User’s Manual for Advanced Axial Flux Synchronous Motors and Generators
www.emrax.com Version 4.5 / January 2017 29
- Resolver / encoder can be mounted on the tailored elongated shaft (adapter shaft), which is added to ESO. Resolver /
encoder is mounted after drive wheel (for pulley, chain etc.) at the end of adapter shaft by tailor made bracket, which
has to be provided by a customer.
- A special resolver / encoder with bigger internal diameter of the rotor can be mounted on the ESO. This special
sensor* has to be provided by a customer.
- Instead of resolver / encoder hall sensors can be used.
* Resolvers / encoders with bigger inner diameter of the rotor are bigger and a lot more expensive. These bigger
sensors also need more space for mounting.
If the motor power/torque transmission is from the front and back motor side, then the motor needs a flanged shaft
with 6 inner splines (FSI) from the front motor side and an extended motor shaft (ESO) from back motor side. These
shafts can be ordered from the EMRAX Company. If custom made shafts are needed, the customer can be provided
with them – in this case the extended motor shaft from back motor side must be send to the EMRAX Company before
the motor assembly (this shaft has to be made precisely for our motors according to drawings that are sent to the
customer). Before sending the shaft the customer must contact the EMRAX Company.
!Note: If the power/torque transmission is from front and back motor side ESO should be mounted during motor
assembly and FSI should be mounted afterwards on the front motor side.
Possibilities for mounting the sensors in case of ESO and FSI:
- Hall sensors should be used.
- Resolver / encoder is mounted at the end of tailored elongated shaft (adapter shaft) after the drive wheel (for pulley,
chain etc.) on the back or front motor side (on the FSO or ESO) by using a tailor made bracket. This adapter shaft and
bracket have to be provided by a customer.
- A special resolver / encoder with bigger internal diameter of the rotor can be mounted on the ESO. This special
sensor* has to be provided by a customer.
* Resolvers / encoders with bigger inner diameter of the rotor are bigger and a lot more expensive. These bigger
sensors also need more space for mounting.
Figure 17: EMRAX transmission shafts
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