maxon motor frameless DC motor and encoder

maxon motor’s frameless DC motor and encoder set is designed to allow for miniaturisation and integration. The motors meet the increasing need for smaller robotic actuation by assembling individual parts directly into the robotic joint.

The frameless brushless DC motor (BLDC) has a diameter of 45 mm and an assembled depth of 23.7 mm. It has a continuous rating of 50 W; 70 and 130 W versions are also available. The frameless design is particularly suitable for processing machine or rotary stage manufacturers who need a large through bore to pass cabling or tubing.

For positioning, a high-resolution magnetic encoder ring with the same bore as the motor rotor is supplied. The encoder ring is marked with the zero position to allow alignment with the motor zero commutation point in the application and is available in IP-rated, absolute and incremental options.

The combination gives a low-profile, large-bore positioning system made up from standard parts with shorter lead times than specialty manufactured complete assemblies, according to the company. It is suitable for space saving in applications already containing joint actuation bearings or mounting systems, as there is no need for a second set within the motor.