Thermoclad has been designed to combine the benefits of tolerance rings whilst solving the problem of thermal transfer, a particularly important factor for electric motors.
The technology addresses thermal transfer capability of tolerance rings so they could be used more effectively with stator mounting applications. Find out more about our Thermoclad bi-metallic technology.
Using a tolerance ring brings many benefits as stator mount solution. Each benefit, detailed below, solves the challenges being faced today by automotive manufacturers and engineers, here we detail how.
The dimensions between the stator and housing are able to vary, usually due to thermal expansion but also manufacturing tolerance stack-ups, whilst the waves apply a consistent retention force.
The RENCOL® product is assembled by applying an axial force with a press to insert the stator into the aluminium housing. Once assembled, no curing or settling time is required.
An example of the cost savings that can be achieved with RENCOL® Tolerance Rings as an electric motor stator mounting solution is outlined as follows.
Available methods and assembly steps to consider:
|Heat Shrink||Adhesive||Tolerance Ring|
|Cost per year||€3,035K||€3,115K||€2,400K|
|Savings by using a tolerance ring||€635K||€715K||-|
Even in just one year, significant savings can be gained by using a tolerance ring fixing instead of adhesive or heat shrink methods.
Saint-Gobain’s engineers use finite element analysis techniques to perform modal analysis of stator mount assemblies.
They can tune the dynamic stiffness of the RENCOL® products so they can isolate vibration or shift natural frequencies out of the operating ranges.
Experimental verification of the modal vibrations can be obtained through impact testing and the noise levels of the system can be analysed in our anechoic chamber by our noise and vibration experts.