Product Description:

The MLP070A-0220-FS-N0CN-NNNN is a primary section from the MLP Synchronous Linear Motors series manufactured by Bosch Rexroth Indramat. As a linear motor, it supplies direct thrust along a guideway so machines can move loads without gears, screws, or belts. This construction simplifies high-speed positioning stages and gantry axes where precise, repeatable linear force is required.

The unit delivers a continuous nominal force of 550 N and can reach a peak of 2000 N for short duty cycles. Each ampere of phase current produces 90.7 N/A, giving a straightforward relationship between drive current and generated thrust. With a voltage constant of 52.3 Vs/m, the back EMF at nominal velocity stays within typical inverter ranges, while the phase circuit presents an inductance of 26.9 mH and a resistance of 4.7 ohms at 20 °C, values that influence current ripple and steady-state losses. Rated current is 6.1 A, and the conductor path is routed through the front of the housing to support compact cabinet layouts. The mover’s pole width is 37.5 mm, its length code is A, and its size code is 070. A standard encapsulation method protects the windings, but no encoder is installed, so external feedback must be provided if closed-loop operation is required. Under rated conditions, the carriage can reach 360 m/min.

Liquid cooling removes 780 W of resistive heat, keeping the windings below thermal limits with only 1.1 l/min of coolant and a pressure drop of 0.2 bar. This thermal management supports rapid load changes because the winding thermal time constant is 2.4 min. An inherent attractive force of 2900 N must be countered by the guide system when the mover is at standstill. At full load, the drive may demand up to 40.5 A, and when operating at maximum force the velocity is limited to 220 m/min to prevent overheating and excessive cogging.