FAULHABER
A LOT OF POWER IN A VERY SMALL SPACE Drive Systems evolved. Generally speaking, electric motors are not "lone wolves" but for most applications need to be combined with gearheads for speed reduction as well as encoders. To ensure that the components are perfectly matched to each other and to minimise installation requirements, it is recommended to obtain the individual components as a complete solution from a single source.
The BXT motors deliver considerably higher torques than those usual in this drive class.
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ven in cases where installation space is extremely tight and where high-torque drives are required which, owing to the installation situation, need to be as short as possible, there is a practice-oriented solution that is especially suitable for applications in robotics, prosthetic joints, laboratory automation, pumps, medical technology or aircraft cabin equipment. The drive specialist FAULHABER has once again demonstrated its competence as a system provider and has extended its BXT flat motor series by adding corresponding gearheads and integrated encoders as well as speed controllers that are also exceptionally short in the axial direction. All components have been optimised to ensure that they function perfectly together. The three sizes can solve many different drive challenges. In the case of a lower-arm prosthesis, for example, the smallest drive with a diameter of 22 mm would be ideal for the hand and the 16 mm long motor for the elbow. Other possible applications for the small compact drive
01 - AUTOMATION Mag - JUNE 2020
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systems are robot grippers, industrial automation, humanoid robots and even bio-robotics for motorised – i.e. powerassisting – hand exoskeletons. Thanks to their precise speed control properties, they are also suitable for e.g. dialysis machines or medical pumps. Innovative winding technology for more torque The motors were developed based on the classic external rotor design. Thanks to innovative winding technology and optimised construction, the brushless DC-servomotors produce torques up to 134 mNm within a diameter of 22 mm, 32 mm and 42 mm and deliver a continuous output of up to 100 W with a high level of efficiency. This means the compact motors significantly exceed the standards usual in this drive class. Particularly the ratio of torque to installation space and weight is much better than what is common on the market. Thanks to the high copper filling factor and the design of the pole shoes, the magnetic field is strong and the cogging torque very small.
