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Planetary Assembly

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Planetary Assembly
Benefit: Cost Saving, Increased Component Complexity
Main Forming Process: Conventional Processing
End Use Sector: Automotive
Material: Ferrous


This part is assembled in the transmissions of the Volkswagen Touareg and the Porsche Cayenne, where it supports the planetary gears used in the transfer case of 4WD vehicles. In any of the 6 holes, a shaft is fitted, where planetary gears are turning. The part only works when the short speeds are connected. In any other case, the part is turning free without any work. So the part is acting as a speed reduction of the transmission shaft.


PM offers the possibility to join parts during sintering. In this case, a sinter-brazing technique is used to join the front and the rear during sintering, so a joining step is saved. Given the complex shape of the part its compactness and dimensional accuracy, PM technology offers the customer many economic savings.

Component Specification

Weight (g): 557+500+58=1.115
Relative Density (%): Front: 6.85. Rear: 6.8. Bushing: 6.7
Tensile Strength (MPa): Front: 620. Rear: 600. Bushing RCS: 150
Yield Strength (MPa): Front: 350. Rear: 400.
Hardness (HV10): Front: 230. Rear: 250.

The information contained in these case studies is provided by third parties and although EPMA does its best to ensure the case studies are accurate it is not liable for any mistakes or wrong information

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