Compact, high-speed brushless motor

Compact, high-speed brushless motor

March 19, 2019


Portescap is expanding its Ultra EC range of brushless, slotless DC motors with the introduction of the 35ECS motor. This 2-pole motor offers ultra-high speed and power (up to 330W, max. continuous) without compromising on smooth operation and long life.

The 35ECS motor is available in two lengths: the 35ECS60 and the 35ECS80. Both motors feature Ultra EC coil technology for high torque and power density with limited core losses throughout a range of working speeds without friction and brush wear. These motors feature a patented high-speed rotor design to sustain speeds up to 40,000rpm.

The 35ECS80 opens new areas for slim/long packages with impressive torque capabilities at very high speeds, while the 35ECS60 allows high-speed capabilities at very low voltages. Due to its rugged design, the 35ECS can sustain peak torque during 2s up to 1.1N-m (35ECS60) and 2.0N-m (35ECS80). 
35ECSs motors are a choice for applications such as battery-operated hand tools (industrial tightening devices or drills), factory automation equipment (large fans or vacuum pumps), and for applications where there are diameter constraints.

The 35ECS motors feature a laser welded front flange to ensure the housing can sustain high torque. A temperature probe on the coil head ensures optimized control of motor performance in heavy-duty applications. The motors are offered with Hall sensors and a total of 6 different coils to match speed and voltage requirements. Upon request, Portescap can also provide options for customization including gearboxes, encoders, coil variations, and mechanical interface modifications.

Motor Performances
Frame Size Torque R/K2**
Diameter(mm) Length(mm) mN-m 103/N-ms
35 60 120 0.900
35 80 193 0.370
**This motor constant gives Joule losses power Pj for a
given torque T; the lower the better: Pj=(R/K2) * T2