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Electromagnetic clutches are designed to transmit and cut off power on the driven side with an electromagnetic force. They can disconnect and connect power without actually stopping the power and are the most common type of electromechanical clutches. Servo2Go is an electromagnetic clutch supplier offering EM clutches from Inertia Dynamics. Get in touch with us today if you have any questions.
Engagement: How it Works
In engagement, electromagnetic clutches operate via electric actuation and transmit torque mechanically. When the clutch is needed to actuate, a voltage/current is applied to the coil. The coil then becomes magnetized and produces magnetic lines of flux. This flux is transferred through the air gap between the field and the rotor, caused the rotor to become magnetized. This creates a magnetic loop which attracts the armature, pulling it against the rotor and causing a frictional force to be applied at contact. The load is then accelerated to match the speed of the rotor, engaging the armature and output hub of the clutch.
Disengagement: How it Works
When the current/voltage is removed, the armature is now free to turn with the shaft. In most designs, springs hold the armature away from the rotor when power is released, thus creating an air gap.
EM Clutch Applications
Electromagnetic (EM) clutches can be used in a number of different applications, such as:
Printing
Food Processing
Conveyors
Factory Automation
Medical Equipment
Copiers/Printers
Types of Electromagnetic Clutches
Multiple Disk Clutches: multiple disk clutches are used to deliver extremely high torque in relatively small spaces. They can be used dry or wet, making them perfectly suited for multiple speed gear boxes and machine tool applications.
Electromagnetic Tooth Clutches: electromagnetic tooth clutches provide the greatest amount of torque in the smallest overall size. Because torque is transmitted without any slippage, they are ideal for multi-stage machines where timing is critical. They should not, however, be used in high speed applications.
Electromagnetic Particle Clutches: electromagnetic particle clutches have a unique design to the wide operating torque range they provide. As with standard, single face clutches, torque to voltage is almost linear. These clutches can be controlled very accurately and are ideal for tension control applications, as well as high cycle applications.
Hysteresis-Powered Clutches: hysteresis-powered clutches over an extremely high torque range and can also be controlled remotely. They offer the widest available torque range of an electromagnetic product due to minimal drag torque. They are ideal for testing applications where varying torque is needed. Additionally, because all torque is transmitted magnetically, there is no contact, no wear to any of the torque transfer components, leading to a long lifespan.
Power-on Clutches:used to couple two parallel shafts. The armature hub assembly is mounted to the same shaft as the rotor assembly. The armature hub accommodates a pulley, gear, sprocket, etc., to transmit torque to the second shaft. The field assembly is mounted on the shaft and retained by a loose fitting pin or bracket through the anti-rotation tab.
Below you will find additional information regarding Inertia Dynamic electromagnetic clutches. Get a quote today!
SL/BSL series power-on clutches are used to couple two parallel shafts. The armature hub assembly is mounted to the same shaft as the rotor assembly. The armature hub accommodates a pulley, gear, sprocket, etc., to transmit torque to the second shaft. The field assembly is mounted on the shaft and retained by a loose fitting pin or bracket through the anti-rotation tab.
Inertia Dynamics features five sizes of ball bearing clutches. All sizes have ball bearing armature and field assemblies for heavy-duty applications, allowing higher shaft speeds and side loads to be achieved. All BSL clutches are shaft mounted for easy installation and operate in the same manner as our SL series clutches.
SO series power-on clutch couplings are used to couple two in-line shafts. The armature hub assembly is mounted to the load shaft and the rotor assembly is mounted on the input shaft. The field assembly is mounted on the input shaft and retained by a loose-fitting pin or bracket through the anti-rotation tab.
FL series power-on clutches are used to couple two parallel shafts. The armature hub assembly is mounted to the same shaft as the rotor assembly. The armature hub accommodates a pulley, gear, sprocket, etc., to transmit torque to the second shaft. The field assembly is mounted to a bulkhead that is perpendicular to the input shaft.
FO series power-on clutch couplings are used to couple two in-line shafts. The armature hub assembly is mounted to the load shaft and the rotor assembly is mounted on the input shaft. The field assembly is mounted to a bulkhead that is perpendicular to the shaft.