Case: Poly-V pulley

We produce numerous pulleys in different sizes for different industries. The Poly-V pulley described in this case, is used for the automotive sector, specifically for truck engines.

How we manufacture the Poly-V pulley

The pulley is formed from sheet metal through a spinning process.

Read more about spinning here

The Poly-V spur in the pulley, is formed without any use op chip-consuming processes. This reduces the material consumption significantly, compared to e.g., forged or turned solutions.

Cold forming sheet metal through a spinning process, comes with many benefits.
Among others, items made from sheet metal preserves the strength in the raw material better, than casted items, as casted items are more porous in its structure, due to those gas bubbles that inevitably emerge in the material when melting it.

Pullies that operate in harsh environments, characterized by mechanical tension and temperature fluctuations, are subject to everyday wear and tear. Therefore, creating a product solution with long durability and higher strength, is particularly essential for pullies. 

Reduced material consumption and lower weight

As items made through cold manufacturing processes like spinning, preserves more material strength, the wall thickness on the items, can also be reduced, without compromising the functionality and durability of the item. Thinner wall thicknesses reduces the material consumption and the weight of the product. This results in a lower unit price, as well as a lower carbon footprint.

By reducing the weight of a pulley in a combustion engine, the inertia is reduced, as less material is to be rotated. Thereby the weight reduction leads to lower fuel consumption and a lower carbon footprint.