In both rotary or linear motor designs, heat dissipation limits performance. But cooling linear motors is much more challenging without the large surface area, and finned cylindrical metal housing of rotary designs.
Trilogy's linear motors use a combination of very high motor efficiency; heavy duty, high temperature magnet wire; and good thermal conduction from the winding to the aluminum attachment bar to reject heat.
During fabrication, the windings are formed into a planar surface to maximize heat transfer between the winding and the aluminum attachment bar. Once heat is transferred internally from the windings to the motor's coil attachment bar, it is rejected through (typically) a carriage assembly.
Jack Marsh, Trilogy Linear Motors, (P) 141 W. Bay Area Blvd., Webster, TX 77598; (281) 338-2739.