Polygon Composites Technology is a world leader in non-metallic journal bushings for the heavy equipment industry and is proud to have the original patents for filament wound composite bushings, which were issued in 1964.
The company’s bushing is used in a variety of oscillating applications ranging from agriculture to material handling and heavy construction equipment. Polygon fabricates bushings for unique customer equipment applications and is an engineered solutions partner to the largest equipment manufacturers in the world. One of its most special bushings is the EWS (Extended Wear Surface), which was recently developed to solve some of its customers’ most challenging field conditions.
The EWS bearings were built for the toughest jobs, lasting three to four times longer in harsher conditions than Polygon’s popular MRP standard bearing. The inspiration for the EWS bearing was a high-frequency, low-oscillation angle agricultural application that built total sliding distances quickly and resulted in wear failures. To solve this problem, Polygon utilized tribology research to create a new composite bearing liner system, custom engineered to improve the performance of wear surfaces. The EWS bearing has the same specifications as the flagship MRP bearing line but with increased wear resistance and reliability in contaminated joint locations with small design envelopes. Seals and their machining cost can sometimes be eliminated thanks to the improved contaminated environment performance.
Construction and mining
When large construction machinery is taken off-line, entire projects can be paused, leading to costly delays. The PolyLube EWS bearing allows equipment to operate maintenance-free for longer periods. Beyond the normal demands for reliability and predictability, this can also reduce the number of scheduled maintenance visits and their attendant downtime. Extended wear can allow scheduled bearing replacement to be combined with other major component overhaul maintenance schedules on a single call.
Planting and harvesting seasons occur in narrow windows of time, requiring equipment to always be ready for use. The need for longer-lasting bearings becomes increasingly important with today’s larger equipment. Increased size brings more points of failure, and the equipment also moves through the fields more quickly as acres farmed per piece of equipment grows. EWS shows excellent wear properties in contaminated environments and can help move maintenance into the off-season, preserving uptime in critical seasons.