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The framework is made entirely from mig-welded heavy gauge (3/16" thick wall) steel tubing. Compare that to the 1/8" thick wall other manufacturers are calling "heavy duty". By using extra sturdy steel tubing, we were able to design our framework with less braces to trip over. The ends of our frame members are closed with welded-on steel end caps -not plastic inserts. Framework is finished with a durable baked-on polyester powder coated finish. This is the same finished applied to washer/dryer appliances. This high-gloss, scratch-resistant finish is easy to clean and maintains its new look for years. Weight stack plates are machined from unbreakable solid steel - not cast iron, which can break easily. Rotating assemblies such as Cams, R.O.M.s, and pulleys ride on maintenance-free ball bearings for quiet, friction-free operation. The drive medium for our wrist and cervical units is a a non-metallic capable of withstanding a 1200 pound test. Our heavier units employ the use of 3/16" aircraft quality steel cable capable of withstanding a 4000 pound test. This is combined with a cam and pulleys which ride on ball bearings able to take on many times their actual operating load. Steel, stainless steel, Delrin, and nylon components are machined to close tolerances and held together with with aircraft quality grade-8 fasteners. Pads are upholstered with double-stitched Naugahyde covering Ensolite PVC foam. Unlike polyurethane foam rubber used by other manufacturers, Ensolite is impervious to sweat and won't break down as quickly. Its no wonder Ensolite is used in commercial airliner cushions. Our units were designed and engineered to provide years of reliable service. Aside from periodic weight stack guide-rod lubrication, all of our units are virtually maintenance free. |
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