Industrial automation suppliers have long hesitated to deploy coreless motors in continuous-duty applications due to concerns about heat accumulation in the ironless winding structure. However, a new generation of hollow cup motors specifically engineered for collaborative robots (cobots) and pick-and-place actuators has successfully overcome this limitation through multi-layered thermal mitigation strategies. The result is a motor family that delivers the responsiveness of coreless technology with the thermal stability required for factory floor reliability.
The newly released product line incorporates three key innovations. First, a rhombus-wound copper coil with increased copper fill factor—up to 68%—reduces resistive losses (I²R heating) by approximately 15% compared to conventional winding patterns. Second, a thermally conductive ceramic-filled epoxy potting compound directly bonds the winding to an aluminum-alloy housing, creating a direct heat extraction path with thermal resistance as low as 2.5°C/W. Third, integrated PTC thermistors provide real-time winding temperature feedback to the servo drive, enabling predictive current limiting and thermal protection.
Independent lab testing under simulated factory conditions (ambient 45°C, continuous 70% rated torque) shows surface temperatures stabilizing at just 78°C after two hours of operation—a 40% reduction compared to earlier generation coreless units. This thermal stability unlocks new automation scenarios: high-duty-cycle screwdriving heads operating at 60 cycles per minute, continuous-rotation indexing tables for assembly lines, and dexterous cobot grippers that maintain grasp force precision across multi-shift operations.
Early adopters in electronics assembly report three measurable benefits after replacing iron-core stepper motors with these enhanced coreless motors. First, audible cogging noise is completely eliminated, improving operator comfort in open work environments. Second, energy consumption per pick-and-place operation drops by 45%, contributing to LEED certification and carbon reduction targets. Third, end-effector weight is reduced by approximately 30 grams per axis, allowing cobots to handle higher payloads or operate at faster speeds without exceeding joint torque limits.
The series offers IP54 sealing as standard, with IP65 available for wash-down environments in food and beverage automation. Bearing life is rated at 5,000 hours minimum for the standard version, with high-reliability ball bearing upgrades extending service intervals to 10,000 hours. The motors are compatible with standard 24V and 48V servo drive architectures, and optional integrated encoders (up to 1,024 PPR) provide closed-loop position feedback for precision indexing applications.
Availability is announced for Q3 2026, with sample kits including matched gearheads (planetary ratios from 3:1 to 100:1) and encoders offered for pilot testing. Volume pricing is expected to be competitive with premium iron-core brushed DC motors, making the transition to coreless technology economically viable for mid-volume OEM applications.
Post time: Jun-05-2026