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MTDSF-50 Electromagnetic Eddy Current Brake for Drilling Rigs - China Suppliers & Factory
Product Specifications
| Product Name | Electromagnetic Eddy Current Brake, Eddy Current Brake (ECB), Electromagnetic Brake |
| Chinese Model | MTDSF-50 |
| Rated Braking Torque | 55,000 N·m |
| Applicable Drilling Depth (with 5″ Drill Pipe) | 5,000 m |
| Number of Coils | 4 |
| Rated Resistance per Coil | 6.54 Ω ±10% |
| Insulation Class | Class H |
| Coil Connection | Series-Parallel |
| Maximum Excitation Power | 15 kW |
| Maximum Excitation Current | 45 A |
| Cooling Airflow | 12,000 m³/h |
| Weight (including control system) | 7,280 kg |
| Overall Dimensions (mm) | 2598 × 1850 × 1613 |
| Third-Party Witness & Inspection Report | Bureau Veritas (BV), CCS, ABS, SJS etc. |
Product Features
The air-cooled electromagnetic eddy current brake, equipped with forced ventilation, retains the advantages of water-cooled designs, such as high braking torque and simple operation:
The cooling system is simplified, eliminating the need for large water tanks, pumps, and pipelines, while avoiding freezing problems in cold climates.
It prevents scaling and corrosion issues, ensuring that the air gap remains stable and braking torque remains reliable.
It avoids the risk of coil burnout caused by operator error in water-cooled systems (e.g., failing to start the water pump).
It eliminates failures caused by seal leakage, which can lead to coil damage and bearing breakdown in water-cooled brakes.
Continuous forced ventilation allows effective heat dissipation even after braking stops, unlike water-cooled brakes where cooling ceases once rotation ends, ensuring safer operation during drill-in.
Engineered for drilling rig safety systems, combining durability, safety, and compliance with API 7K, IEC, ISO 9001 and Chinese standards.
Product Details
Frequently Asked Questions
What is an electromagnetic eddy current brake and how does it work?
An electromagnetic eddy current brake (ECB) is a non-contact braking device that uses electromagnetic induction to generate braking torque. When electric current passes through the coils, a magnetic field is created that induces eddy currents in the rotating drum, producing a resistive force that slows rotation without mechanical friction.
What are the main advantages of air-cooled over water-cooled eddy current brakes?
Air-cooled eddy current brakes eliminate the need for water tanks, pumps, and piping, removing risks of freezing, scaling, corrosion, and seal leakage. Continuous forced-air ventilation also provides effective cooling even after the drum stops rotating, which water-cooled systems cannot achieve.
What drilling depth is the MTDSF-50 model suitable for?
The MTDSF-50 electromagnetic eddy current brake is designed for drilling rigs with an applicable drilling depth of up to 5,000 meters when used with 5-inch drill pipe, making it suitable for medium-to-deep well drilling operations.
What international certifications and standards does this eddy current brake comply with?
The MTDSF-50 is engineered in compliance with API 7K, IEC, and ISO 9001 standards, as well as relevant Chinese national standards. Third-party witness inspection reports are available from recognized bodies including Bureau Veritas (BV), CCS, ABS, and SJS.
What is the rated braking torque and maximum excitation power of the MTDSF-50?
The MTDSF-50 delivers a rated braking torque of 55,000 N·m. It operates with a maximum excitation power of 15 kW and a maximum excitation current of 45 A, providing powerful and controllable braking performance for heavy-duty drilling applications.
How is the coil system configured and what insulation class is used?
The MTDSF-50 features 4 coils connected in a series-parallel configuration, with each coil having a rated resistance of 6.54 Ω ±10%. The coils use Class H insulation, which offers high thermal resistance and long service life under demanding operating conditions.