Torque Limiting Magnetic Coupling

$10.00 | 1 table (Min.Order)

A magnetic coupling is a coupling that transfers torque from one shaft to another, but using a magnetic field rather than a physical mechanical connection. Magnetic shaft couplings are most often used for liquid pumps and propeller systems, since a static, physical barrier can be placed between the two shafts to separate the fluid from the motor operating in air. Magnetic shaft couplings preclude the use of shaft seals, which eventually wear out and fail from the sliding of two surfaces against each another. Magnetic couplings are also used for ease of maintenance on systems that typically require precision alignment, when physical shaft couplings are used, since they allow a greater off axis error between the motor and driven shaft.
Description

How does Torque Limiting Magnetic Coupling work?

A motor with an integral magnetic torque limiting coupling which maintains the relative positions of the motor rotor and a coupling output shaft thereof when the rotor is rotated, and transmits up to a predetermined amount of torque during such rotation, which exceeds the maximum sustained torque which the motor develops during normal operation so as not to interfere with the torque transmission during normal operation of the motor while allowing the output shaft and rotor to slip relative to one another to prevent transmitting a torque above a maximum safe torque which may be safely applied to a gear train to be driven by the motor, thereby preventing damage to the gear train by the motor in the event of a sudden change of speed of the gear train. The rotor of the motor is rotatably supported by bearings in the motor on journal extensions located beyond the ends of the rotor, so as to enable the magnetic coupling to have a length comparable to that of the rotor, in order to readily attain the necessary magnetic strength of the coupling.


Charateristics

• Eliminate rotating seals

• No wearing parts

• Synchronous design, No slip at any speed

• No physical contact between driving and friven parts

• Maintenance-free

• Safe for use up to 140, High-temp. designs available

• Custom designs available



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