West Salem Machinery’s (WSM) pre-screening technology can reduce energy and maintenance costs on grinding systems by 50 percent or more.

A screen, installed before the grinder, removes acceptably sized material and any metal contamination prior to grinding. This decreases maintenance and power costs, and potentially reduces the size of the grinder. High volume disc screens or vibrating screens are commonly used in this capacity. 

Typical applications include pre-screening of sawdust, shavings and fine wood from biomass fuel or pre-screening of mulch prior to entering the finish grinding system.

Screens are available with screening surfaces up to six feet wide and have a capacity of 5-500 tons per hour. WSM also offers custom portable units that operate on low 5-25 horsepower and provide dramatic reductions to grinding costs.