The latest technological developments mean that crushing and D screening equipment produces more and requires less maintenance. Better wear materials in key areas, optimised design and long-life components are boosting performance, cutting downtime and reducing running costs. Further gains come from smart systems that can cope with tough operating conditions and on-line monitoring, which offers greater reliability. German firm Haver & Boecker is improving its line of NIAGARA screens by fitting an effective oil lubrication system for the bearings that is matched to the application. The firm's double shaft drive, free swinger drive and eccentric drive screens previously featured conventional grease lubricated bearings but the firm is now offering either recirculat-ing oil lubrication or oil level lubrication right across the NIAGARA range. The first machine in the line-up with oil lubrication was the Free-Line MD 1800 6000 unit introduced in early 2004 and the success of this model has prompted the firm to extend the feature throughout the range. The MD 1800 X 6000 has a pump to feed bearings with oil, which then flows back through a return pipe into the tank. The lubrication system is compact and consists of tank, pump, filter and a monitoring unit that checks pressures and temperatures constantly. A heater allows the screen to stop at low temperatures and start again without problems. The monitoring system detects operating problems, preventing costly repairs.
NSTL
