Lyco Manufacturing takes reliability to the next level with its Sanitary Zero Maintenance Screen design, eliminating trunnion wheels and bearings. The maintenance-free design removes the need for routine lubrication of the bearings. Lyco is known for making the most robust rotary screens in the industry. The company provides a lifetime warranty on its cast stainless steel running rings. As with any machinery, chain and sprocket drive systems still require routine lubrication to ensure optimal performance.