Within a relatively short time, the load is accelerated to match the speed of the rotor, thereby engaging the armature and the output hub of the clutch. The armature is pulled against the rotor and a frictional force is generated at contact. The rotor portion of the clutch becomes magnetized and sets up a magnetic loop that attracts the armature. When the clutch is actuated, current flows through the electromagnet producing a magnetic field. Another disadvantage is higher initial cost. Consequently, the maximum operating temperature of the clutch is limited by the temperature rating of the insulation of the electromagnet. However, because the activation energy dissipates as heat in the electromagnetic actuator when the clutch is engaged, there is a risk of overheating. Single-face clutches make up approximately 90% of all electromagnetic clutch sales.Įlectromagnetic clutches are most suitable for remote operation since no mechanical linkages are required to control their engagement, providing fast, smooth operation. Since the clutches started becoming popular over 60 years ago, the variety of applications and clutch designs has increased dramatically, but the basic operation remains the same today. Over the years, EM became known as electromagnetic versus electro-mechanical, referring more about their actuation method versus physical operation. This is why they used to be referred to as electro-mechanical clutches. For more information on how ropes are tested or qualified as a fire rope, don’t hesitate to contact us.Electromagnetic clutches operate electrically but transmit torque mechanically.
It is a vital component of your firefighter rescue gear. Escape Systems Personal Escape | Firefighter Bailout Bags Your firefighter bailout system is sometimes your last defense against death or serious injury or being trapped in a burning structure.
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