Components for the electrified drivetrain

Our sintered metal components for e-mobility

• Electric motors: Bearing bushes that reinforce bearing seats in lightweight-alloy housings, for a precise fit of ball/roller bearings and to compensate for thermal expansion. Coil formers for stators, manufactured using MIM, enable complex winding geometries with the highest dimensional accuracy. 
• Soft magnetic components (SMC): Rotors and stators made from soft magnetic sintered composite materials feature three-dimensional flux guidance, low remagnetization losses, and isotropic properties – ideal for high-pole-count, high-frequency machines such as axial flux motors.  
• Power electronics cooling – copper MIM for cold plates: Rising power densities in inverters and onboard chargers call for cooling solutions that push conventional manufacturing processes to their limits. Schunk Sinter Metals manufactures sealed liquid coolers (cold plates) with integrated pin-fin structures and complex internal channels using the copper MIM process – geometries that would be prohibitively expensive to machine from solid copper. The sintered copper MIM structure achieves near-full density and, with it, thermal conductivity that comes close to that of solid copper.  
• Coolant pumps: Sintered bearings and seals for electric coolant pumps – axial pressing for standard geometries, MIM for more complex internal geometries. Outstanding tribological properties in continuous operation, corrosion-resistant, dimensionally stable. 
• Actuators: Armatures, pole cores, and functional components for electromagnetic actuators. Simpler geometries produced economically with axial pressing, while complex internal geometries and undercuts are realized directly through the MIM process. 
• Gearbox and drive components: Gears, ring gears, and planet carriers and gears for electric axle drives. – manufactured using axial pressing or MIM depending on geometry and volume, with the highest gear quality and smooth running. 
• Position targets for synchronous and asynchronous machines: Modern machines need to be controlled to optimize performance, comfort, or efficiency. To this end, a variety of sensors precisely detect the rotational movement of shafts. The timing geometries involved are best produced using the sintering process. The combination of geometry and precision is the particular strength of sintering technology. 
• High-strength gears: Gears and sprockets manufactured by Schunk using powder metallurgy (PM) offer weight and cost advantages compared with conventional steel machining. The porous structure of PM components also offers the opportunity to use the noise-reducing properties of the base material to improve NVH behavior.