Product Description:

The MLP140C-0120-FT-N0CD-NNNN is a primary section in the MLP Synchronous Linear Motors series from Bosch Rexroth Indramat. Intended for automated transfer lines and gantry systems, this linear motor converts drive current directly into thrust along a magnetic track, eliminating ballscrews or belts. By energizing its windings against the secondary rail, it provides controlled bidirectional motion for applications that require accurate positioning, smooth travel, and high feed rates across long machine axes. Because thrust is generated without mechanical transmission components, the axis can avoid backlash and reduce wear points that would otherwise affect repeatability. This layout also supports rapid reversal on demanding production moves.

With a motor size of 140 and modules built on a 37.5 mm pole width, the section delivers a continuous force of 3150 N at a rated phase current of 20.7 A. Force production scales with a force constant of 152.60 N/A, while back EMF rises with a voltage constant of 88.1 Vs/m. The winding has a resistance of 2.55 ohms and an inductance of 13.0 mH, and these electrical characteristics contribute to 2000 W of heat that must be removed during operation. The drive can reach a nominal velocity of 190 m/min and develop up to 10,000 N of peak thrust, while the primary section exerts 14,400 N of attractive force toward the secondary track. The coil set uses thermo-encapsulation to seal the copper against coolant ingress and mechanical shock, and no encoder is installed, so position feedback must come from an external measuring system.

Heat is removed by liquid cooling through internal channels. A coolant flow of 2.9 L/min at a maximum inlet pressure of 10.0 bar stabilizes coil temperature, and the stator has a thermal time constant of 2.4 min during load changes. The segment has a mass of 38.9 kg, so it must be clamped rigidly to the machine frame to resist magnetic attraction during operation. The closed cooling circuit also helps keep thermal energy away from nearby machine parts and supports consistent force output during sustained motion.