Many tend to focus on issues that cause breakdowns, rather than issues that cause wear and tear on a system. This is especially true of bearing systems. Bearing systems are largely ignored until issues become apparent in the form of grinding noises, systems locking up, and eventually the system itself shutting down. Most of the time, bearing systems are vital to the continued operation of the machine. The cost of a bearing failure that could have been prevented by careful bearing selection will always be greater than the cost of that selection in the first place. Bearing selection becomes extremely important for systems that put a machine under a great deal of stress, like agricultural and industrial equipment. A bearing failure in any of these systems often means a broken machine.
One example is link belt bearings. They have a design history spanning many decades in some of the roughest heavy industrial and agricultural applications. The original designs were by Link-Belt, and have since been produced under the Rexnord and Sealmaster brands. These bearings are built to rotate shafts in the harshest, dirtiest, and most unforgiving environments, whether that’s on a farm, in a factory, or on a conveyor system.
This style of bearing is designed for heavy-duty use and built to withstand the most severe conditions. Housing typically includes a generous grease capacity, more misalignment tolerance, and dirt- and moisture-excluding seals. For machinery that has to operate continuously in rough conditions, the strength and flexibility of the components generally means fewer breakdowns in the field.
Identifying a bad bearing isn’t hard. There are a number of signs you can look for. The most common symptom is a noise that changes with speed – bearings on the way out tend to grind, click, or whine. This noise is often a sign of an overheating bearing, so it’s worth checking a few other things too. Make sure the housing isn’t running hot or discoloured, and check the grease: if it looks dark or gritty, replace the bearing before it takes other components down with it, such as a seized drivetrain.
Getting the right bearing is one part of the job, but knowing the correct installation method is equally important. Before the housing is fastened to the shaft, the shaft needs to be properly aligned, and assemblies should be torqued to the specification listed by the bearing manufacturer. Too much or too little grease is also an issue – either extreme can cause a bearing to run too hot over time. The time invested in a proper installation is repaid many times over in reliable performance.
Equipment needs maintenance and checks on a regular basis, and this plays a crucial role in extending its working life. Catching issues early means simple tasks rather than major breakdowns. Bearings that aren’t greased and seals that are left to wear both shorten a machine’s lifespan. Keeping detailed logs of maintenance done, tedious as it may be, helps prevent major breakdowns – a lack of good records is often the reason a failure goes unnoticed until it’s too late.
It’s smarter to buy from a supplier who specialises in the range you’re sourcing rather than going for the cheapest generic option. Getting the seal size and mounting configuration right the first time avoids unplanned downtime and the expense of repeat orders. An experienced supplier will also help with cross-referencing older part numbers and identifying suitable modern equivalents.
While bearings may be the last thing on your mind when machinery is running smoothly, they’re the unsung heroes of motion. No matter what you’re maintaining – a small fleet, agricultural kit, or a production line – a well-supported bearing range, paired with good maintenance practices, will keep operational costs low and frustration to a minimum.