Full definition
Drum covering of alumina ceramic tiles (Al₂O₃ 92-96% purity) embedded in a rubber backing layer, applied to drive and tail pulleys. Provides a higher coefficient of friction than plain rubber lagging (0.40-0.45 wet vs. 0.25-0.35), especially in the presence of water, slurry, or ice. Extends drum service life from 6-12 months (rubber lagging) to 2-5 years. Brands: Rema Tip Top (CeraCon), Flexco, Martin Engineering. Reference standard: CEMA B105.1.