A key feature of the motors used in robotics is their high torque. This is the only way for arms and grippers to move with the required dynamism. Yet these motors also need to be lightweight and as compact as possible to ensure they can be optimally integrated into the structure of robotic joints. It's little wonder, then, that standard solutions are often simply inadequate. That's why Swiss drive specialist maxon motor has developed an alternative for the growing robotics market and is now offering its BLDC motors as frameless kits.

The rotors and stators for the frameless motor kits are supplied separately, without bearings or motor shafts. The components are not connected till the assembly stage, which gives customers the best of both worlds - high torque density and minimum volume. With external diameters of 43 to 90 millimeters, the brushless flat motors in the EC flat series are extremely compact. As they are designed as external rotor motors, they also offer plenty of space inside for cable glands. To ensure the motors are easy to control, maxon equips them with hall sensors. Whether or not a solution with frameless motor is suitable needs to be determined on a case-by-case basis. The specialists at maxon are thus on hand with their advice and expertise to help customers make the right decision.