EAM is known for innovative magnet designs – here is another great example:
The Challenge: Produce an inner and outer ring assembly for use in an auxiliary HVAC power unit for trucks. The power unit incorporates a J1939 bus and new operating modes aimed at saving battery power and fuel. An integrated pump circulates heated coolant to warm the engine block, making starting easier and reducing start-up engine wear.
The unit can also direct heat to the truck cab for driver comfort while reducing fuel costs and emissions from unnecessary engine idling. The previous design was not completely sealed and was susceptible to corrosion.
The Solution: Create a sealed, contact free inner/outer ring assembly using high temperature neodymium magnets over-molded with glass filled PPS. The inner and outer ring operate a sealed rotary pump on the compressor. The outer ring of 6 magnets drives the inner ring – also designed with 6 magnets – without contact! This eliminates any potential corrosion issues and other sources of potential failure in the system.
EAM has more than 30 years of experience designing and producing custom magnetic components and assemblies, and we are IATF 16949 certified. We look forward to hearing from you about your specific magnet related needs!