SEW-EURODRIVE has expanded its DR2C.. synchronous motor platform with the introduction of the new DR2C..U series, extending IE5 ultra-premium efficiency technology into higher power ratings and reinforcing the company’s focus on compactness, energy efficiency and resource-conscious design. According to the company, the new motors broaden the available power range for the DR2C.. family from 11 kW up to 90 kW, with 14 frame sizes and three speed classes available.
The DR2C..U motors are designed as synchronous reluctance machines, generating torque exclusively through reluctance technology rather than internal permanent magnets. In practical terms, this means the rotor operates according to the principle of magnetic resistance, with a construction based on laminated stamped steel. By eliminating the need for rare-earth magnets, SEW-EURODRIVE positions the solution as both more resource-efficient and less exposed to the material constraints typically associated with permanent-magnet motor architectures. This makes the DR2C..U particularly relevant for industrial users seeking a balance of efficiency, robustness and cost-effectiveness.
From a drivetrain engineering perspective, one of the most significant aspects of the new range is the extension of IE5 efficiency into larger sizes. The DR2C.. platform already complies with the highest energy efficiency class for variable-speed drives under IEC 60034-30-2, and the new DR2C..U variants carry that performance profile into higher outputs. The motors are intended for inverter-only operation, a design choice that supports elevated dynamic response, strong thermal reserves and more accurate process control. SEW-EURODRIVE also states that the motors offer high speed accuracy even without an encoder, together with highly dynamic performance.
The synchronous topology also delivers a sustainability benefit at the operating level. Because there are no rotor losses of the type found in conventional induction machines, the system can achieve a marked reduction in energy dissipation. SEW-EURODRIVE estimates energy loss reductions of up to 50% compared with an IE3 direct-on-line motor, with direct implications for absorbed power and overall total cost of ownership. In sectors where drives operate continuously or under frequent load cycles, this reduction can translate into meaningful lifecycle savings as well as a lower environmental footprint.
Another important engineering characteristic of the DR2C.. series is its compact mechanical envelope. SEW-EURODRIVE emphasizes the reduced installation space and modular configuration of the platform, combined with direct mounting possibilities and integration with its gearbox system. This architecture gives machine builders greater freedom in drivetrain layout and supports a higher level of adaptation to specific machine designs. For OEMs, compactness is not just a packaging advantage: it can also reduce material usage, simplify integration and improve the overall efficiency of the machine architecture.
In terms of target applications, the DR2C..U range is particularly well aligned with materials handling, logistics and production automation. The company identifies uses such as belt conveyors, sorting belts, roller conveyors, transfer tables and palletizers, as well as production-line systems including skid conveyors, lifting/lowering units with encoder feedback, and high/low-speed positioning applications. These are duty profiles in which dynamic response, controllability, compactness and operating efficiency are all critical parameters.
Overall, with the DR2C..U series, SEW-EURODRIVE is strengthening the industrial case for synchronous reluctance technology in medium- to higher-power variable-speed applications. The combination of IE5 efficiency, magnet-free rotor design, compact form factor and broad application versatility reflects a clear market direction: high-performance electric drive systems are increasingly expected not only to optimize machine output, but also to support resource efficiency and long-term sustainability targets.
