Product Description:

Bosch Rexroth Indramat manufactures the MLP040B-0150-FS-N0CN-NNNN, a primary section in the MLP Synchronous Linear Motors series. The unit is built in size 040 with the B length code and is used on machine axes that need direct linear thrust without mechanical transmissions. When energized by a matched drive, it travels along an iron track to position tooling, pick-and-place arms, or gantry carriages in industrial automation cells. This direct-drive arrangement reduces compliance in the motion path and avoids the backlash associated with screw or belt systems.

At the rated operating point, the unit delivers a continuous nominal thrust of 370 N while drawing a rated phase current of 3.9 A. Liquid cooling removes up to 550 W of copper losses, and the coolant flow is 0.8 L/min through the integral channels. The electromagnetic design includes a force constant of 94.40 N/A and a back-EMF coefficient of 54.4 Vs/m, which support proper inverter matching. Winding code 0150 gives the coil an inductance of 78.8 mH and a resistance of 12.8 Ω for stable current regulation. Conductors exit at the front face to simplify cable routing, and the coils use the standard encapsulation method to stiffen the assembly. The unit is supplied without an encoder, so position feedback must come from an external device, and the nominal travel speed under continuous load is 300 m/min. This arrangement separates the motor section from the measuring system and is useful on long linear axes.

During short moves, the primary section can generate up to 1150 N of thrust by accepting a peak phase current of 18.7 A. Machine frames must also withstand the static attractive force of 1700 N acting between the primary and secondary parts. Under peak load, linear speed is limited to 150 m/min to manage back EMF and thermal rise. The unit weighs 6.1 kg, so moving mass remains moderate on high-dynamics axes. A thermal time constant of 2.4 min shows that winding temperature changes quickly with duty-cycle shifts, so the coolant loop must maintain steady flow during operation. Peak-force operation is therefore suited to brief acceleration demands or temporary load disturbances rather than extended steady-state travel.