Product Description:

Bosch Rexroth Indramat builds the MLP300C-0120-FS-N0CN-NNNN, a primary section from the MLP Synchronous Linear Motors series. This linear motor creates thrust directly along a machine axis, eliminating ballscrews or gearboxes in high-speed transfer stations, gantries, and machining centers. The stator section houses three-phase windings and an internal coolant channel, and when paired with a magnet track, it converts drive current into controlled linear force for precise positioning tasks in automation lines.

The unit delivers a continuous thrust of 6720 N, allowing axis motion without thermal derating during normal duty. Force is produced in proportion to current, and the force constant of 148.90 N/A links controller output to mechanical thrust for tuning. At peak output, the axis can reach 120 m/min when the inverter supplies up to 300.0 A effective phase current. Heat from copper losses is removed through liquid passages, and the thermal time constant of 2.4 min shows that winding temperature rises gradually under load. The linear stator also develops 30700 N of attractive force toward the magnet rail, so the machine frame must withstand that preload. A rated current of 45.2 A supports a nominal velocity of 180 m/min, and the 37.5 mm pole width sets the commutation spacing. The windings have an inductance of 4.9 mH, which helps reduce ripple, and standard encapsulation protects against vibration and moisture.

The coolant circuit accepts a maximum inlet pressure of 10.0 bar and needs only 4.6 l/min to keep the winding temperature within class limits, with a pressure drop of 2.8 bar across the channel. Electrical leads exit at the front of the housing to support compact cable tray layouts, and no encoder is installed, so an external position sensor is required. The voltage constant of 85.9 Vs/m is used for back-EMF calculations at high speed, while the winding resistance of 1.02 Ohm contributes to I²R losses. Maximum transient thrust reaches 21500 N, and the attractive preload remains unchanged across the 300-series envelope.