Plastic. We are now in the plastic production and machining department. Many parts of our gasoline-driven machines are made of plastic - including motor housing, handle and many very small parts. We therefore produce about 75% of the required plastic components ourselves. That is the only way that our customers can be sure of receiving the quality they expect. In this process, we choose the appropriate material for each field of application, and therefore use about 50 different materials. Compared to magnesium, plastic parts have the advantage of being multi-functional without requiring additional machining; they are used in our machines for functions that do not require the strength of magnesium.

Why are housing and handle now made of plastic? Isn't metal stronger? We use a special material for these important parts. While being as sturdy as metal it is much lighter. Additionally, parts and functions can be integrated in the injection molding process with little or no cost. As you can see, in this
case plastic is superior to metal. Low-cost injection molding plants can be found anywhere. Don't they provide the desired quality? We prefer to rely on our own resources. Consequently, STIHL produces 75% of all its plastic components in-house. Our many decades of experience and the consequent use of automation ensures low-cost production and maximum quality. How do you maintain high strength when using plastic? Do you apply special methods? Yes, by selecting special material compositions, for example plastic reinforced with glass fibers, we utilize a material with the same stiffness but higher toughness. That is one way how we establish the necessary sturdiness for our requirements. Can I order housings or handles separately for my customers? STIHL supplies spare parts only as functional and ready-to-assemble components or modules. The reason for this policy is that only this way we can ensure optimal functionality.