Constant Force Window Balance Springs manufactured with proven technology and experience while delivering more than 100,000,000 Window Springs.
Kern-Liebers offers more than 100 years of experience in the manufacture of springs. We offer a wide variety of standard end configurations and can customize springs to fit your specific requirements. All of our springs are produced from High Yield 301 Stainless Steel and are marked with the load on the spring surface.
Kern-Liebers balance shoes are designed using a high strength, high performance POM material. The break pads, which come in 7 sizes and colors are made with a glass filled nylon while a durable zinc diecast cam is included with the shoe.
Kern-Liebers unique coil housings with dust covers can be used as singles or stacked together with durable inter-locking tabs to create doubles and triples limiting the number of sku's needed.