The LMCF cog-free brushless linear motor from Baldor Electric Company is specifically designed for unlimited stroke (travel) servo applications, which require a seamless operation free from cogging. With its optimum performance, the LMCF linear motor is ideal for closed-loop servo systems.
Baldor’s LMCF linear motor is composed of a moving coil assembly and a U-shaped, multi-pole stationary magnet track. This magnet track contains alternating polarity rare earth magnets welded into a hard chrome plated, cold-rolled steel plate.
Aside from that, the modular track assemblies can be stacked end to end to attain the necessary length of stroke. However, end-users should precisely follow the installation instructions. For instance, the coil assembly should be guided by the customer-supplied bearings and should be centered within the U-shaped magnetic track.
For added force, individual coil assemblies can be mounted in groups as opposed to a single unit. Multiple coil assemblies that have overlapping trajectories but independent operation can also be mounted on one magnetic track.
Moreover, the LMCF’s moving primary is a three-phase iron-less core coil and its winding is covered by thermally conductive epoxy. The iron-free core eliminates the magnetic force between the magnet track and the coil assembly. Apart from that, power to the coil assembly is supplied via a shielded four-conductor high flex cable.
Furthermore, the conventional standard coil assembly is fitted with Hall sensors for crash recovery, trapezoidal commutation and sinewave commutation alignment. Bespoke designs without Hall sensors are also offered, with water cooling option for higher force and enhanced heat dissipation on some models.
Baldor Electric Company
www.baldormotion.com
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