Product Description:

The MLS140S-3V-0450-NNNN secondary section is manufactured by Bosch Rexroth Indramat for the MLS Synchronous Linear Motors series. It is a fixed track element that contains the steel laminations and magnetic poles that react with a traveling primary coil, converting electromagnetic forces directly into straight-line motion. Used in gantries, pick-and-place axes, and high-speed assembly machines, the segment provides the stationary part of a linear motor drive so that carriage movement can be produced without ball screws, gear racks, or belts.

The segment uses size code 140, which establishes the magnetic footprint for compatible primary modules and the allowable air gap. An overall width of 175 mm and an overall thickness of 15.4 mm keep the installation envelope slim enough for mounting alongside machine frames or aluminum profiles. The segment has an IP65 protection rating, so its enclosure resists dust ingress and water jets. The segment length is indexed as 0450, corresponding to a 450 mm increment that allows long tracks to be assembled from standardized pieces while maintaining consistent pole spacing. The 37.5 mm pole width maintains a consistent pole pitch, helping keep thrust ripple predictable when multiple segments are joined.

The secondary section has a maximum surface temperature of 70 °C; heat sinks or forced air should be added if continuous operation pushes the assembly toward that limit. The segment weighs 8.50 kg, which must be considered when designing vertical axes that require a counterbalance. Mechanical retention uses M6 screws inserted through clearance holes that conform to the low-profile DIN 7984 standard, allowing flush installation against base plates. When class 10.9 fasteners are selected, each screw supports a tightening torque of up to 15 Nm, providing secure clamping under rapid acceleration forces. Proper mounting maintains the required alignment between adjoining segments and helps preserve a uniform air gap along the travel path.