drum options, and multiple lifting shifts, making them suitable for larger rigs. The Compact Single-shaft drawworks (JC30DB to JC70DB) offer a more streamlined design with a smaller footprint, ideal for space-constrained installations while still delivering high performance.
What auxiliary braking options are available for the drawworks?
Depending on the model and application requirements, auxiliary braking options include Eaton water-cooled dynamic brakes (FDWS series) for the conventional double-shaft models, as well as eddy current brakes and dynamic braking systems for the compact single-shaft series. These ensure smooth deceleration, reduced heat build-up, and safe operation under heavy loads.
Can the main brake system be customized for specific rig requirements?
Yes. Drilling contractors can configure the main brake system with either a band brake or a disc brake based on their rig specifications and operational needs. This flexibility ensures the drawworks can be adapted to a wide range of drilling environments and load conditions.
What lubrication system is used in the drawworks to extend service life?
The drawworks incorporates a forced lubrication system for the chain drive and involute spline-type transmission clutches. This pressurized lubrication method significantly reduces component wear and extends the overall service life of the unit, even under severe and continuous working conditions.
What is the maximum input power available across the JC drawworks range?
The JC drawworks range covers a wide power spectrum. The entry-level JC30B offers a maximum input power of 440 kW, while the top-tier models such as JC70B, JC70D, and JC70DB deliver up to 1,470 kW, accommodating the full spectrum of drilling rig power requirements from medium to ultra-deep well operations.