Gear reducers could be complex machines that apply the science of gearing and mechanical benefit to run thousands of complex procedures in many different industries. Gearbox manufacturers have designed a variety of gearboxes in multitudes of different configurations and gear ratios. When failures happen it is critical to understand how to restoration the failed models and how to prevent future failures to keep production ready to go.
Three things that may cause premature failure are poor lubrication, misalignment and overloading. Failure modes can involve bearing failures or equipment failures, or both.
Lubrication is crucial for both bearing and equipment life. Important aspects of lubrication are the volume of lubricant that can be delivered to each equipment mesh and bearings, as well as the properties of the lubricant. The lubricant forms a thin film that stops metal-to-metal get in touch with between gears and between bearing elements. Modern industrial gears use an involute tooth form and tooth engagement, which is a combination of rolling and sliding. The oil film is a thin barrier between moving parts which allows the rotating force to turn the gears very easily without damage to the metal surfaces. Contamination in the lubricant can result in scuffing and far faster wear for both bearings and the gearing in a gearbox, so that it is imperative that maintenance mechanics check gearbox lubricant for contamination gear reducer box periodically, once for yr as a minimum. Each gearbox would have a recommended oil level in addition to a method to lubricate both the bearings and the gear set. With bath lubrication, all shifting components dip 
listed below the oil level. With splash lubrication, essential oil is certainly splashed around within the gearbox casing by fast moving parts, covering all shifting parts. With pressure lubrication, oil is usually pumped to each gear mesh and bearing through spray nozzles or essential oil passages from the gearbox oil sump or from and exterior reservoir.