Ironless Motor

The mid-range UM ironless motors stand out for their extremely high speed and exceptional thermal characteristics which are the result of our unique production techniques.  Being an ironless design the motor exhibits no cogging and has zero attraction force between the coil unit and the magnets. This makes the compact UM motors especially suited for applications in which highly accurate measuring is required.

Peak force: 100 – 400 N
Continuous force: 26 – 116 N
Coil Units:  UM3 – UM6 – UM9 – UM12
Magnet Yokes: UM90 – UM120 – UM150 – UM390

In contrast to iron core motors, these motors feature an ironless coil unit, so there is no attraction force or cogging between the coil unit and the magnet track. This is what gives ironless motors their light weight, superior precision, a linear force constant and extremely dynamic velocity, acceleration and deceleration. Continuous force ranges from 10N all the way up to 846N with peak force of up to 4200N.

Advantages of ironless motors

• With high acceleration and dynamics, the outstanding force-to-mass ratio of the ironless coils enables unmatched system dynamics.
• No cogging, extremely low force ripple, the motors have no cogging effects. Offering smooth motion and position accuracy in your application.
• Approved for CE and ROHS
• Low thermal resistance. This allows good heat transfer and achieves an extremely high continuous force for all motors when using a descent-size heatsink or active cooling.

Many industries benefit, such as semiconductors, display, inspection/ultra-precision stages, medical / life science/lab automation, and optics.