Product Description:

The MLP140B-0090-FT-N0CN-TQNN is a primary section from the MLP Synchronous Linear Motors series manufactured by Bosch Rexroth Indramat. As a liquid-cooled electromagnetic track, it produces linear thrust directly along its travel path, eliminating ball screws or belts and enabling precise positioning in automated pick-and-place stations, gantry axes, and high-speed machining tables. The 140 size code indicates the magnetic width, while the B length code identifies the active coil length that engages the ferromagnetic secondary rails during motion. Because force is generated directly along the axis, the motor supports smooth travel and responsive positioning without a rotary-to-linear transmission stage.

During continuous operation, the unit delivers 2415 N of thrust while drawing a rated current of 14.0 A. This force-to-current relationship comes from a force constant of 172.8 N/A, so every ampere supplied through the front-routed wiring produces proportional linear force. Electrical dynamics are shaped by a winding inductance of 23.1 mH; together with the winding resistance of 4.3 Ω, it influences current response and copper losses at the servo drive. Liquid cooling through internal channels removes heat, keeping temperature within limits while the coils dissipate 2512 W under nominal load. The thermo-encapsulation method protects the windings against coolant ingress and vibration, and the 37.5 mm pole width sets the repeating magnetic pitch that must align with the secondary track.

For short accelerations, the primary section can produce 7650 N of peak thrust, provided the drive can supply a maximum phase current of 79.3 A. At this operating point, the mover reaches a nominal velocity of 160 m/min, and the mechanical design supports 90 m/min at full force without saturating the magnetic circuit. Maintaining coolant flow at 3.6 l/min creates only 0.9 bar of pressure drop across the loop, so the motor’s thermal mass settles within 2.4 min. Even without an integrated encoder, a voltage constant of 99.7 Vs/m allows reliable back-EMF sensing for sensorless commutation strategies in systems that use drive-based position estimation.