Case Study: Windowlift Motor Saves Weight and Works More Efficiently
Windowlift motors are designed with several DuPont polymers: Zytel®, Rynite® , and Delrin® resins, and Vespel® Parts & Shapes.
Application Description
Windowlift motors, installed in 1996 Ford Taurus and Mercury Sable cars, are a designed with five DuPont polymers.
The motor gear housing, injection molded from Zytel® HTN high performance polyamide resin, marks a major shift away from traditional die-cast aluminum housings.
Materials Selected and Why
- Motor gear housing – Zytel® HTN high performance polyamide meets needs for retention of stiffness and strength at elevated temperatures, chemical resistance, low warpage and low shrinkage.
- Connector housing – Rynite® PET provides excellent drop impact resistance plus dimensional stability and good dielectric properties.
- Armature insulators – Zytel® nylon resin fulfills requirements for durability, electrical insulation and processability.
- Window lift gears – Delrin® acetal resin delivers the required combination of resistance to repeated impact, stiffness, moisture resistance and low coefficient of friction.
- Thrust plugs – Vespel® parts at each end of the armature give excellent low–wear performance without lubrication.
- Seals – Alcryn® melt–processible rubber was selected for its resistance to compression set and moisture.
