KWS Manufacturing

Screw Conveyor Bulk Material Table

Tables are in alphabetical order. Click below to navigate to different sections.
Table keys and explanations are located in the Bulk Material Characteristics Section.

Bulk MaterialMaximum Particle Size (in.)Bulk Density (lbs/ft³)%
Trough Loading
Material Factor (MF)Component
/Bearing Series
Abrasive- nessCorrosive- nessFlowabilitySpecial Notes
Acetylenogen (Calcium Carbide)+ 1/270-9030A2.0B4IIIIH
Adipic Acid-100M4530A0.5D3IIIIIH, M, V
Alfalfa Meal-1/814-2230A0.6B4IIIVO, Q, V
Alfalfa Pellets-1/241-43450.5B4IIII 
Alfalfa Seed-1/810-15450.4A1-A2-A3IIIH
Almonds-1/228-3030A0.9B4IIIIIK
Alum, fine-1/845-5030A0.6A1-A2-A3IIIIIM, •
Alum, lumpy+ 1/250-6030A1.4B1-B2IIII
Alumina-1/855-65151.8C4IIIIIIG, Q
Alumina, fine-100M35151.6C4IIIIIIG, Q
Alumina, sized or briquette-365152.0C4IIIIIII 
Aluminate Gel (Aluminate Hydroxide)-1/84530A1.7B4IIIIIV
Aluminum Chips, dry-1/27-1530A1.2B4IIIVH, N
Aluminum Chips, oily-1/27-1530A0.8B4IIIVN, Q, V
Aluminum Hydrate (Aluminum Hydroxide)-1/213-2030A1.4A1-A2-A3IIIIIH, V
Aluminum Oxide-100M60-120151.8C4IIIIIG, H
Aluminum Ore (Bauxite)-375-85151.8D4IIIIII 
Aluminum Silicate (Andalusite)-1/24930A0.8C1-C2IIIIIIIV
Aluminum Sulfate (Alum)-1/245-58451.0A1-A2-A3IIII 
Ammonium Chloride, Crystalline-100M45-5230A0.7C1-C2IIIIIVA, L
Ammonium Nitrate-1/845-6230A1.3C3IIIIIIH, M, •
Ammonium Sulfate-1/245-5830A1.0A1-A2-A3IIIIIIA, I, M, •
Antimony Powder-100M30A1.6B4IIIIIV, •
Apple Pomace, dry-1/21530A1.0B4IIIVQ, V
Arsenate of Lead (Lead Arsenate)-1/647230A1.4A1-A2-A3IIIIIG, L
Arsenic Oxide (Arsenolite)-100M100-12030AIIIIL, •
Arsenic, pulverized-100M30450.8B4IIIL, •
Asbestos Rock, ore-381151.2C4IIIIIIIL
Asbestos, shreddedFibers20-4030B1.0B4IIIIVL, P, Q
Ash, Black, ground-1/810530A2.0A1-A2-A3IIIII 
Ashes, Coal, dry-1/235-4530B3.0C4IIIIIVQ
Ashes, Coal, dry-335-4030B2.5C4IIIIIV 
Ashes, Coal, wet-1/245-5030B3.0D4IIIIIVP
Ashes, Coal, wet-345-5030B4.0D4IIIIIVP
Asphalt, crushed-1/24530A2.0A1-A2-A3IIIV 
Bulk MaterialMaximum Particle Size (in.)Bulk Density (lbs/ft³)%
Trough Loading
Material Factor (MF)Component
/Bearing Series
Abrasive- nessCorrosive- nessFlowabilitySpecial Notes
Bagasse, dryFibers7-1030A1.5B1-B2-B3IIIVL, N, P, Q
Bakelite-1/830-45451.4A1-A2-A3IIII 
Baking Powder-100M40-5530A0.6A2IIIII 
Baking Soda (Sodium Bicarbonate)-100M40-55450.6A2IIII 
Barite (Barium Sulfate)+1/2120-18030B2.6D4IIIIII 
Barite, powder-100M120-18030B2.0B4IIIIIG, P
Barium Carbonate-100M7230B1.6B4IIIVL
Bark, Wood+1/210-2030B2.0C4IIIIVN, Q
Barley, fine ground-1/824-3830B0.4A1-A2-A3IIIII 
Barley, malted-1/23130A0.4A1-A2-A3IIIII 
Barley, meal-1/22830A0.4A1-A2-A3IIIII 
Barley, whole-1/836-48450.5A1-A2-A3IIIIH
Basalt-1/880-105151.8C4IIIIII 
Bauxite, crushed-375-8530B2.5D4IIIIII 
Bauxite, dry, crushed-1/868151.8C4IIII 
Beans, Castor, meal-1/835-4030A0.8A1-A2-A3IIIIIO
Beans, Castor, whole, shelled-1/236450.5A1-A2-A3IIIO
Beans, Navy, dry-1/248450.5A1-A2-A3III 
Beans, Navy, steeped-1/260450.8A1-A2-A3IIII 
Beans, Soy-1/245-50450.5A2III 
Beet Pulp, dry11-16
Beet Pulp, wet25-45
Bentonite-100M50-60450.7B4IIIIG, P, Q
Bentonite, Crude-334-4030A1.2B2IIIVP
Benzene Hexachloride-100M5630A0.6A1-A2-A3IIIVL
Blood, dried-335-4530A2.0B4IIIVM
Blood, dried, ground-100M3030A1.0A1-A2IIIIIM
Bluestone (Copper Sulfate)-1/275-9530A1.0B1-B2-B3IIIIIII
Bone Ash (Tricalcium Phosphate)-100M40-5030A1.6A1-A2IIIV 
Boneblack-100M20-25451.5A1-A2IIIIQ
Bonechar-1/827-4030A1.6A1-A2IIIII 
Bonemeal-1/850-6030A1.7B4IIIII 
Bones, crushed-335-5030A2.0B4IIIV 
Bones, ground-1/85030A1.7B4IIIII 
Bones, wholeIrregular35-5030A3.0B4IIIVN
Borate of Lime-100M6030A0.6A1-A2-A3IIIII
Borax, lumps1 1/2 to 255-6030A1.8B4IIIII 
Borax, lumps2 to 360-7030A2.0B4IIIII 
Borax, fine-1/845-55450.7C4IIIII 
Borax, screenings-1/255-6030A1.5B4IIIII 
Boric Acid-1/855450.8C4IIIII 
Boron-100M75151.0B4IIIIIII 
Bran, Rice/Rye/Wheat-1/816-2030A0.5A1-A2-A3IIIIIH, Q
Braunite (Manganese Oxide)-100M12030B2.0B4IIIIII 
Bread Crumbs-1/820-2530A0.6A1-A2-A3IIIIIJ,K
Brewer’s Grain, spent, dry-1/214-3030A0.5A1-A2-A3IIIV 
Brewer’s Grain, spent, wet-1/255-6030A0.8D3IIIIV 
Brick, ground-1/8100-120152.2C4IIIIIII 
Bronze Chips-1/830-5030A2.0B4IIIV 
Buckwheat-1/837-42450.4A1-A2-A3IIIIH
Bulk MaterialMaximum Particle Size (in.)Bulk Density (lbs/ft³)%
Trough Loading
Material Factor (MF)Component
/Bearing Series
Abrasive- nessCorrosive- nessFlowabilitySpecial Notes
Calcine, Flour-100M75-8530A0.7A1-A2-A3IIIII 
Calcium Carbide-370-9030A2.0B4IIIIH
Calcium Lactate-326-2930A0.6B1-B2IIIIVK, L, P
Calcium Magnesium Carbonate+ 1/290-10030B2.0B4IIIII 
Calcium Phosphate-100M40-5030A1.6A1-A2-A3IIIV 
Carbon, Activated, dry, fine-1/88-2030A1.2B4IIIIK, •
Carbon Black, fine-100M4-730A0.4A2IIIIIP, Q, •
Carbon Black, pelleted-1/820-2545IIM, P, •
Carborundum*-3100153.0C4IIIIII 
Casein-1/83630A1.6B4IIIII 
Cashew Nuts-1/232-3730A0.7B4IIIV 
Cast Iron, chips-1/2130-20030A4.0B4IIIV 
Caustic Soda (Sodium Hydroxide)-1/88830A1.8D4IIIIIIIL, M
Caustic Soda, flakes (Sodium Hydroxide)-1/24730A1.5D4IIIIIVK, L, M, P
Celite (Diatomaceous Earth)-1/6411-1730B1.6C4IIIIIIG, P, Q, •
Cement, aerated (Portland)-100M60-7530B1.4B4IIIIG
Cement, clinker-375-9530B1.8D4IIIIII 
Cement, mortar-1/813330A3.0C4IIIIIK
Cement, Portland-100M9430B1.4B4IIIIIG
Cerrusite (Lead Carbonate)-1/64240-26030A1.0B4IIIIIG, L
Chalk, crushed-375-9530A1.9B4IIIIP
Chalk, ground-100M67-75451.4B4IIIIG, P, Q
Charcoal, ground-100M18-2830A1.2B4IIIVH
Charcoal, lumps-318-2830A1.4B4IIIVH, K
Chips, Pulpwood+1/212-2530A1.0B1IIIIIN, Q
Chocolate Cake, pressed-340-4530A1.5B2IIII 
Chrome Ore-3125-14030B2.5C4IIIIII 
Cinders, Blast Furnace-35730B1.9D4IIIIIII 
Cinders, Coal-34030B1.8D4IIIIIII 
Clay, brick, dry, fines-1/2100-12030B2.0C4IIIIII 
Clay, calcined-1/880-10030B2.4C4IIIIII 
Clay, ceramic, dry, fine-100M60-8030A1.5A1-A2-A3IIIIIJ
Clay, dry, lumpy-360-7530A1.8B4IIIII 
Clinker, Cement-375-9530B1.8D4IIIIII 
Clover Seed-1/845-48450.4A1-A2-A3IIIIH
Coal, Anthracite (Culm and River)-1/855-6130A1.0B1-B2IIIIII 
Coal, Anthracite, sized-1/249-61451.0B1-B2IIII 
Coal, Bituminous, mined-340-6030A0.9A1-A2IIIIIF, H, P, Q
Coal, Bituminous, mined, sized-345-5530A1.0A1-A2IIIIIH, K, N
Coal, Bituminous, mined, slack-1/243-5030A0.9B1-B2IIIIVH
Coal, Lignite-337-4530A1.0B4IIIIIIH
Cocoa, Beans-1/230-45450.5A1-A2IIIIK
Cocoa, Nibs-1/235450.5B4IIII 
Cocoa, Powdered-100M30-3530A0.9A2IIIVG, P, Q
CoconutShredded20-2230A1.5B2IIIV 
Coffee, ground, dry-1/642530A0.6A1-A2IIIIIJ
Coffee, ground, wet-1/6435-4530A0.6A1-A2IIIVP
Coffee, soluble-1/641930A0.4A2IIIIIG,J,K,M,Q
Coffee, chaff-1/820451.0A1-A2IIIIG, Q
Coffee Beans, green-1/225-32450.5A1-A2IIIIJ, K
Coffee Beans, roasted-1/220-30450.4A2IIIIJ, K
Coke, breeze-1/225-35151.2C4IIIIIIIH, Q
Coke, loose-725-35151.2D4IIIIIIIH, K, N
Coke, Petrol, calcined-735-45151.3D4IIIIIIIN
Compost-730-5030A1.0C1-C2IIIIVN, P, •
Bulk MaterialMaximum Particle Size (in.)Bulk Density (lbs/ft³)%
Trough Loading
Material Factor (MF)Component
/Bearing Series
Abrasive- nessCorrosive- nessFlowabilitySpecial Notes
Concrete, Pre-Mix, dry-1/285-12030B3.0C4IIIIIIM
Copper Ore+ 1/2120-15030B4.0D4IIIIII 
Copper Ore, crushed+ 1/2120-15030B4.0C4IIIIII 
Copper Sulfate (Bluestone)-1/275-9530A1.0B1-B2-B3IIIIIII
Copperas (Ferrous Sulfate)-1/250-7530A1.0B4IIIIIM
Copra, cake, ground-1/840-4530A0.7A1-A2-A3IIIVC, O
Copra, cake, lumpy-325-3030A0.8B1-B2-B3IIIIIC, O
Copra, lumpy+ 1/22230A1.0B1-B2-B3IIIIIC, O
Copra, meal-1/840-4530A0.7B4IIIIIC, O
Cork, granulated-1/212-1530A0.5A1-A2-A3IIIIID, V, Q
Cork, ground-1/85-1530A0.5A1-A2-A3IIIIID, V, Q
Corn, cleanings-1/820-3030A0.4A1-A2-A3IIIIIJ, Q
Corn, cracked-1/840-50450.7A1-A2-A3IIIIH, J
Corn, grits-1/840-4530A0.5A1-A2-A3IIIIIH, J
Corn, steeped-340-600.8
Corn, shelled-1/245450.4A1-A2-A3IIIIH, V
Corn Cobs, ground-1/217450.6A1-A2-A3IIIIH, Q
Corn Cobs, wholeIrregular12-1530AB1-B2IIIIH, N, •
Corn Ear-165630AB1-B2IIIIIH, N
Corn Fiber Feed-1/815-3530A1.5IIIII 
Corn Fiber, dewatered-1/810-2530A0.6A1-A2-A3IIIII 
Corn Fiber, wet-1/815-5030A0.8A1-A2-A3IIIIIJ, M
Corn Filter Aid-1/815-50152.5C4IIIIIII 
Corn Germ-1/82130A0.4A1-A2-A3IIIIIH, J, O, Q
Corn Germ, dewatered-1/830-3530A0.6A1-A2-A3IIIIIH, J, M
Corn Germ, dry-1/830-4030A0.5A1-A2-A3IIIII 
Corn Germ, expanded cake-1/830-4030A2.0A1-A2-A3IIIII 
Corn Germ, oil meal-1/830-3530A0.6A1-A2-A3IIIII 
Corn Oil, cake-72530A0.6A1-A2IIIVC, O
Corn Seed-1/245450.4A1-A2-A3IIIIH, J, K
Corn Sugar-1/830-3530A1.0A2IIIIIH, J, M, V
Corn Sugar, crystalline, dry-1/825-6030A1.5A2IIIII 
Corn Sugar, crystalline, wet-1/830-6030A1.5A2IIIII 
Corn Meal-1/832-4030A0.5A1-A2IIIIIH, J, O, V
Cottonseed, cake, crushed-1/240-4530A1.0A1-A2IIIVC, O, V
Cottonseed, cake, lumpy-740-4530A1.0B1-B2IIIVC, O, V
Cottonseed, dry, delinted-1/222-40450.6A1-A2IIIIP, V
Cottonseed, dry, not delinted-1/218-2530A0.9A1-A2IIIVP, Q, V
Cottonseed, flakes-1/220-2530A0.8A1-A2IIIIIC, O, Q, V
Cottonseed, hulls-1/81230A0.9A1-A2IIIIIQ, V
Cottonseed, meal, expeller-1/825-3030A0.5C1-C2IIIVC, O, V
Cottonseed, meal, extracted-1/835-4030A0.5A1-A2IIIVC, O, V
Cottonseed, meal, dry-1/84030A0.6A1-A2IIIIIC, O, V
Cottonseed, meal, rolled-1/235-4030A0.6A1-A2IIIVC, O, V
Cracklings, crushed-340-5030A1.3B1-B2-B3IIIVC, O, V
Cryolite, dust (Kryalith)-100M75-9030B2.0B4IIIIIIF, G, L, V
Cryolite, lumpy (Kryalith)-1690-11030B2.1B4IIIIIIL, V
Cullet, fine-1/280-120152.0D4IIIIIII 
Cullet, lump-1680-120152.5D4IIIIIII 
Cupric Sulfate (Copper Sulfate)-1/275-9530A1.0B1-B2-B3IIIIIII
Bulk MaterialMaximum Particle Size (in.)Bulk Density (lbs/ft³)%
Trough Loading
Material Factor (MF)Component
/Bearing Series
Abrasive- nessCorrosive- nessFlowabilitySpecial Notes
Diatomaceous Earth (Diatomite)-1/6411-1730B1.6C4IIIIIIG, P, Q, •
Dicalcium Phosphate-1/6440-5030A1.6A1-A2-A3IIIIIV
Disodium Phosphate-1/6425-3130A0.5C4IIIIIK
Distiller’s Grain, spent, dry-1/83030A0.5B4IIIII 
Distiller’s Grain, spent, wet-1/240-6030A0.8C1-C2IIIVN
Dolomite, crushed-1/280-10030B2.0B4IIIIII 
Dolomite, lumpy+1/290-10030B2.0B4IIIIII 
Earth, Loam, dry, loose-1/27630B1.2B4IIIIII 
Ebonite-1/263-7030A0.8A1-A2-A3IIIIIV
Egg, powder-1/641630A1.0A2IIIIIG, H, J, Q
Epsom Salts (Magnesium Sulfate)-1/6440-5030A0.8A1-A2-A3IIIIIM, V
Ethanedioic Acid (Oxalic Acid)-1/86030A1.0A1-A2IIIIIIIL, M
Feldspar, ground-100M65-80152.0B4IIIIIII 
Feldspar, lumps-790-100152.0B4IIIIIII 
Feldspar, powder-200M10030B2.0B4IIIIII 
Feldspar, screenings-1/275-80152.0B4IIIIIII 
Ferrous Sulphate-1/250-7530A1.0B4IIIIIM
Ferrous Sulfide (Iron Sulfide), lumps-1/2120-13530B2.0A1-A2-A3IIIIIV
Ferrous Sulfide (Iron Sulfide), mesh-100M105-12030B2.0A1-A2-A3IIIIIIV
Fish Meal-1/235-4030A1.0A1-A2-A3IIIVC, J, V
Fish Scraps-740-5030A1.5B1-B2-B3IIIVC, •
Flaxseed-1/843-4530A0.4A1-A2-A3IIIIIH, P, V
Flaxseed Cake (Linseed Cake)-748-5030A0.7B1-B2IIIVO
Flaxseed Meal (Linseed Meal)-1/825-4530A0.4A1-A2IIIVO, V
Flour, Graphite-100M2830A0.5A1-A2-A3IIIIIF, G, J, V
Flour, Oat-100M3530A0.5A1-A2-A3IIIIIV
Flour, Potato-200M4830A0.5A1-A2IIIIIG, H, J, V
Flour, Silica-1/648030B1.5B4IIIIV 
Flour, Soybean-1/6425-3530A1.0A1-A2-A3IIIIIG, H, V
Flour, Wheat-1/6433-4030A0.6A2IIIVF, H, J, V
Flour, Wood-1/816-3630A0.4A1-A2IIIIIH, P, Q, V
Flour Calcine-100M75-8530A0.7A1-A2-A3IIIII 
Flue Dust, Basic Oxygen Furnace-1/6445-6030B3.5C4IIIIIIF, G
Flue Dust, Blast Furnace-1/64110-12530B3.5C4IIIIII 
Flue Dust, Boiler H, dry-1/6430-4530B2.0C4IIIIIIF, G
Fluorspar (Calcium Fluoride)-1/880-10030B2.0B4IIIIII 
Fluorspar, lumps-790-11030B2.0B4IIIIII 
Flyash-1/6430-4530B2.0C4IIIIIIG
Flyash, Coal-1/6430-6030B2.0C4IIIIIIG
Flyash, Fluidized Bed-1/6460-9030B3.0C4IIIIII 
Foundry Sand, dry-1/890-110151.7C4IIIIIII 
Fuller’s Earth, Oil Filter, burned-1/840152.0C4IIIIII 
Fuller’s Earth, Oil Filter, raw-1/835-4030B2.0B4IIIII 
Fuller’s Earth, Oil Filter, spent35% oil60-65152.0D4IIIIIIII, O
Galena (Lead Sulfide)-100M240-26030A1.2B4IIIIIG, L, P
Gelatin, granulated-1/83230A0.8A2IIIIIJ, K, M, V
Gilsonite-1/23730B1.5D4IIIIIIIH, L
Glass, Batch-1/280-100152.5D4IIIIIII 
Glue, ground-1/84030A1.7B4IIIIVM
Glue, pearl-1/24030A0.5A1-A2-A3IIIIIM
Glue, veg., powdered-1/644030A0.6A1-A2-A3IIIVM
Gluten Cake, wet-1/230-5030A2.5A2IIIV 
Gluten, Meal, dry-1/830-4030A0.6A2IIIIIJ
Granite, broken+1/295-100152.5D4IIIIII 
Granite, fine-1/280-90152.5C4IIIIII 
Grape Pomace-315-2030A1.4B4IIIVM, Q, V
Graphite Flakes-1/840450.5A1-A2-A3IIIIF, J, V
Graphite Flour-100M2830A0.5A1-A2-A3IIIIIF, G, J, V
Graphite Ore+1/265-7530A1.0B4IIIIIF
Grass Seed-1/810-3230A0.4A2IIIIIH, Q
Guano, dry-1/27030A2.0C1-C2IIIII
Gypsum, calcined-1/855-6030A1.6B4IIIIIM
Gypsum, calcined, powdered-100M60-8030A2.0B4IIIIIM
Gypsum, raw-370-8030A2.0B4IIII 
Green Vitriol (Ferrous Sulfate)-1/250-7530B1.0B4IIIII 
Bulk MaterialMaximum Particle Size (in.)Bulk Density (lbs/ft³)%
Trough Loading
Material Factor (MF)Component
/Bearing Series
Abrasive- nessCorrosive- nessFlowabilitySpecial Notes
Hay, chopped-1/28-1230A1.6B1-B2IIIIID, Q, •
Hexanedioic Acid (Adipic Acid)-100M4530A0.5D3IIIIIH, M
Hominy-1/235-5030A0.4A1-A2-A3IIIIJ, V
Hops, spent, dry-33530A1.0B1-B2-B3IIIIIV
Hops, spent, wet-350-5530A1.5D3IIIIVN, V
Hydroxybenzoic Acid (Salicylic Acid)-1/829150.6C4IIIIIIIM
Ice, crushed-335-4530A0.4B1-B2IIIIIK, V
Ice, cubed-333-3530A0.4A2IIIIIK, V
Ice, flaked-1/240-4530A0.6A2IIIIIK, V, •
Ice, shells-333-3530A0.4A2IIIVK, V
Ilmenite Ore-3140-160152.0C4IIIIIII 
Iron Ore-1/64120-180152.2C4IIIIIII 
Iron Oxide Pigment-100M2530B1.0A1-A2-A3IIIIIIF, G, J
Iron Oxide, Millscale-1/27530B1.6B4IIIII 
Kafir (Corn)-1/240-4530A0.5C4IIIIV
Kaolin Clay-36330A2.0B4IIII 
Kaolin Talc-1/6442-5630A2.0B4IIIIIF, G, J
Lactose-1/643230A0.6A2IIIIIH, J, M, P
Lead Arsenate-1/647230A1.4A1-A2-A3IIIIIG, L
Lead Arsenite-1/647230A1.4A1-A2-A3IIIIIG, L
Lead Carbonate-1/64240-26030A1.0B4IIIIIG, L
Lead Ore-1/8200-27030A1.4C4IIIIIL
Lead Ore-1/2180-23030B1.4C4IIIIIIL
Lead Oxide, Red Lead-100M30-15030A1.2B4IIIIIIG, J, L
Lead Oxide, Red Lead-200M30-18030A1.2B4IIIIIIF, G, J, L
Lead Sulfide-100M240-26030A1.0B4IIIIIIG, L, P
Lignite, air-dried-337-4530A1.0B4IIIIIIH
Lime, hydrated-1/84030A0.8B4IIIIIF, G, P, V
Lime, hydrated, pulverized-1/6432-4030A0.6A1-A2IIIIIF, G, P, V
Lime, unslaked-1/86030A0.6A2IIIIIP, V
Lime, pebble, unslaked-1/253-56452.0B1IIIIC, M
Limestone, agricultural-1/86830A2.0B4IIIIII 
Limestone, crushed+1/285-9030B2.0B4IIIIII 
Limestone, dust-1/6455-9530B1.6-2.0B4IIIIVG, Q
Limonite, ore-1/2120151.7C4IIIIIV 
Lindane (Benzene Hexachloride)-100M5630A0.6A1-A2-A3IIIVL
Litharge (Lead Oxide)-100M30-15030A1.2B4IIIIIIG, J, L
Lithopone-200M45-5030A1.0A1-A2IIIIIG, L
Bulk MaterialMaximum Particle Size (in.)Bulk Density (lbs/ft³)%
Trough Loading
Material Factor (MF)Component
/Bearing Series
Abrasive- nessCorrosive- nessFlowabilitySpecial Notes
Magnesium Chloride (Magnesite)-1/23330A1.0A1-A2IIIV 
Magnesium Sulfate (Epsom Salts)-1/6440-5030A0.8A1-A2-A3IIIIIM
Maize-1/840-45450.4A1-A2-A3IIIH
Malt, dry, ground-1/820-3030A0.5A1-A2-A3IIIIIH, J, L, Q, V
Malt, dry, whole-1/220-3030A0.5A1-A2-A3IIIIIH, V
Malt, wet or green-1/260-6530A0.4A1-A2-A3IIIII 
Malt, meal-1/836-4030A0.4A1-A2-A3IIIIJ, V
Malt, sprouts-1/213-1530A0.4A1-A2-A3IIIIIJ, V
Manganese Dioxide-100M70-8530A1.5B1-B2IIIIIIH, L, •
Manganese Ore+1/2125-140152.0C4IIIIIII 
Manganese Oxide-100M12030B2.0B4IIIIII 
Manganese Sulfate-1/270152.4C4IIIIIII 
Marble, crushed-1/880-95152.0C4IIIIIII 
Marl (Clay)+ 1/28030B1.6B4IIIIII 
Meat, ground-1/450-5530A1.5B1-B2IIIIVC, K, P, •
Meat, scraps, with boneScraps4030B1.5D4IIIIVC, N, •
Mica, flakes-1/817-2230B1.0B4IIIIG, N, Q, V
Mica, ground-1/813-1530B0.9B4IIIIIIV
Mica, pulverized-100M13-1530B1.0B4IIIIIIG, V
Milk, dried, flakes-1/85-630A0.4A2IIIIIH, J, M, Q
Milk, dried, whole-100M2030A0.4A2IIIIIG, J, M P
Milk, malted-1/6427-3030A0.9A2IIIVG, H, J, P
Milk, powdered-1/820-45450.5A2IIIIG, H, J
Milk, powdered, whole-1/820-3630A0.5A2IIIIIJ, M, P
Milk Sugar (Lactose)-100M3230A0.8A2IIIIIH, J, P
Mill Scale (Steel)Irregular120-12530B3.0C4IIIIIV 
Milo, ground-1/832-3630A0.5A1-A2-A3IIIIV
Milo, maize (Kafir)-1/840-45450.4A1-A2-A3IIIH, V
Molybdenite Powder-1/810730A1.5B4IIIII 
Monosodium Phosphate-1/85030B0.6B4IIIIII 
Mortar, wetIrregular15030B3.0C4IIIIIV 
Muriate of Potash-1/877151.8D4IIIIIIII 
Mustard Seed-1/845450.4A1-A2-A3IIIH, V
Naphtalene Flakes-1/84530A0.7A1-A2-A3IIIIIV
Nicotinic Acid (Niacin)-1/643530A0.8B4IIIIIJ
Oakite (Trisodium Phosphate)-1/86030B1.7B4IIIII 
Oats-1/226450.6A1-A2-A3IIIiG, H, V
Oats, crimped-1/219-2630A0.5A1-A2-A3IIIIIV
Oats, crushed-1/82230A0.6A1-A2-A3IIIVH, Q, V
Oats, flour-100M3530A0.5A1-A2-A3IIIIIV
Oats, hulls-1/88-1230A0.5A1-A2-A3IIIIIH, Q, V
Oats, rolled-1/219-2430A0.6A1-A2-A3IIIIIH, Q, V
Oleo (Margarine)Irregular5930A0.4B1-B2IIIVC, E, J, O, P
Orange Peels, dryIrregular1530A1.5B1-B2IIIV 
Oxalic Acid, Crystal—Ethane Diacid Crystal-1/86030A1.0A1-A2IIIIIIIK, M
Oyster Shells, ground-1/250-6030B2.0B4IIIIIII 
Oyster Shells, whole-38030B2.5B4IIIIIIIN
Bulk MaterialMaximum Particle Size (in.)Bulk Density (lbs/ft³)%
Trough Loading
Material Factor (MF)Component
/Bearing Series
Abrasive- nessCorrosive- nessFlowabilitySpecial Notes
Paper Pulp, stock5%6230A1.5B1-B2IIIVN
Paper Pulp, stock6-15%60-6230A1.7B1-B2IIIVN
Paraffin Cake, broken-1/24530A0.6A1-A2IIIVE
Peanuts, meal-1/83030A0.6A2IIIIIJ, V
Peanuts, clean, shelled-315-2030A0.6B1-B2IIIIIK
Peanuts, raw, uncleaned, unshelled-315-2030B0.7C4IIIIIK
Peanuts, shelled-1/235-4530A0.4A2IIIIIK, V
Peas, dried-1/245-50450.5A1-A2-A3IIIH, K, V
Perlite, expanded-1/28-1230B0.6B4IIIIII 
Phosphate Disodium-1/850-6030A0.9A1-A2IIIII 
Phosphate Acid, Fertilizer-1/860451.4B1-B2IIIII 
Phosphate Rock, broken+ 1/275-8530B2.1B2IIIIII 
Phosphate Rock, pulverized-1/86030B1.7B4IIIIII 
Phosphate of Soda (Disodium Phosphate)-1/6425-3130A0.5C4IIIIIK
Phosphate Sand, granular-1/890-100152.0C4IIIIIII 
Phosphoprotein (Casein)-1/83630B1.6B4IIIII 
Phosphoric Acid (Phosphate Acid)-100M6030A1.4A2IIII 
Plaster of Paris (Gypsum)-200M60-8030B0.9B4IIIIIIG
Polyethylene, pellets-1/83530A0.4A2IIIIIJ, K
Polystyrene Beads-1/84030A0.4A2IIIIJ, K, V
Polyvinyl Chloride, pelletsIrregular20-3030A0.6A2IIIIVE, J, K
Polyvinyl Chloride, powder-100M20-3030A1.0A1-A2-A3IIIIVE
Potash, dry (Muriate of Potash)-1/870152.0D4IIIIIIIII 
Potash, mine run (Muriate of Potash)+1/275152.2D4IIIIIIIII 
Potassium Carbonate-1/85130B1.0B4IIIIIII 
Potassium Chloride, pellets-1/2120-13030A1.6C4IIIIIM
Potassium Nitrate-1/27630B1.2D4IIIIIH, V
Potassium Nitrate-1/88030B1.2D4IIIIIIH, V
Potassium Sulfate-1/842-4830B1.0B4IIIIVP
Potato, flour-200M4830A0.5A1-A2IIIIIG, H, J, V
Pumice-1/842-4830B1.6C4IIIIV 
Pyrite, pellets-1/2120-13030B2.0C4IIIII 
Quartz-1/280-90152.5C4IIIIII 
Quartz-100M70-80151.7C4IIIIII 
Quicklime (Lime, unslaked)-1/86030A0.6A2IIIIIP
Red Lead (Lead Oxide)-100M30-15030A1.2B4IIIIIIG, J, L
Rice, hulled-1/245-49450.4A1-A2-A3IIIIJ, V
Rice, hulls-1/820-2130A0.4A1-A2-A3IIIIIH, Q
Rice, polished-1/230450.4A1-A2-A3IIIJ, V
Rice, rough-1/232-3630A0.6A1-A2-A3IIIIIH, V
Rice Bran-1/82030A0.4A1-A2-A3IIIIIH, Q, V
Rice Grits-1/842-4530A0.4A1-A2-A3IIIIIJ, V
Rosin-1/265-6830A1.5A1-A2-A3IIIVK, V
Rubber, pelleted-350-5530A1.5B1-B2-B3IIIV 
Rubber, reclaimed, ground-1/223-5030A0.8A1-A2-A3IIIVV
Rye-1/842-48450.4A1-A2-A3IIIH, V
Rye, bran-1/815-2030A0.4A1-A2-A3IIIIIQ, V
Rye, feed-1/83330A0.5A1-A2-A3IIIIIH, V
Rye, meal-1/835-4030A0.5A1-A2-A3IIIIIV
Rye, middlings-1/84230A0.5A1-A2IIIIIV
Rye, shorts-1/232-3330A0.5B1-B2IIIIIV
Bulk MaterialMaximum Particle Size (in.)Bulk Density (lbs/ft³)%
Trough Loading
Material Factor (MF)Component
/Bearing Series
Abrasive- nessCorrosive- nessFlowabilitySpecial Notes
Safflower, cake-35030B0.6B4IIIII 
Safflower, meal-1/85030A0.6A1-A2-A3IIIIIV
Safflower Seed (Safflower)-1/845450.4A1-A2-A3IIIH, V
Sal Ammoniac (Ammonium Chloride)-100M45-5230A0.7C1-C2IIIIIVA, L
Salicylic Acid-1/829150.6C4IIIIIIIM
Salt, dry coarse-1/245-6030B1.0C4IIIIIIIM, V
Salt, dry fine-1/870-8030B1.7C4IIIIIIIM, V
Salt Cake, dry, coarse (Sodium Sulfate)-1/88530B2.1C4IIIIIIIM
Salt Cake, dry, pulverized (Sodium Sulfate)-1/865-8530B1.7C4IIIIIIIM
Saltpeter (Potassium Nitrate)-1/27630B1.2C4IIIIIH
Sand, Dry Bank, damp-1/8110-130152.8C4IIIIIV 
Sand, Dry Bank, dry-1/890-110151.7C4IIIIIII 
Sand, Foundry, prepared-1/890153.0C4IIIIIII 
Sand, Foundry, shakeout-390-100153.0D4IIIIIIIR
Sand, Silica, dry-1/890-100152.0C4IIIIII 
Sand, Silica, resin-coated-1/8104152.0C4IIIIII 
Sand, Zircon, resin-coated-100M115152.3C4IIIIII 
Sawdust, dry-1/810-1330A1.4A1-A2-A3IIIVM, P
Sea-Coal-1/86530B1.0B4IIIIII 
Seed, Alfalfa-1/810-15450.4A1-A2-A3IIIH
Seed, Clover-1/845-48450.4A1-A2-A3IIIIH
Seed, Corn-1/245450.4A1-A2-A3IIIIH, J, K
Seed, Grass-1/810-3230A0.4A2IIIIIH, Q
Seed, Mustard-1/845450.4A1-A2-A3IIIH, V
Seed, Safflower-1/845450.4A1-A2-A3IIIH, V
Seed, Sesame-1/827-4130B0.6B4IIIIIV
Seed, Sorghum (Milo or Kafir)-1/832-3630A0.5A1-A2-A3IIII 
Seed, Sunflower-1/219-38450.5A1-A2-A3IIIV
Seed, Timothy-1/83630A0.6B2IIIIIH, Q, V
Sesame Seed-1/827-4130B0.6B4IIIIIV
Shale, crushed-1/285-9030B2.0B4llIIII 
Shellac, powdered or granulated-1/83130A0.6A2IIIIIJ, V
Silica Flour-1/648030B1.5B4IIIIV 
Silica Gel (Silicic Acid)-345152.0C4IIIIIIIC, E, K, M
Silicon Dioxide (Quartz)-1/280-90152.5C4IIIIII 
Slag, Blast Furnace, crushed-3130-180152.4D4IIIIIIIQ
Slag, Furnace, granular, dry-1/260-65152.2A1-A2-A3IIIIIII 
Slaked Lime (Lime, hydrated)-1/84030A0.8B4IIIIIF, G, P
Slate, crushed-1/280-9030B2.0B4IIIIII 
Slate, ground-1/882-8530B1.6B4IIIIII 
Sludge, Sewage, dryIrregular40-5030B0.8D4IIIIIVO
Sludge, Sewage, dry, ground-1/845-5530B0.8D4IIIIIV 
Snow, fresh-1/85-1230A0.4A2IIIV 
Snow, packed+1/215-3530A0.8B1IIIV 
Soap, beads or granules-1/815-3530A0.6A1-A2-A3IIIIIK, M
Soap, chips-1/215-2530A0.6A1-A2-A3IIIIIK, M
Soap Detergent-1/815-5030A0.8A1-A2-A3IIIIIA, K
Soap Flakes-1/85-1530A0.6A1-A2-A3IIIIIK, M, P, Q
Soap Powder-1/820-3030A0.9A1-A2-A3IIIIP
Bulk MaterialMaximum Particle Size (in.)Bulk Density (lbs/ft³)%
Trough Loading
Material Factor (MF)Component
/Bearing Series
Abrasive- nessCorrosive- nessFlowabilitySpecial Notes
Soapstone (Talc)-200M40-5030A2.0A1-A2-A3IIIVG, P, Q
Soda Ash, heavy (Sodium Carbonate)-1/855-6530B1.0B4IIIIII 
Soda Ash, light (Sodium Carbonate)-1/6420-3530B0.8B4IIIIIIG, Q, V
Sodium Aluminate, ground-1/87230B1.0B4IIIIII 
Sodium Aluminum Sulphate-100M7530B1.0B4IIIIII
Sodium Bicarbonate (Baking Soda)-100M40-55450.6A2IIII 
Sodium Nitrate-370-80451.2B1-B2IIIIIIH
Sodium Phosphate-1/850-6030A0.9A1-A2IIIII 
Sodium Sulfate, dry, coarse-1/88530B2.1C4IIIIIIIM
Sodium Sulfate, dry, pulverized-1/865-8530B1.7C4IIIIIIIM
Sodium Sulfite-1/89630B1.5B4IIIIVP
Sorghum Seed (Milo or Kafir)-1/832-3630A0.5A1-A2-A3IIII 
Soybean, dust-1/6425-3530A2.0A1-A2-A3IIIIIG, H
Soybean, cake-1/240-4330A1.0A1-A2-A3IIIIIO, V
Soybean, cracked-1/230-4030B0.6B4IIIIIIH, O, V
Soybean, flour-1/6425-3530A1.0A1-A2-A3IIIIIG, H, V
Soybean, meal, cold-1/835-4530A0.6A1-A2-A3IIIIIV
Soybean, meal, hot-1/84030A0.6D3IIIIII 
Soybean, whole-1/245-5030B1.0B4IIIIIH, O
Soybean Flakes, raw-1/215-3530A0.8A1-A2-A3IIIIIQ, V
Soybean Flakes, spent-1/418-2030A0.6A2IIIIQ, V
Starch-1/6425-50451.0A1-A2-A3IIIG, H, V, •
Steel Turnings (Chips), crushed-3100-15030B3.0D4IIIIVN, O
Stibium (Antimony)-100M30A1.6B4IIIII
Sugar, Powdered-100M50-6030A0.8A2IIIIIH, J, P,
V, •
Sugar, raw, cane-1/855-6530A1.5A2IIIIIH, J, P
Sugar, refined, granulated, dry-1/850-5530A1.0-1.2A2IIIIIH, J, M, V
Sugar, refined, granulated, wet-1/255-6530A1.4-2.0A2IIIIIP
Sugar Beet, pulp, dry-1/212-1530B0.9B4IIIIIH, •
Sugar Beet, pulp, wet-1/225-4530A1.2A1-A2-A3IIIIIH, P
Sulphur, crushed-1/250-6030A0.8A1-A2IIIIIH
Sulphur, ground-1/6450-6030A0.6A1-A2IIIIG, H
Sulphur, lumps-380-8530A0.8D4IIIIIH
Sunflower Seed-1/219-38450.5A1-A2-A3IIIV
Bulk MaterialMaximum Particle Size (in.)Bulk Density (lbs/ft³)%
Trough Loading
Material Factor (MF)Component
/Bearing Series
Abrasive- nessCorrosive- nessFlowabilitySpecial Notes
Taconite, pellets+1/2116-130152.0D4IIIIIIK
Talc-1/280-9030B0.9B4IIIIII 
Talc, powder-200M50-6030B0.8B4IIIIIIG, P, V
Tanbark, ground-1/85530A0.7A1-A2-A3IIIV
Timothy Seed-1/83630A0.6B2IIIIIH, Q, V
Titanium Dioxide (llmenite)-3140-160152.0C4IIIIIII 
Tobacco, scraps-315-2530A0.8B1-B2IIIVQ
Tobacco, snuff-1/83030A0.9A1-A2-A3IIIVH, G, K, V
Tricalcium Phosphate-1/6440-5030A1.6A1-A2IIIV 
Triple Super Phosphate-1/850-5530B2.0C4IIIIIIIIL
Trisodium Phosphate-1/26030B1.7B4IIIIII 
Trisodium Phosphate, granular-1/86030B1.7B4IIIIII 
Trisodium Phosphate, pulverized-1/645030B1.6B4IIIIIIV
Tung Nuts-325-3030A0.7B1-B2IIIV
Tung Nut Meats, crushed-32830A0.8B1-B2IIIIO, V
Uintaite (Bentonite)-100M50-60450.7B4IIIIG, P, Q
Urea Prills, Coated-1/843-46451.2A1-A2-A3IIII 
Vermiculite, expanded-1/21630A0.5A1-A2IIIIIQ
Vermiculite, ore-38030B1.0B4IIIIII 
Vetch-1/84830B0.4A1-A2-A3IIIIH, V
Vulcanite (Ebonite)-1/263-7030A0.8A1-A2-A3IIIII 
Walnut Shells, crushed-1/835-4530B1.0B4IIIIIIV
Wheat-1/245-48450.4A1-A2-A3IIIIH, V
Wheat, cracked-1/840-45450.4A1-A2-A3IIIIH, V
Wheat, germ-1/818-28450.4A1-A2-A3IIIIV
White Lead, dry-1/6475-10030B1.0B4IIIIIIG, L, V
Wood Bark+1/28-1630B1.5B1-B2IIIVN, Q
Wood Chips, screened-310-3030A0.6B1-B2IIIVN, Q
Wood Flour-1/816-3630A0.4A1-A2IIIIIH, P, Q, V
Zinc Concentrate Residue-1/875-80151.0C4IIIIIII 
Zinc Oxide, heavy-100M30-3530A1.0A1-A2IIIVG, P
Zinc Oxide, light-100M10-1530A1.0A1-A2IIIVG, P, Q, V

A Statement From KWS Concerning COVID-19