Finally, we also control the quality of each component and each step in the manufacturing process. A devoted team of customers, engineers, quality inspectors and machine operators works day and night to make sure each component satisfies the stringent irrigation gearbox Valley quality requirements. Because our suppliers are positioned in the United States, we can easily perform random inspections of their facilities to ensure they are conference our quality criteria. All major elements are also machined by Valley, providing a second level of quality control. A final inspection is conducted by testing each gearbox before it is shipped. And, to further make sure Valley quality, randomly selected gearboxes are life-tested in our gearbox testing laboratory.
But, even the very best gear style and components won’t help if the gearbox isn’t sealed from the elements. That’s why Valley runs on the patented six-barrier input and nine-barrier result seal to keep oil in and complications out. To compensate because of this longer shaft, special tires are used that actually move the center of the tire closer to the gearbox output bearing than the industry standard, reducing the load on the gearbox.
Valley also uses U.S.-made, case-hardened bearings made from ultra-pure steel instead of through-hardened Chinese bearings utilized by others. Case-hardening provides excellent wear characteristics while maintaining the internal toughness of the core material. Consequently, Valley bearings have a 40 percent better load rating.
The Valley gearbox also offers a 52:1 gear ratio. This means the gearbox uses 4 percent less energy to move the machine through the field, but, moreover, the design includes a fully recessed tooth actions. With a completely recessed design, the gears maintain lubrication oil between the gears longer, reducing friction for improved load capability and longer life.