Coarse Materials Washers

GreyStone coarse material washers feature a unique adjustable screw shaft design, giving producers precise control over product specifications. The line consists of both single and twin screw models that process up to 2" feed material. A variety of screw diameter sizes, from 24" to 44", are available with production capacities up to 500 TPH.

Features & Benefits:

  • The shaft-mounted gear reduction is totally enclosed within an oil-bath gear box and provides easy service.
  • Motor and drive assembly parts required for routine maintenance are standard, off-the-shelf components for easy replacement.
  • The heavy stub is mirror-smooth, heat-treated shafting is fitted into a hard stainless steel spacing sleeve.
  • Adjustable screw shaft allows control the clearance between the belly pan and screw flights.
  • Ni-Hard Wear Shoes as standard.
  • For tougher washing requirements, more paddles can be added to the screw shaft.
  • Externally mounted pillow block bearings that are standard off-the-shelf components for easy replacement.
  • Strong and rigidly constructed to provide years of maintenance-free service.
  • Dirt and other extraneous matter is carried to the top and forced out with the overflow.
  • Heavy-duty skid frame allows movement through pulling into place instead of using a crane.

Specifications:

SINGLE SCREWS

Size Screw
Diameter
Tub
Length
Tons/hr RPM hp Max
Mat'l
Size
Water
Req.
G.P.M.
Empty
Est.
Weight
24"x18' 24" 18" 60-75 40 15 2" 300-400 7,500
30"x18' 30" 18" 100-125 35 20 2" 300-500 8,600
30"x24' 30" 24" 100-125 35 25 2" 250-500 10,550
36"x18' 36" 18" 150-175 30 25 2" 400-600 10,880
36"x28' 36" 28" 150-175 30 30 2" 400-600 13,830
44"x20' 44" 20" 200-250 26 30 2" 500-750 14,200
44"x32' 44" 32" 200-250 26 50 2" 500-750

18,300

TWIN SCREWS

Size Screw Diameter Tub Length Tons/hr RPM hp Max Mat'l Size Water Req. G.P.M. Empty Est. Weight
30"x18' 30" 18" 200-250 35 2-20 2" 500-700 13,080
30"x24' 30" 24" 200-250 35 2-25 2" 600-1000 18,900
36"x18' 36" 18" 250-300 30 2-25 2" 700-1200 16,000
36"x28' 36" 28" 250-300 30 2-30 2" 700-1200 21,900
44"x20' 44" 20" 450-500 26 2-30 2" 1000-1500 27,000
44"x32' 44" 32" 450-500 26 2-50 2" 1000-1500 35,000
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