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Horizontal Screw Conveyor Calculator

Capacity, Horsepower, And RPM Calculation: Save time by utilizing our Horizontal Screw Conveyor Calculator to accurately determine screw conveyor size, horsepower, and RPM requirements in a few easy clicks. Send your calculations directly to KWS engineers for review and input as required. Visit the online engineering guide for assistance with using this calculator.
Step 1: SELECT YOUR BULK MATERIAL		Step 2: DESIGN CONDITIONS
Flowrate(m):	lb/hr ( Ft^3/hr)
Density:	lb/Ft^3
Loading (K):	%
Material Factor (Fm):		lb/Ft^3
SPCL. FLIGHT TYPE – Place an “x” in the appropriate box. (If using standard flighting, leave all selections blank)
Cut Flight:
Cut & Folded Flt.:
Ribbon Type:
Paddles per Pitch:	(0 – 4)

Step 3: CONVEYOR PARAMETERS
Flight OD(D):		in. in.
Flight ID(d):		in.
Pitch(P) :		in.

CALCULATIONS :
	Shaftless Mass Flow Factor, C1	=
	Spcl. Flight Type Factor, CF2	=

Flowrate (v)

Density

Capacity per revolution

0.7854 ( D² – d² ) P K 60 I C1

1728 CF2

Visit the online engineering guide for assistance with using this calculator. Click on symbol for more information.
Conveyor Length(L):			Ft		8. Paddles per Pitch :		(0 – 4)
2.	Conveyor Diameter (D):			in.		9. Flight Type :		Standard
3.	Conveyor Speed(N) :			rpm				Cut Flight
4.	Loading (K) :			%				Cut & Folded
								Ribbon
Drive Efficiency(e) :			%
7.	Hanger Bearing Type :	Place an ‘x’ in the appropriate box
			Ball, Roller or None					Hard Iron, Stellite
			Arguto, Babbit, Bronze, Wood					Plastech, Nylon, Teflon,
								UHMW

Step 4: DESIGN OUTPUTS
13a.	Conv. Capacity (Cw):			Lb/Hr
		-or-
13b.	Conv. Capacity (Cv):
14.	Density(W):

CALCULATIONS :
	Diameter Factor(Fd)		=
	Bearing Factor(Fb)		=
	Paddle Factor(Fp)		=
	Spcl. Flight Factor(Ff)		=

HPf

L N Fd Fb

Fo =

1000000

HPm

Cw L Ff Fm Fp

1000000

-or-

Minimum Required Horsepower:

HPt =

(HPf + HPm) Fo

Required Speed, N:

RPM

Note: The Maximum recommended RPM Depends on Product Selection – Select Material in Step 1 – or reference the Capacity Table here.

The design above has a screw that is rotating faster than the CEMA recommended RPM. KWS Recommends that you increase the diameter of the screw conveyor or consult with a KWS representative.

Cv W L Ff Fm Fp

1000000

	MATERIAL
	Grade 2 Bolts&	Grade 5 Bolts&	304 ss	316 ss
	1018 Shafts	1045 Shafts
	Ss	Sy	Ss	Sy	Ss	Sy	Ss	Sy
Bolt	6200 Grd. 2	35000	15500	92000	6000	30000	6000	30000
Shaft	7000	58000	8750		6000	30000	6000	30000
Pipe (bearing)	6000	30000	–	–	6000	30000	6000	30000
Pipe (shear)	6700		6000	30000	6000	30000

Pipe	ID	ID
Size	SCH 40	SCH 80
1.25	1.38	1.28
1.5	1.61	1.5
2	2.06	1.94
2.5	2.47	2.32
3	3.07	2.9
3.5	3.55	3.36
4	4.03	3.82
5	5.05	4.81
6	6.07	5.76
7
8	7.98	7.62
9
10	10.02	9.75
11
12	12	11.75
14	13.12
16	15
18	16.88

Shaft Size	Cplg. Bolts
in.	in.
1	0.375
1.5	0.5
2	0.625
2.4375	0.625
3	0.75
3.4375	0.875

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Dimensional Layout of Conveyor Return to Index

Bulk Material	Maximum Particle Size (in.)	Bulk Density (lbs/ft³)	% Trough Loading	Material Factor (MF)	Component /Bearing Series	Abrasive- ness	Corrosive- ness	Flowability	Special Notes
Acetylenogen (Calcium Carbide)	+ 1/2	70-90	30A	2.0	B4	I	I	II	H
Adipic Acid	-100M	45	30A	0.5	D3	I	I	III	H, M, V
Alfalfa Meal	-1/8	14-22	30A	0.6	B4	I	I	IV	O, Q, V
Alfalfa Pellets	-1/2	41-43	45	0.5	B4	I	I	II
Alfalfa Seed	-1/8	10-15	45	0.4	A1-A2-A3	I	I	I	H
Almonds	-1/2	28-30	30A	0.9	B4	I	I	III	K
Alum, fine	-1/8	45-50	30A	0.6	A1-A2-A3	I	I	III	M, •
Alum, lumpy	+ 1/2	50-60	30A	1.4	B1-B2	I	I	II	•
Alumina	-1/8	55-65	15	1.8	C4	III	I	II	G, Q
Alumina, fine	-100M	35	15	1.6	C4	III	I	II	G, Q
Alumina, sized or briquette	-3	65	15	2.0	C4	III	I	III
Aluminate Gel (Aluminate Hydroxide)	-1/8	45	30A	1.7	B4	I	I	III	V
Aluminum Chips, dry	-1/2	7-15	30A	1.2	B4	I	I	IV	H, N
Aluminum Chips, oily	-1/2	7-15	30A	0.8	B4	I	I	IV	N, Q, V
Aluminum Hydrate (Aluminum Hydroxide)	-1/2	13-20	30A	1.4	A1-A2-A3	I	I	III	H, V
Aluminum Oxide	-100M	60-120	15	1.8	C4	III	I	I	G, H
Aluminum Ore (Bauxite)	-3	75-85	15	1.8	D4	III	I	II
Aluminum Silicate (Andalusite)	-1/2	49	30A	0.8	C1-C2	I	III	III	V
Aluminum Sulfate (Alum)	-1/2	45-58	45	1.0	A1-A2-A3	I	I	II
Ammonium Chloride, Crystalline	-100M	45-52	30A	0.7	C1-C2	I	III	IV	A, L
Ammonium Nitrate	-1/8	45-62	30A	1.3	C3	I	II	III	H, M, •
Ammonium Sulfate	-1/2	45-58	30A	1.0	A1-A2-A3	I	II	III	A, I, M, •
Antimony Powder	-100M	•	30A	1.6	B4	II	I	II	V, •
Apple Pomace, dry	-1/2	15	30A	1.0	B4	I	I	IV	Q, V
Arsenate of Lead (Lead Arsenate)	-1/64	72	30A	1.4	A1-A2-A3	I	I	III	G, L
Arsenic Oxide (Arsenolite)	-100M	100-120	30A	•	•	I	•	III	L, •
Arsenic, pulverized	-100M	30	45	0.8	B4	I	•	II	L, •
Asbestos Rock, ore	-3	81	15	1.2	C4	III	I	III	L
Asbestos, shredded	Fibers	20-40	30B	1.0	B4	II	I	IV	L, P, Q
Ash, Black, ground	-1/8	105	30A	2.0	A1-A2-A3	I	I	III
Ashes, Coal, dry	-1/2	35-45	30B	3.0	C4	II	II	IV	Q
Ashes, Coal, dry	-3	35-40	30B	2.5	C4	II	II	IV
Ashes, Coal, wet	-1/2	45-50	30B	3.0	D4	II	II	IV	P
Ashes, Coal, wet	-3	45-50	30B	4.0	D4	II	II	IV	P
Asphalt, crushed	-1/2	45	30A	2.0	A1-A2-A3	I	I	IV

Bulk Material	Maximum Particle Size (in.)	Bulk Density (lbs/ft³)	% Trough Loading	Material Factor (MF)	Component /Bearing Series	Abrasive- ness	Corrosive- ness	Flowability	Special Notes
Bagasse, dry	Fibers	7-10	30A	1.5	B1-B2-B3	I	I	IV	L, N, P, Q
Bakelite	-1/8	30-45	45	1.4	A1-A2-A3	I	I	II
Baking Powder	-100M	40-55	30A	0.6	A2	I	I	III
Baking Soda (Sodium Bicarbonate)	-100M	40-55	45	0.6	A2	I	I	II
Barite (Barium Sulfate)	+1/2	120-180	30B	2.6	D4	II	I	III
Barite, powder	-100M	120-180	30B	2.0	B4	I	I	III	G, P
Barium Carbonate	-100M	72	30B	1.6	B4	I	I	IV	L
Bark, Wood	+1/2	10-20	30B	2.0	C4	I	II	IV	N, Q
Barley, fine ground	-1/8	24-38	30B	0.4	A1-A2-A3	I	I	III
Barley, malted	-1/2	31	30A	0.4	A1-A2-A3	I	I	III
Barley, meal	-1/2	28	30A	0.4	A1-A2-A3	I	I	III
Barley, whole	-1/8	36-48	45	0.5	A1-A2-A3	I	I	II	H
Basalt	-1/8	80-105	15	1.8	C4	III	I	II
Bauxite, crushed	-3	75-85	30B	2.5	D4	II	I	III
Bauxite, dry, crushed	-1/8	68	15	1.8	C4	I	I	II
Beans, Castor, meal	-1/8	35-40	30A	0.8	A1-A2-A3	I	I	III	O
Beans, Castor, whole, shelled	-1/2	36	45	0.5	A1-A2-A3	I	I	I	O
Beans, Navy, dry	-1/2	48	45	0.5	A1-A2-A3	I	I	I
Beans, Navy, steeped	-1/2	60	45	0.8	A1-A2-A3	I	I	II
Beans, Soy	-1/2	45-50	45	0.5	A2	I	I	I
Beet Pulp, dry	•	11-16	•	•	•	•	•	•	•
Beet Pulp, wet	•	25-45	•	•	•	•	•	•	•
Bentonite	-100M	50-60	45	0.7	B4	I	I	II	G, P, Q
Bentonite, Crude	-3	34-40	30A	1.2	B2	I	I	IV	P
Benzene Hexachloride	-100M	56	30A	0.6	A1-A2-A3	I	I	IV	L
Blood, dried	-3	35-45	30A	2.0	B4	I	I	IV	M
Blood, dried, ground	-100M	30	30A	1.0	A1-A2	I	I	III	M
Bluestone (Copper Sulfate)	-1/2	75-95	30A	1.0	B1-B2-B3	I	III	III	•
Bone Ash (Tricalcium Phosphate)	-100M	40-50	30A	1.6	A1-A2	I	I	IV
Boneblack	-100M	20-25	45	1.5	A1-A2	I	I	II	Q
Bonechar	-1/8	27-40	30A	1.6	A1-A2	I	I	III
Bonemeal	-1/8	50-60	30A	1.7	B4	I	I	III
Bones, crushed	-3	35-50	30A	2.0	B4	I	I	IV
Bones, ground	-1/8	50	30A	1.7	B4	I	I	III
Bones, whole	Irregular	35-50	30A	3.0	B4	I	I	IV	N
Borate of Lime	-100M	60	30A	0.6	A1-A2-A3	I	I	III	•
Borax, lumps	1 1/2 to 2	55-60	30A	1.8	B4	I	I	III
Borax, lumps	2 to 3	60-70	30A	2.0	B4	I	I	III
Borax, fine	-1/8	45-55	45	0.7	C4	I	II	II
Borax, screenings	-1/2	55-60	30A	1.5	B4	I	I	III
Boric Acid	-1/8	55	45	0.8	C4	I	II	II
Boron	-100M	75	15	1.0	B4	III	I	III
Bran, Rice/Rye/Wheat	-1/8	16-20	30A	0.5	A1-A2-A3	I	I	III	H, Q
Braunite (Manganese Oxide)	-100M	120	30B	2.0	B4	II	I	III
Bread Crumbs	-1/8	20-25	30A	0.6	A1-A2-A3	I	I	III	J,K
Brewer's Grain, spent, dry	-1/2	14-30	30A	0.5	A1-A2-A3	I	I	IV
Brewer's Grain, spent, wet	-1/2	55-60	30A	0.8	D3	I	II	IV
Brick, ground	-1/8	100-120	15	2.2	C4	III	I	III
Bronze Chips	-1/8	30-50	30A	2.0	B4	I	I	IV
Buckwheat	-1/8	37-42	45	0.4	A1-A2-A3	I	I	II	H

Bulk Material	Maximum Particle Size (in.)	Bulk Density (lbs/ft³)	% Trough Loading	Material Factor (MF)	Component /Bearing Series	Abrasive- ness	Corrosive- ness	Flowability	Special Notes
Calcine, Flour	-100M	75-85	30A	0.7	A1-A2-A3	I	I	III
Calcium Carbide	-3	70-90	30A	2.0	B4	I	I	II	H
Calcium Lactate	-3	26-29	30A	0.6	B1-B2	I	II	IV	K, L, P
Calcium Magnesium Carbonate	+ 1/2	90-100	30B	2.0	B4	II	I	II
Calcium Phosphate	-100M	40-50	30A	1.6	A1-A2-A3	I	I	IV
Carbon, Activated, dry, fine	-1/8	8-20	30A	1.2	B4	I	I	II	K, •
Carbon Black, fine	-100M	4-7	30A	0.4	A2	I	I	III	P, Q, •
Carbon Black, pelleted	-1/8	20-25	45	•	•	I	•	I	M, P, •
Carborundum*	-3	100	15	3.0	C4	III	I	II
Casein	-1/8	36	30A	1.6	B4	I	I	III
Cashew Nuts	-1/2	32-37	30A	0.7	B4	I	I	IV
Cast Iron, chips	-1/2	130-200	30A	4.0	B4	I	I	IV
Caustic Soda (Sodium Hydroxide)	-1/8	88	30A	1.8	D4	I	III	III	L, M
Caustic Soda, flakes (Sodium Hydroxide)	-1/2	47	30A	1.5	D4	I	III	IV	K, L, M, P
Celite (Diatomaceous Earth)	-1/64	11-17	30B	1.6	C4	II	I	III	G, P, Q, •
Cement, aerated (Portland)	-100M	60-75	30B	1.4	B4	II	I	I	G
Cement, clinker	-3	75-95	30B	1.8	D4	II	I	III
Cement, mortar	-1/8	133	30A	3.0	C4	I	I	III	K
Cement, Portland	-100M	94	30B	1.4	B4	II	I	II	G
Cerrusite (Lead Carbonate)	-1/64	240-260	30A	1.0	B4	I	I	III	G, L
Chalk, crushed	-3	75-95	30A	1.9	B4	I	I	II	P
Chalk, ground	-100M	67-75	45	1.4	B4	I	I	II	G, P, Q
Charcoal, ground	-100M	18-28	30A	1.2	B4	I	I	IV	H
Charcoal, lumps	-3	18-28	30A	1.4	B4	I	I	IV	H, K
Chips, Pulpwood	+1/2	12-25	30A	1.0	B1	I	I	III	N, Q
Chocolate Cake, pressed	-3	40-45	30A	1.5	B2	I	I	II
Chrome Ore	-3	125-140	30B	2.5	C4	II	I	III
Cinders, Blast Furnace	-3	57	30B	1.9	D4	II	II	III
Cinders, Coal	-3	40	30B	1.8	D4	II	II	III
Clay, brick, dry, fines	-1/2	100-120	30B	2.0	C4	II	I	III
Clay, calcined	-1/8	80-100	30B	2.4	C4	II	I	III
Clay, ceramic, dry, fine	-100M	60-80	30A	1.5	A1-A2-A3	I	I	III	J
Clay, dry, lumpy	-3	60-75	30A	1.8	B4	I	I	III
Clinker, Cement	-3	75-95	30B	1.8	D4	II	I	III
Clover Seed	-1/8	45-48	45	0.4	A1-A2-A3	I	I	II	H
Coal, Anthracite (Culm and River)	-1/8	55-61	30A	1.0	B1-B2	I	II	III
Coal, Anthracite, sized	-1/2	49-61	45	1.0	B1-B2	I	I	II
Coal, Bituminous, mined	-3	40-60	30A	0.9	A1-A2	I	I	III	F, H, P, Q
Coal, Bituminous, mined, sized	-3	45-55	30A	1.0	A1-A2	I	I	III	H, K, N
Coal, Bituminous, mined, slack	-1/2	43-50	30A	0.9	B1-B2	I	II	IV	H
Coal, Lignite	-3	37-45	30A	1.0	B4	I	II	III	H
Cocoa, Beans	-1/2	30-45	45	0.5	A1-A2	I	I	II	K
Cocoa, Nibs	-1/2	35	45	0.5	B4	I	I	II
Cocoa, Powdered	-100M	30-35	30A	0.9	A2	I	I	IV	G, P, Q
Coconut	Shredded	20-22	30A	1.5	B2	I	I	IV
Coffee, ground, dry	-1/64	25	30A	0.6	A1-A2	I	I	III	J
Coffee, ground, wet	-1/64	35-45	30A	0.6	A1-A2	I	I	IV	P
Coffee, soluble	-1/64	19	30A	0.4	A2	I	I	III	G,J,K,M,Q
Coffee, chaff	-1/8	20	45	1.0	A1-A2	I	I	II	G, Q
Coffee Beans, green	-1/2	25-32	45	0.5	A1-A2	I	I	II	J, K
Coffee Beans, roasted	-1/2	20-30	45	0.4	A2	I	I	II	J, K
Coke, breeze	-1/2	25-35	15	1.2	C4	III	I	III	H, Q
Coke, loose	-7	25-35	15	1.2	D4	III	I	III	H, K, N
Coke, Petrol, calcined	-7	35-45	15	1.3	D4	III	I	III	N
Compost	-7	30-50	30A	1.0	C1-C2	I	II	IV	N, P, •
Bulk Material	Maximum Particle Size (in.)	Bulk Density (lbs/ft³)	% Trough Loading	Material Factor (MF)	Component /Bearing Series	Abrasive- ness	Corrosive- ness	Flowability	Special Notes
Concrete, Pre-Mix, dry	-1/2	85-120	30B	3.0	C4	II	I	III	M
Copper Ore	+ 1/2	120-150	30B	4.0	D4	II	I	III
Copper Ore, crushed	+ 1/2	120-150	30B	4.0	C4	II	I	III
Copper Sulfate (Bluestone)	-1/2	75-95	30A	1.0	B1-B2-B3	I	III	III	•
Copperas (Ferrous Sulfate)	-1/2	50-75	30A	1.0	B4	I	I	III	M
Copra, cake, ground	-1/8	40-45	30A	0.7	A1-A2-A3	I	I	IV	C, O
Copra, cake, lumpy	-3	25-30	30A	0.8	B1-B2-B3	I	I	III	C, O
Copra, lumpy	+ 1/2	22	30A	1.0	B1-B2-B3	I	I	III	C, O
Copra, meal	-1/8	40-45	30A	0.7	B4	I	I	III	C, O
Cork, granulated	-1/2	12-15	30A	0.5	A1-A2-A3	I	I	III	D, V, Q
Cork, ground	-1/8	5-15	30A	0.5	A1-A2-A3	I	I	III	D, V, Q
Corn, cleanings	-1/8	20-30	30A	0.4	A1-A2-A3	I	I	III	J, Q
Corn, cracked	-1/8	40-50	45	0.7	A1-A2-A3	I	I	II	H, J
Corn, grits	-1/8	40-45	30A	0.5	A1-A2-A3	I	I	III	H, J
Corn, steeped	-3	40-60	•	0.8	•	•	•	•	•
Corn, shelled	-1/2	45	45	0.4	A1-A2-A3	I	I	II	H, V
Corn Cobs, ground	-1/2	17	45	0.6	A1-A2-A3	I	I	II	H, Q
Corn Cobs, whole	Irregular	12-15	30A	•	B1-B2	I	I	II	H, N, •
Corn Ear	-16	56	30A	•	B1-B2	I	I	III	H, N
Corn Fiber Feed	-1/8	15-35	30A	1.5	•	I	I	III
Corn Fiber, dewatered	-1/8	10-25	30A	0.6	A1-A2-A3	I	I	III
Corn Fiber, wet	-1/8	15-50	30A	0.8	A1-A2-A3	I	I	III	J, M
Corn Filter Aid	-1/8	15-50	15	2.5	C4	III	I	III
Corn Germ	-1/8	21	30A	0.4	A1-A2-A3	I	I	III	H, J, O, Q
Corn Germ, dewatered	-1/8	30-35	30A	0.6	A1-A2-A3	I	I	III	H, J, M
Corn Germ, dry	-1/8	30-40	30A	0.5	A1-A2-A3	I	I	III
Corn Germ, expanded cake	-1/8	30-40	30A	2.0	A1-A2-A3	I	I	III
Corn Germ, oil meal	-1/8	30-35	30A	0.6	A1-A2-A3	I	I	III
Corn Oil, cake	-7	25	30A	0.6	A1-A2	I	I	IV	C, O
Corn Seed	-1/2	45	45	0.4	A1-A2-A3	I	I	II	H, J, K
Corn Sugar	-1/8	30-35	30A	1.0	A2	I	I	III	H, J, M, V
Corn Sugar, crystalline, dry	-1/8	25-60	30A	1.5	A2	I	I	III
Corn Sugar, crystalline, wet	-1/8	30-60	30A	1.5	A2	I	I	III
Corn Meal	-1/8	32-40	30A	0.5	A1-A2	I	I	III	H, J, O, V
Cottonseed, cake, crushed	-1/2	40-45	30A	1.0	A1-A2	I	I	IV	C, O, V
Cottonseed, cake, lumpy	-7	40-45	30A	1.0	B1-B2	I	I	IV	C, O, V
Cottonseed, dry, delinted	-1/2	22-40	45	0.6	A1-A2	I	I	II	P, V
Cottonseed, dry, not delinted	-1/2	18-25	30A	0.9	A1-A2	I	I	IV	P, Q, V
Cottonseed, flakes	-1/2	20-25	30A	0.8	A1-A2	I	I	III	C, O, Q, V
Cottonseed, hulls	-1/8	12	30A	0.9	A1-A2	I	I	III	Q, V
Cottonseed, meal, expeller	-1/8	25-30	30A	0.5	C1-C2	I	I	IV	C, O, V
Cottonseed, meal, extracted	-1/8	35-40	30A	0.5	A1-A2	I	I	IV	C, O, V
Cottonseed, meal, dry	-1/8	40	30A	0.6	A1-A2	I	I	III	C, O, V
Cottonseed, meal, rolled	-1/2	35-40	30A	0.6	A1-A2	I	I	IV	C, O, V
Cracklings, crushed	-3	40-50	30A	1.3	B1-B2-B3	I	I	IV	C, O, V
Cryolite, dust (Kryalith)	-100M	75-90	30B	2.0	B4	II	I	III	F, G, L, V
Cryolite, lumpy (Kryalith)	-16	90-110	30B	2.1	B4	II	I	III	L, V
Cullet, fine	-1/2	80-120	15	2.0	D4	III	I	III
Cullet, lump	-16	80-120	15	2.5	D4	III	I	III
Cupric Sulfate (Copper Sulfate)	-1/2	75-95	30A	1.0	B1-B2-B3	I	III	III	•

Bulk Material	Maximum Particle Size (in.)	Bulk Density (lbs/ft³)	% Trough Loading	Material Factor (MF)	Component /Bearing Series	Abrasive- ness	Corrosive- ness	Flowability	Special Notes
Diatomaceous Earth (Diatomite)	-1/64	11-17	30B	1.6	C4	II	I	III	G, P, Q, •
Dicalcium Phosphate	-1/64	40-50	30A	1.6	A1-A2-A3	I	I	III	V
Disodium Phosphate	-1/64	25-31	30A	0.5	C4	I	I	III	K
Distiller’s Grain, spent, dry	-1/8	30	30A	0.5	B4	I	I	III
Distiller’s Grain, spent, wet	-1/2	40-60	30A	0.8	C1-C2	I	I	IV	N
Dolomite, crushed	-1/2	80-100	30B	2.0	B4	II	I	III
Dolomite, lumpy	+1/2	90-100	30B	2.0	B4	II	I	III
Earth, Loam, dry, loose	-1/2	76	30B	1.2	B4	II	I	III
Ebonite	-1/2	63-70	30A	0.8	A1-A2-A3	I	I	III	V
Egg, powder	-1/64	16	30A	1.0	A2	I	I	III	G, H, J, Q
Epsom Salts (Magnesium Sulfate)	-1/64	40-50	30A	0.8	A1-A2-A3	I	I	III	M, V
Ethanedioic Acid (Oxalic Acid)	-1/8	60	30A	1.0	A1-A2	I	III	III	L, M
Feldspar, ground	-100M	65-80	15	2.0	B4	III	I	III
Feldspar, lumps	-7	90-100	15	2.0	B4	III	I	III
Feldspar, powder	-200M	100	30B	2.0	B4	II	I	III
Feldspar, screenings	-1/2	75-80	15	2.0	B4	III	I	III
Ferrous Sulphate	-1/2	50-75	30A	1.0	B4	I	I	III	M
Ferrous Sulfide (Iron Sulfide), lumps	-1/2	120-135	30B	2.0	A1-A2-A3	II	I	II	V
Ferrous Sulfide (Iron Sulfide), mesh	-100M	105-120	30B	2.0	A1-A2-A3	II	I	III	V
Fish Meal	-1/2	35-40	30A	1.0	A1-A2-A3	I	I	IV	C, J, V
Fish Scraps	-7	40-50	30A	1.5	B1-B2-B3	I	I	IV	C, •
Flaxseed	-1/8	43-45	30A	0.4	A1-A2-A3	I	I	III	H, P, V
Flaxseed Cake (Linseed Cake)	-7	48-50	30A	0.7	B1-B2	I	I	IV	O
Flaxseed Meal (Linseed Meal)	-1/8	25-45	30A	0.4	A1-A2	I	I	IV	O, V
Flour, Graphite	-100M	28	30A	0.5	A1-A2-A3	I	I	III	F, G, J, V
Flour, Oat	-100M	35	30A	0.5	A1-A2-A3	I	I	III	V
Flour, Potato	-200M	48	30A	0.5	A1-A2	I	I	III	G, H, J, V
Flour, Silica	-1/64	80	30B	1.5	B4	II	I	IV
Flour, Soybean	-1/64	25-35	30A	1.0	A1-A2-A3	I	I	III	G, H, V
Flour, Wheat	-1/64	33-40	30A	0.6	A2	I	I	IV	F, H, J, V
Flour, Wood	-1/8	16-36	30A	0.4	A1-A2	I	I	III	H, P, Q, V
Flour Calcine	-100M	75-85	30A	0.7	A1-A2-A3	I	I	III
Flue Dust, Basic Oxygen Furnace	-1/64	45-60	30B	3.5	C4	II	I	III	F, G
Flue Dust, Blast Furnace	-1/64	110-125	30B	3.5	C4	II	I	III
Flue Dust, Boiler H, dry	-1/64	30-45	30B	2.0	C4	II	I	III	F, G
Fluorspar (Calcium Fluoride)	-1/8	80-100	30B	2.0	B4	II	I	III
Fluorspar, lumps	-7	90-110	30B	2.0	B4	II	I	III
Flyash	-1/64	30-45	30B	2.0	C4	II	I	III	G
Flyash, Coal	-1/64	30-60	30B	2.0	C4	II	I	III	G
Flyash, Fluidized Bed	-1/64	60-90	30B	3.0	C4	II	I	III
Foundry Sand, dry	-1/8	90-110	15	1.7	C4	III	I	III
Fuller’s Earth, Oil Filter, burned	-1/8	40	15	2.0	C4	III	I	II
Fuller’s Earth, Oil Filter, raw	-1/8	35-40	30B	2.0	B4	II	I	II
Fuller’s Earth, Oil Filter, spent	35% oil	60-65	15	2.0	D4	III	I	III	I, O
Galena (Lead Sulfide)	-100M	240-260	30A	1.2	B4	II	I	II	G, L, P
Gelatin, granulated	-1/8	32	30A	0.8	A2	I	I	III	J, K, M, V
Gilsonite	-1/2	37	30B	1.5	D4	II	II	III	H, L
Glass, Batch	-1/2	80-100	15	2.5	D4	III	I	III
Glue, ground	-1/8	40	30A	1.7	B4	II	I	IV	M
Glue, pearl	-1/2	40	30A	0.5	A1-A2-A3	I	I	III	M
Glue, veg., powdered	-1/64	40	30A	0.6	A1-A2-A3	I	I	IV	M
Gluten Cake, wet	-1/2	30-50	30A	2.5	A2	I	I	IV
Gluten, Meal, dry	-1/8	30-40	30A	0.6	A2	I	I	III	J
Granite, broken	+1/2	95-100	15	2.5	D4	III	I	II
Granite, fine	-1/2	80-90	15	2.5	C4	III	I	II
Grape Pomace	-3	15-20	30A	1.4	B4	I	I	IV	M, Q, V
Graphite Flakes	-1/8	40	45	0.5	A1-A2-A3	I	I	II	F, J, V
Graphite Flour	-100M	28	30A	0.5	A1-A2-A3	I	I	III	F, G, J, V
Graphite Ore	+1/2	65-75	30A	1.0	B4	I	I	III	F
Grass Seed	-1/8	10-32	30A	0.4	A2	I	I	III	H, Q
Guano, dry	-1/2	70	30A	2.0	C1-C2	I	I	III	•
Gypsum, calcined	-1/8	55-60	30A	1.6	B4	I	I	III	M
Gypsum, calcined, powdered	-100M	60-80	30A	2.0	B4	I	I	III	M
Gypsum, raw	-3	70-80	30A	2.0	B4	I	I	II
Green Vitriol (Ferrous Sulfate)	-1/2	50-75	30B	1.0	B4	II	I	II

Bulk Material	Maximum Particle Size (in.)	Bulk Density (lbs/ft³)	% Trough Loading	Material Factor (MF)	Component /Bearing Series	Abrasive- ness	Corrosive- ness	Flowability	Special Notes
Hay, chopped	-1/2	8-12	30A	1.6	B1-B2	I	I	III	D, Q, •
Hexanedioic Acid (Adipic Acid)	-100M	45	30A	0.5	D3	I	I	III	H, M
Hominy	-1/2	35-50	30A	0.4	A1-A2-A3	I	I	II	J, V
Hops, spent, dry	-3	35	30A	1.0	B1-B2-B3	I	I	III	V
Hops, spent, wet	-3	50-55	30A	1.5	D3	I	II	IV	N, V
Hydroxybenzoic Acid (Salicylic Acid)	-1/8	29	15	0.6	C4	III	I	III	M
Ice, crushed	-3	35-45	30A	0.4	B1-B2	I	I	III	K, V
Ice, cubed	-3	33-35	30A	0.4	A2	I	I	III	K, V
Ice, flaked	-1/2	40-45	30A	0.6	A2	I	I	III	K, V, •
Ice, shells	-3	33-35	30A	0.4	A2	I	I	IV	K, V
Ilmenite Ore	-3	140-160	15	2.0	C4	III	I	III
Iron Ore	-1/64	120-180	15	2.2	C4	III	I	III
Iron Oxide Pigment	-100M	25	30B	1.0	A1-A2-A3	II	I	III	F, G, J
Iron Oxide, Millscale	-1/2	75	30B	1.6	B4	I	I	III
Kafir (Corn)	-1/2	40-45	30A	0.5	C4	I	I	II	V
Kaolin Clay	-3	63	30A	2.0	B4	I	I	II
Kaolin Talc	-1/64	42-56	30A	2.0	B4	I	I	III	F, G, J
Lactose	-1/64	32	30A	0.6	A2	I	I	III	H, J, M, P
Lead Arsenate	-1/64	72	30A	1.4	A1-A2-A3	I	I	III	G, L
Lead Arsenite	-1/64	72	30A	1.4	A1-A2-A3	I	I	III	G, L
Lead Carbonate	-1/64	240-260	30A	1.0	B4	I	I	III	G, L
Lead Ore	-1/8	200-270	30A	1.4	C4	I	I	III	L
Lead Ore	-1/2	180-230	30B	1.4	C4	II	I	III	L
Lead Oxide, Red Lead	-100M	30-150	30A	1.2	B4	II	I	III	G, J, L
Lead Oxide, Red Lead	-200M	30-180	30A	1.2	B4	II	I	III	F, G, J, L
Lead Sulfide	-100M	240-260	30A	1.0	B4	II	I	III	G, L, P
Lignite, air-dried	-3	37-45	30A	1.0	B4	I	II	III	H
Lime, hydrated	-1/8	40	30A	0.8	B4	I	I	III	F, G, P, V
Lime, hydrated, pulverized	-1/64	32-40	30A	0.6	A1-A2	I	I	III	F, G, P, V
Lime, unslaked	-1/8	60	30A	0.6	A2	I	I	III	P, V
Lime, pebble, unslaked	-1/2	53-56	45	2.0	B1	I	I	II	C, M
Limestone, agricultural	-1/8	68	30A	2.0	B4	II	I	III
Limestone, crushed	+1/2	85-90	30B	2.0	B4	II	I	III
Limestone, dust	-1/64	55-95	30B	1.6-2.0	B4	II	I	IV	G, Q
Limonite, ore	-1/2	120	15	1.7	C4	III	I	IV
Lindane (Benzene Hexachloride)	-100M	56	30A	0.6	A1-A2-A3	I	I	IV	L
Litharge (Lead Oxide)	-100M	30-150	30A	1.2	B4	II	I	III	G, J, L
Lithopone	-200M	45-50	30A	1.0	A1-A2	I	I	III	G, L

Bulk Material	Maximum Particle Size (in.)	Bulk Density (lbs/ft³)	% Trough Loading	Material Factor (MF)	Component /Bearing Series	Abrasive- ness	Corrosive- ness	Flowability	Special Notes
Magnesium Chloride (Magnesite)	-1/2	33	30A	1.0	A1-A2	I	I	IV
Magnesium Sulfate (Epsom Salts)	-1/64	40-50	30A	0.8	A1-A2-A3	I	I	III	M
Maize	-1/8	40-45	45	0.4	A1-A2-A3	I	I	I	H
Malt, dry, ground	-1/8	20-30	30A	0.5	A1-A2-A3	I	I	III	H, J, L, Q, V
Malt, dry, whole	-1/2	20-30	30A	0.5	A1-A2-A3	I	I	III	H, V
Malt, wet or green	-1/2	60-65	30A	0.4	A1-A2-A3	I	I	III
Malt, meal	-1/8	36-40	30A	0.4	A1-A2-A3	I	I	II	J, V
Malt, sprouts	-1/2	13-15	30A	0.4	A1-A2-A3	I	I	III	J, V
Manganese Dioxide	-100M	70-85	30A	1.5	B1-B2	I	II	III	H, L, •
Manganese Ore	+1/2	125-140	15	2.0	C4	III	I	III
Manganese Oxide	-100M	120	30B	2.0	B4	II	I	III
Manganese Sulfate	-1/2	70	15	2.4	C4	III	I	III
Marble, crushed	-1/8	80-95	15	2.0	C4	III	I	III
Marl (Clay)	+ 1/2	80	30B	1.6	B4	II	I	III
Meat, ground	-1/4	50-55	30A	1.5	B1-B2	I	II	IV	C, K, P, •
Meat, scraps, with bone	Scraps	40	30B	1.5	D4	II	I	IV	C, N, •
Mica, flakes	-1/8	17-22	30B	1.0	B4	II	I	I	G, N, Q, V
Mica, ground	-1/8	13-15	30B	0.9	B4	II	I	III	V
Mica, pulverized	-100M	13-15	30B	1.0	B4	II	I	III	G, V
Milk, dried, flakes	-1/8	5-6	30A	0.4	A2	I	I	III	H, J, M, Q
Milk, dried, whole	-100M	20	30A	0.4	A2	I	I	III	G, J, M P
Milk, malted	-1/64	27-30	30A	0.9	A2	I	I	IV	G, H, J, P
Milk, powdered	-1/8	20-45	45	0.5	A2	I	I	II	G, H, J
Milk, powdered, whole	-1/8	20-36	30A	0.5	A2	I	I	III	J, M, P
Milk Sugar (Lactose)	-100M	32	30A	0.8	A2	I	I	III	H, J, P
Mill Scale (Steel)	Irregular	120-125	30B	3.0	C4	II	II	IV
Milo, ground	-1/8	32-36	30A	0.5	A1-A2-A3	I	I	II	V
Milo, maize (Kafir)	-1/8	40-45	45	0.4	A1-A2-A3	I	I	I	H, V
Molybdenite Powder	-1/8	107	30A	1.5	B4	II	I	II
Monosodium Phosphate	-1/8	50	30B	0.6	B4	II	I	III
Mortar, wet	Irregular	150	30B	3.0	C4	II	II	IV
Muriate of Potash	-1/8	77	15	1.8	D4	III	III	II
Mustard Seed	-1/8	45	45	0.4	A1-A2-A3	I	I	I	H, V
Naphtalene Flakes	-1/8	45	30A	0.7	A1-A2-A3	I	I	III	V
Nicotinic Acid (Niacin)	-1/64	35	30A	0.8	B4	I	I	III	J
Oakite (Trisodium Phosphate)	-1/8	60	30B	1.7	B4	II	I	II
Oats	-1/2	26	45	0.6	A1-A2-A3	I	I	Ii	G, H, V
Oats, crimped	-1/2	19-26	30A	0.5	A1-A2-A3	I	I	III	V
Oats, crushed	-1/8	22	30A	0.6	A1-A2-A3	I	I	IV	H, Q, V
Oats, flour	-100M	35	30A	0.5	A1-A2-A3	I	I	III	V
Oats, hulls	-1/8	8-12	30A	0.5	A1-A2-A3	I	I	III	H, Q, V
Oats, rolled	-1/2	19-24	30A	0.6	A1-A2-A3	I	I	III	H, Q, V
Oleo (Margarine)	Irregular	59	30A	0.4	B1-B2	I	I	IV	C, E, J, O, P
Orange Peels, dry	Irregular	15	30A	1.5	B1-B2	I	I	IV
Oxalic Acid, Crystal—Ethane Diacid Crystal	-1/8	60	30A	1.0	A1-A2	I	III	III	K, M
Oyster Shells, ground	-1/2	50-60	30B	2.0	B4	II	II	III
Oyster Shells, whole	-3	80	30B	2.5	B4	II	II	III	N

Bulk Material	Maximum Particle Size (in.)	Bulk Density (lbs/ft³)	% Trough Loading	Material Factor (MF)	Component /Bearing Series	Abrasive- ness	Corrosive- ness	Flowability	Special Notes
Paper Pulp, stock	5%	62	30A	1.5	B1-B2	I	I	IV	N
Paper Pulp, stock	6-15%	60-62	30A	1.7	B1-B2	I	I	IV	N
Paraffin Cake, broken	-1/2	45	30A	0.6	A1-A2	I	I	IV	E
Peanuts, meal	-1/8	30	30A	0.6	A2	I	I	III	J, V
Peanuts, clean, shelled	-3	15-20	30A	0.6	B1-B2	I	I	III	K
Peanuts, raw, uncleaned, unshelled	-3	15-20	30B	0.7	C4	I	I	III	K
Peanuts, shelled	-1/2	35-45	30A	0.4	A2	I	I	III	K, V
Peas, dried	-1/2	45-50	45	0.5	A1-A2-A3	I	I	I	H, K, V
Perlite, expanded	-1/2	8-12	30B	0.6	B4	II	I	III
Phosphate Disodium	-1/8	50-60	30A	0.9	A1-A2	I	I	III
Phosphate Acid, Fertilizer	-1/8	60	45	1.4	B1-B2	I	II	II
Phosphate Rock, broken	+ 1/2	75-85	30B	2.1	B2	II	I	III
Phosphate Rock, pulverized	-1/8	60	30B	1.7	B4	II	I	III
Phosphate of Soda (Disodium Phosphate)	-1/64	25-31	30A	0.5	C4	I	I	III	K
Phosphate Sand, granular	-1/8	90-100	15	2.0	C4	III	I	III
Phosphoprotein (Casein)	-1/8	36	30B	1.6	B4	II	I	II
Phosphoric Acid (Phosphate Acid)	-100M	60	30A	1.4	A2	I	I	II
Plaster of Paris (Gypsum)	-200M	60-80	30B	0.9	B4	II	I	III	G
Polyethylene, pellets	-1/8	35	30A	0.4	A2	I	I	III	J, K
Polystyrene Beads	-1/8	40	30A	0.4	A2	I	I	II	J, K, V
Polyvinyl Chloride, pellets	Irregular	20-30	30A	0.6	A2	I	II	IV	E, J, K
Polyvinyl Chloride, powder	-100M	20-30	30A	1.0	A1-A2-A3	I	II	IV	E
Potash, dry (Muriate of Potash)	-1/8	70	15	2.0	D4	III	III	III
Potash, mine run (Muriate of Potash)	+1/2	75	15	2.2	D4	III	III	III
Potassium Carbonate	-1/8	51	30B	1.0	B4	II	II	III
Potassium Chloride, pellets	-1/2	120-130	30A	1.6	C4	I	II	II	M
Potassium Nitrate	-1/2	76	30B	1.2	D4	II	II	I	H, V
Potassium Nitrate	-1/8	80	30B	1.2	D4	II	II	II	H, V
Potassium Sulfate	-1/8	42-48	30B	1.0	B4	II	I	IV	P
Potato, flour	-200M	48	30A	0.5	A1-A2	I	I	III	G, H, J, V
Pumice	-1/8	42-48	30B	1.6	C4	II	I	IV
Pyrite, pellets	-1/2	120-130	30B	2.0	C4	II	I	II
Quartz	-1/2	80-90	15	2.5	C4	III	I	II
Quartz	-100M	70-80	15	1.7	C4	III	I	II
Quicklime (Lime, unslaked)	-1/8	60	30A	0.6	A2	I	I	III	P
Red Lead (Lead Oxide)	-100M	30-150	30A	1.2	B4	II	I	III	G, J, L
Rice, hulled	-1/2	45-49	45	0.4	A1-A2-A3	I	I	II	J, V
Rice, hulls	-1/8	20-21	30A	0.4	A1-A2-A3	I	I	III	H, Q
Rice, polished	-1/2	30	45	0.4	A1-A2-A3	I	I	I	J, V
Rice, rough	-1/2	32-36	30A	0.6	A1-A2-A3	I	I	III	H, V
Rice Bran	-1/8	20	30A	0.4	A1-A2-A3	I	I	III	H, Q, V
Rice Grits	-1/8	42-45	30A	0.4	A1-A2-A3	I	I	III	J, V
Rosin	-1/2	65-68	30A	1.5	A1-A2-A3	I	I	IV	K, V
Rubber, pelleted	-3	50-55	30A	1.5	B1-B2-B3	I	I	IV
Rubber, reclaimed, ground	-1/2	23-50	30A	0.8	A1-A2-A3	I	I	IV	V
Rye	-1/8	42-48	45	0.4	A1-A2-A3	I	I	I	H, V
Rye, bran	-1/8	15-20	30A	0.4	A1-A2-A3	I	I	III	Q, V
Rye, feed	-1/8	33	30A	0.5	A1-A2-A3	I	I	III	H, V
Rye, meal	-1/8	35-40	30A	0.5	A1-A2-A3	I	I	III	V
Rye, middlings	-1/8	42	30A	0.5	A1-A2	I	I	III	V
Rye, shorts	-1/2	32-33	30A	0.5	B1-B2	I	I	III	V

Bulk Material	Maximum Particle Size (in.)	Bulk Density (lbs/ft³)	% Trough Loading	Material Factor (MF)	Component /Bearing Series	Abrasive- ness	Corrosive- ness	Flowability	Special Notes
Safflower, cake	-3	50	30B	0.6	B4	II	I	II
Safflower, meal	-1/8	50	30A	0.6	A1-A2-A3	I	I	III	V
Safflower Seed (Safflower)	-1/8	45	45	0.4	A1-A2-A3	I	I	I	H, V
Sal Ammoniac (Ammonium Chloride)	-100M	45-52	30A	0.7	C1-C2	I	III	IV	A, L
Salicylic Acid	-1/8	29	15	0.6	C4	III	I	III	M
Salt, dry coarse	-1/2	45-60	30B	1.0	C4	II	II	III	M, V
Salt, dry fine	-1/8	70-80	30B	1.7	C4	II	II	III	M, V
Salt Cake, dry, coarse (Sodium Sulfate)	-1/8	85	30B	2.1	C4	II	II	III	M
Salt Cake, dry, pulverized (Sodium Sulfate)	-1/8	65-85	30B	1.7	C4	II	II	III	M
Saltpeter (Potassium Nitrate)	-1/2	76	30B	1.2	C4	II	II	I	H
Sand, Dry Bank, damp	-1/8	110-130	15	2.8	C4	III	I	IV
Sand, Dry Bank, dry	-1/8	90-110	15	1.7	C4	III	I	III
Sand, Foundry, prepared	-1/8	90	15	3.0	C4	III	I	III
Sand, Foundry, shakeout	-3	90-100	15	3.0	D4	III	I	III	R
Sand, Silica, dry	-1/8	90-100	15	2.0	C4	III	I	II
Sand, Silica, resin-coated	-1/8	104	15	2.0	C4	III	I	II
Sand, Zircon, resin-coated	-100M	115	15	2.3	C4	III	I	II
Sawdust, dry	-1/8	10-13	30A	1.4	A1-A2-A3	I	I	IV	M, P
Sea-Coal	-1/8	65	30B	1.0	B4	II	I	III
Seed, Alfalfa	-1/8	10-15	45	0.4	A1-A2-A3	I	I	I	H
Seed, Clover	-1/8	45-48	45	0.4	A1-A2-A3	I	I	II	H
Seed, Corn	-1/2	45	45	0.4	A1-A2-A3	I	I	II	H, J, K
Seed, Grass	-1/8	10-32	30A	0.4	A2	I	I	III	H, Q
Seed, Mustard	-1/8	45	45	0.4	A1-A2-A3	I	I	I	H, V
Seed, Safflower	-1/8	45	45	0.4	A1-A2-A3	I	I	I	H, V
Seed, Sesame	-1/8	27-41	30B	0.6	B4	II	I	II	V
Seed, Sorghum (Milo or Kafir)	-1/8	32-36	30A	0.5	A1-A2-A3	I	I	II
Seed, Sunflower	-1/2	19-38	45	0.5	A1-A2-A3	I	I	I	V
Seed, Timothy	-1/8	36	30A	0.6	B2	I	I	III	H, Q, V
Sesame Seed	-1/8	27-41	30B	0.6	B4	II	I	II	V
Shale, crushed	-1/2	85-90	30B	2.0	B4	ll	I	III
Shellac, powdered or granulated	-1/8	31	30A	0.6	A2	I	I	III	J, V
Silica Flour	-1/64	80	30B	1.5	B4	II	I	IV
Silica Gel (Silicic Acid)	-3	45	15	2.0	C4	III	I	III	C, E, K, M
Silicon Dioxide (Quartz)	-1/2	80-90	15	2.5	C4	III	I	II
Slag, Blast Furnace, crushed	-3	130-180	15	2.4	D4	III	I	III	Q
Slag, Furnace, granular, dry	-1/2	60-65	15	2.2	A1-A2-A3	III	I	III
Slaked Lime (Lime, hydrated)	-1/8	40	30A	0.8	B4	I	I	III	F, G, P
Slate, crushed	-1/2	80-90	30B	2.0	B4	II	I	III
Slate, ground	-1/8	82-85	30B	1.6	B4	II	I	III
Sludge, Sewage, dry	Irregular	40-50	30B	0.8	D4	II	II	IV	O
Sludge, Sewage, dry, ground	-1/8	45-55	30B	0.8	D4	II	II	IV
Snow, fresh	-1/8	5-12	30A	0.4	A2	I	I	IV
Snow, packed	+1/2	15-35	30A	0.8	B1	I	I	IV
Soap, beads or granules	-1/8	15-35	30A	0.6	A1-A2-A3	I	I	III	K, M
Soap, chips	-1/2	15-25	30A	0.6	A1-A2-A3	I	I	III	K, M
Soap Detergent	-1/8	15-50	30A	0.8	A1-A2-A3	I	I	III	A, K
Soap Flakes	-1/8	5-15	30A	0.6	A1-A2-A3	I	I	III	K, M, P, Q
Soap Powder	-1/8	20-30	30A	0.9	A1-A2-A3	I	I	II	P
Bulk Material	Maximum Particle Size (in.)	Bulk Density (lbs/ft³)	% Trough Loading	Material Factor (MF)	Component /Bearing Series	Abrasive- ness	Corrosive- ness	Flowability	Special Notes
Soapstone (Talc)	-200M	40-50	30A	2.0	A1-A2-A3	I	I	IV	G, P, Q
Soda Ash, heavy (Sodium Carbonate)	-1/8	55-65	30B	1.0	B4	II	I	III
Soda Ash, light (Sodium Carbonate)	-1/64	20-35	30B	0.8	B4	II	I	III	G, Q, V
Sodium Aluminate, ground	-1/8	72	30B	1.0	B4	II	I	III
Sodium Aluminum Sulphate	-100M	75	30B	1.0	B4	II	I	III	•
Sodium Bicarbonate (Baking Soda)	-100M	40-55	45	0.6	A2	I	I	II
Sodium Nitrate	-3	70-80	45	1.2	B1-B2	I	III	II	H
Sodium Phosphate	-1/8	50-60	30A	0.9	A1-A2	I	I	III
Sodium Sulfate, dry, coarse	-1/8	85	30B	2.1	C4	II	II	III	M
Sodium Sulfate, dry, pulverized	-1/8	65-85	30B	1.7	C4	II	II	III	M
Sodium Sulfite	-1/8	96	30B	1.5	B4	II	I	IV	P
Sorghum Seed (Milo or Kafir)	-1/8	32-36	30A	0.5	A1-A2-A3	I	I	II
Soybean, dust	-1/64	25-35	30A	2.0	A1-A2-A3	I	I	III	G, H
Soybean, cake	-1/2	40-43	30A	1.0	A1-A2-A3	I	I	III	O, V
Soybean, cracked	-1/2	30-40	30B	0.6	B4	II	I	III	H, O, V
Soybean, flour	-1/64	25-35	30A	1.0	A1-A2-A3	I	I	III	G, H, V
Soybean, meal, cold	-1/8	35-45	30A	0.6	A1-A2-A3	I	I	III	V
Soybean, meal, hot	-1/8	40	30A	0.6	D3	I	II	III
Soybean, whole	-1/2	45-50	30B	1.0	B4	II	I	II	H, O
Soybean Flakes, raw	-1/2	15-35	30A	0.8	A1-A2-A3	I	I	III	Q, V
Soybean Flakes, spent	-1/4	18-20	30A	0.6	A2	I	I	II	Q, V
Starch	-1/64	25-50	45	1.0	A1-A2-A3	I	I	I	G, H, V, •
Steel Turnings (Chips), crushed	-3	100-150	30B	3.0	D4	II	I	IV	N, O
Stibium (Antimony)	-100M	•	30A	1.6	B4	II	I	II	•
Sugar, Powdered	-100M	50-60	30A	0.8	A2	I	I	III	H, J, P, V, •
Sugar, raw, cane	-1/8	55-65	30A	1.5	A2	I	I	III	H, J, P
Sugar, refined, granulated, dry	-1/8	50-55	30A	1.0-1.2	A2	I	I	III	H, J, M, V
Sugar, refined, granulated, wet	-1/2	55-65	30A	1.4-2.0	A2	I	I	III	P
Sugar Beet, pulp, dry	-1/2	12-15	30B	0.9	B4	II	I	II	H, •
Sugar Beet, pulp, wet	-1/2	25-45	30A	1.2	A1-A2-A3	I	I	III	H, P
Sulphur, crushed	-1/2	50-60	30A	0.8	A1-A2	I	I	III	H
Sulphur, ground	-1/64	50-60	30A	0.6	A1-A2	I	I	II	G, H
Sulphur, lumps	-3	80-85	30A	0.8	D4	I	I	III	H
Sunflower Seed	-1/2	19-38	45	0.5	A1-A2-A3	I	I	I	V

Bulk Material	Maximum Particle Size (in.)	Bulk Density (lbs/ft³)	% Trough Loading	Material Factor (MF)	Component /Bearing Series	Abrasive- ness	Corrosive- ness	Flowability	Special Notes
Taconite, pellets	+1/2	116-130	15	2.0	D4	III	I	II	K
Talc	-1/2	80-90	30B	0.9	B4	II	I	III
Talc, powder	-200M	50-60	30B	0.8	B4	II	I	III	G, P, V
Tanbark, ground	-1/8	55	30A	0.7	A1-A2-A3	I	I	IV	•
Timothy Seed	-1/8	36	30A	0.6	B2	I	I	III	H, Q, V
Titanium Dioxide (llmenite)	-3	140-160	15	2.0	C4	III	I	III
Tobacco, scraps	-3	15-25	30A	0.8	B1-B2	I	I	IV	Q
Tobacco, snuff	-1/8	30	30A	0.9	A1-A2-A3	I	I	IV	H, G, K, V
Tricalcium Phosphate	-1/64	40-50	30A	1.6	A1-A2	I	I	IV
Triple Super Phosphate	-1/8	50-55	30B	2.0	C4	II	III	III	L
Trisodium Phosphate	-1/2	60	30B	1.7	B4	II	I	III
Trisodium Phosphate, granular	-1/8	60	30B	1.7	B4	II	I	III
Trisodium Phosphate, pulverized	-1/64	50	30B	1.6	B4	II	I	III	V
Tung Nuts	-3	25-30	30A	0.7	B1-B2	I	I	I	V
Tung Nut Meats, crushed	-3	28	30A	0.8	B1-B2	I	I	II	O, V
Uintaite (Bentonite)	-100M	50-60	45	0.7	B4	I	I	II	G, P, Q
Urea Prills, Coated	-1/8	43-46	45	1.2	A1-A2-A3	I	I	II
Vermiculite, expanded	-1/2	16	30A	0.5	A1-A2	I	I	III	Q
Vermiculite, ore	-3	80	30B	1.0	B4	II	I	III
Vetch	-1/8	48	30B	0.4	A1-A2-A3	II	I	I	H, V
Vulcanite (Ebonite)	-1/2	63-70	30A	0.8	A1-A2-A3	I	I	III
Walnut Shells, crushed	-1/8	35-45	30B	1.0	B4	II	I	III	V
Wheat	-1/2	45-48	45	0.4	A1-A2-A3	I	I	II	H, V
Wheat, cracked	-1/8	40-45	45	0.4	A1-A2-A3	I	I	II	H, V
Wheat, germ	-1/8	18-28	45	0.4	A1-A2-A3	I	I	II	V
White Lead, dry	-1/64	75-100	30B	1.0	B4	II	I	III	G, L, V
Wood Bark	+1/2	8-16	30B	1.5	B1-B2	I	I	IV	N, Q
Wood Chips, screened	-3	10-30	30A	0.6	B1-B2	I	I	IV	N, Q
Wood Flour	-1/8	16-36	30A	0.4	A1-A2	I	I	III	H, P, Q, V
Zinc Concentrate Residue	-1/8	75-80	15	1.0	C4	III	I	III
Zinc Oxide, heavy	-100M	30-35	30A	1.0	A1-A2	I	I	IV	G, P
Zinc Oxide, light	-100M	10-15	30A	1.0	A1-A2	I	I	IV	G, P, Q, V










Calc.:				R =

			Selection:
Cut Flight Capacity Factor, CF2 =
Cut & Folded Flight Capacity Factor, CF2 =
Ribbon Capacity Factor, CF2 =
Mixing Paddle Capacity Factor, CF2 =

	Paddle FactorCF2:
	CF2	calc





(PER CEMA )

CONVEYOR COMPONENT TORSIONAL RATINGS:
DRIVE DATA				SHAFT DATA
1.	Motor Horsepower(HP) :	HP		8.	Shaft Diameter (Ds):		in
2.	Conveyor Speed(rpm) :	rpm		9.	Hole Diameter (d) :		in	( / 32 )
BOLT DATA				10.	Yield Stress (Sy) :		psi
3.	Bolt Diameter (Db) :	in		11.	Safe Stress (Ss) :		psi
Bushing I.D. (Dbsh) :	in		PIPE DATA
Number of Bolts (n) :			12.	Pipe O.D. (OD) :		in
Yield Stress (Sy) :	psi		13.	Pipe I.D. (ID) :		in
Safe Stress (Ss) :	psi		14.	Yield Stress (Sy) :		psi
				15.	Safe Stress (Ss) :		psi

CALCULATIONS :

BOLTS IN SHEAR:			PIPE TORQUE RATING:
A2 =	pi x Db^2/4		Z =	pi(OD^4-ID^4)/16/OD
=		in^2	=		in^3
T =	n 2 (A2) S Dbsh /2		T =	S Z

BOLTS IN BEARING:			DRIVE SHAFT TORQUE RATING:
			Torsion Only (max. distortion energy equation):
A1 =	(OD – Dbsh) x Db
=		in^2	D =	(321000 x 1.0 x HP / S / rpm)^(1/3)
			=		in. (min.) @ rated stress
r =	Dbsh/2 + ( OD – Dbsh ) / 4		=		in. (min.) @ yield stress
=		in.		CEMA Method
			Z =	pi x D^3/16 – dD^2/6 – d^3/6
T =	n (A1) S r		T =	S Z

Torsion Mode	Torque Rating	Yield Torque	Full Motor Torque :
	(inlb)	(inlb)
Bolts In Shear:			63025 x HP
Bolts & Pipe In Bearing:			rpm
Pipe:
Drive Shaft:			inlb

Horizontal Screw Conveyor Calculator

Capacity, Horsepower, And RPM Calculation:

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CONVEYOR COMPONENT TORSIONAL RATINGS:

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					exact :	2.03303699192
						-1.44625162034


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		avg % diff.