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MTDSF-50 Electromagnetic Eddy Current Brake for Land and Offshore Drilling Rigs Drawworks

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MTDSF-50 Electromagnetic Eddy Current Brake for Land and Offshore Drilling Rigs Drawworks

MTDSF 50 electromagnetic eddy current brake is a new type of auxiliary brake designed for both offshore and onshore drilling rigs. Based on the principle of electromagnetic induction, it provides wear-free braking with high torque output, long service life, and minimal maintenance requirements. By applying eddy current braking, the wear of brake blocks is significantly reduced, extending the service life of the brake drum and lowering driller workload. During tripping operations, the main brake is almost unnecessary, as braking torque can be precisely adjusted by regulating the excitation current to control drill string lowering speed. Even when the rotation speed drops to 50 rpm, the brake still delivers up to 75% of its maximum torque, ensuring reliable performance under heavy load conditions.

    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 and inspection report available

     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

    Eddy Current Brake view3
    Eddy Current Brake view1

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