Bosch rexroth MCL, Project Planning Manual

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Fig. 1-1: Rexroth MCL example
1.4 Comparison ironless with ferreous linear motors
Ferreous linear motors use the iron, in which the winding is inserted to bundle
the magnetic flow. Therewith, a very high force density is reached. Act up to
a principle, very high magnetic attractive forces exist among the motor com‐
ponents (primary and secondary part). These lead to detent force and due to
saturation effecst to other parasitic effects, such as e.g. winding influences
for ripple of the operation force.
No attractive forces exist among primary and secondary part towards ferre‐
ous linear motors. Detent forces due to a slotting, existing for ferreous linear
motors are also not created. These aspects and the relatively small moved
mass of the primary part allow a vergy high dynamic with high precision at
the same time.
Additionally wearing mechanical components are not necessary due to direct
installation into the machine. Due to not existing mechanical elements, a
backlash free, with minimum or without hysteresis afflicted drive train, is
available.
MCL Ironless Linear Motors 3/197
Introduction to the product
R911330592_Edition 06 Bosch Rexroth AG