There are a number of key features of using the RENCOL® Tolerance Ring as a stator mount:
When used as a stator mount the tolerance ring provides an alternative solution to the costly and time intensive Heat Shrink and Adhesives, with the added benefit of reducing carbon emissions. The RENCOL® Tolerance Ring is an eco-friendly solution.
Our Thermoclad material 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 the thermal transfer capability of tolerance rings so they could be used more effectively with stator mounting applications, providing greater thermal transfer coupled with the standard tolerance ring benefits in this application. Find out more about our Thermoclad bi-metallic technology.
Using a tolerance ring brings many benefits as a stator mount solution. The benefits, detailed below, outline how we can solve a few of the challenges being faced today by automotive manufacturers and engineers.
The assembly process for a tolerance ring yields both process energy and time savings as it is completed at ambient temperature, requires no heating or cooling stages, and is then immediately ready for the next process step. In fact, a total of only 2 – 5 seconds is needed for the assembly of the tolerance ring.
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.
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.
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.
Electrification in the automotive industry is being driven by the desire for lightweight systems to reduce running costs and also the move towards EVs to reduce CO2 emissions. In both cases it is important to have an e-motor that is as efficient as possible, otherwise the motor will have to be larger and heavier than necessary to accommodate the power requirements.