User’s Manual for Advanced Axial Flux Synchronous Motors and Generators
www.emrax.com Version 4.5 / January 2017 28
Brackets for mounting EMRAX motors are X shape brackets or they can be custom made. The X shape bracket is available for any
motor size. It is made from stainless steel. Two X shape brackets can be connected together and used for mounting the EMRAX
TWIN.
Figure 16: X shape brackets for EMRAX motors
7. Power/torque transmission and shafts
Every EMRAX motor has a serially included standard shaft. In this case the power/torque must be transmitted by using flanged
shaft on the front motor side. All shafts for EMRAX motors are hollow. Therefore EMRAX motors have trough-shaft mounting
and stacking capability.
The motor power/torque transmission can be made from the front side and/or back side of the motor:
If the power/torque transmission is from front side of the motor, then the Flanged Shaft with Inner splines (FSI) is
needed. It can be ordered from the EMRAX Company or the customer provides it in case custom made splines are
needed (inner, outer etc.). The shaft is mounted on the front motor side on six screws (M6/M8/M10 – depends on the
motor size).
If the power/torque transmission is from back side of the motor the customer needs the Extended motor Shaft with
Outer splines (ESO). It can be ordered from the EMRAX Company. If the custom made shaft is needed, the customer can
provide it. In this case the extended motor shaft from back motor side must be sent to the EMRAX Company before the
motor assembly (this shaft has to be made precisely for EMRAX motors according to drawings, which are sent to
customer by email). Before sending the shaft the customer must contact the EMRAX Company.
!Note: If the extended shaft from back motor side is used the six screws (M6/M8/M10 – depending on the motor size)
must be screwed down into the rotor on the front side of the motor, because they carry the torque from the rotor disks
to the extended shaft. Screws must be screwed down in the rotor as it is described in Item 6.
!Note: If the power/torque transmission is from the back motor side ESO should be mounted in the motor during motor
assembly. Possibilities for mounting the sensors in case of ESO:
- Resolver / encoder should be mounted on the front motor side by a special bracket, which can be ordered at EMRAX
Company.
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