Screw Washers are available in two basic designs for differing functions: Coarse Material Screw Washers and Fine Material Screw Washers.
Coarse Material Screw Washers are widely used for scrubbing gravel, stone and hard ores being nominally larger than 5mm or 4 mesh that have water soluble mud or clay contaminates that cannot be removed by a wet washing vibrating screen alone.
Fine Material Screw Washers are widely used for washing, dewatering and classifying solids nominally being as large as 10mm or 3/8”and smaller.
- Low-cost and lowest kW (HP) power choice washing over many other options
- McLanahan Twin-Seal Pak submerged rear bearing assembly incorporates Caterpillar Duo-Cone® seals that keep water and even the smallest particles from reaching the bearing
- Shafts flanged at each end to facilitate maintenance are straightened to ensure maximum wear life
- High brinnell, abrasion-resistant white iron wear shoes and or paddles that provide long wear life
- Extended length wear shoes to protect more of the spiral flights near to the pipe shaft
- Multiple rising current water injection points for better fines removal
- Off-the-shelf reducers for quick local procurement or factory support if necessary
- Large pool area for fine solids retention on Fine Material Screw Washers
- Longer screw shafts for better dewatering
- Quick and easy weir adjustment
