M ining C r ushing T r ansfer P r ocessing NTN Mining Application 11 PLUMMER BLOCKS Features Application Example T runnion bearing of ball tube mill Suppor ting r oller of tube mill Tightening bolt The bolt protects the plummer block against loosening due to vibration and impact Oil drain plug For draining old lubricant Plummer block unit Designed for greater mechanical strength and manufactured under strict quality control program To suit the intended application it can be made of either spheroidal graphite cast iron ductile cast iron or cast steel Dowel ball The upper and lower housings can be assembled together at higher accuracy by balldowel system using steel ball Also the upper cover can be installed or removed easily Oil fill plug For relubrication Seal Excellent sealing performance Spherical roller bearing Selfaligning ball or spherical roller bearing is built into plummer block Mounting bolt holes Allow easy positioning and installation Adapter Simplifies installation of the bearing CA T NO 2500E