file:///tt/file_convert/5ad963c87f8b9a9d5c8e8964/document.xls, Specifier, Page 1 of 9 05/07/2023 10:30:59

Rulmeca Motorized Pulley Power Calculation Program - Standard Version 7.23Specifier Sheet and Recommendation Summary

05/07/23Date

6508-B Windmill Way Wilmington, NC 28405 ### Ph 910-794-9294 ### Fax 910-794-9296 Head

Telephone Telefax e-mail www.rulmecacorp.com Head

© Copyright - Rulmeca Corp. Return Run

Tail

Project Name Conveyor Reference belt width

Standard Loading Conditions: 18 in

Conveyor Length (ft) 100 REQUIRED POWER: 7.3 HP 24 in

Tonnage Rate (tons/hour) 500 30 in

Belt Speed (fpm) 300 BELT PULL SUMMARY: Force (lbs) 36 in

Material Lift Height (ft) 0.0 Standard Loading Belt Pull 731 42 in

Ambient temperature (°F) Min -10 Extra pull for Hopper (if any) 0 ###

Ambient temperature (°F) Max 100 Extra pull for Slider Bed (if any) 0 Limestone, pulv.,dry, 0.128Initial Velocity of Material (fpm) 0 Extra pull for Diverter or Tripper (if any) 0 kmNumber of Belt Cleaners 1 TOTAL Required Belt Pull (Te): 731 Ashes, coal, dry, 0.057

Number of Return Belt Scrapers 0 Bauxite, ground, 0.188

Length of Skirt Zone (ft) 12 RECOMMENDED OPTIONS: Cement, Portland, Dry 0.212Depth of Mat'l in skirt zone (in) 3 Cement clinker, 0.122

Number of Non-driven Pulleys 4 Clay, ceramic, dry fines,0.092Coal, bitum. mined, 0.075

Elev. Above Sea Level (ft) 3300 ft SPECIAL NOTES: Cullet (broken glass), 0.084

Mat'l, friction coeff Limestone, pulv.,dry, 0.128 Minimum allowable belt width for lump size is 12 in Grains,wheat,corn,etc, 0.043

Bulk Density (pcf) Limestone, crushed, 90 pcf Minimum Acceptable Diameter is 10 in. * Gravel, bank run, 0.115

Size Consist Avg is 50% Max Lump Size Iron Ore, 0.276

Max. Lump Size (in) 2 *A smaller pulley diameter may cause belt carcass or fastener damage. Limestone, pulv.,dry, 0.128

Material Surcharge Angle 25 deg. RECOMMENDED "SINGLE DRIVE" MOTORIZED PULLEY: Phosphate rock, dry, 0.109

Belt Width 36 in Power: 7.5HP Models Available: Salt, dry fine, 0.081

Belt Carcass Type Fabric Belt Speed: 300 FPM 220, 320, 400, 500, 630Idler Roll diameter 5 in Face Width: 37.4 in. Wood chips, 0.010

CEMA Type CTroughing Idler Spacing 4 ft ######

Angle of Wrap** 180 degrees RECOMMENDED "DUAL DRIVE" MOTORIZED PULLEY: ######

Type of Lagging Full Lagging Power: 5.5 HP/each Models Available: Type of Dual Drives###

Type of Take-up Manual Belt Speed: 300 FPM 220, 320, 400, 500Type of Belt 2 ply, 225 piw Face Width: 37.4 in.Drive Location HeadMaterial Flow Elevating or Horizontal Power savings - 1 shift and 3 shift per day: nest on carry side

Condition of Idlers & Pulleys well maintained (Motorized Pulley compared to exposed motor, gearbox, V-belt conveyor drives) nest on return side

Type of Dual Drive, if any none Save: 1180 Kw-Hrs/Yr, 1 shift/day or 3541 Kw-Hrs/Yr, 3 shifts/day well maintained** This parameter is for either single or dual drive arrangement. Save: $94 /Yr, 1 shift/day or $283 /Yr, 3 shifts/day @ $0.08/Kw-Hr need maintenance###### Theoretical Belt Strength (based on piw and belt width)Belt Strength (lbs)= belt width (in) x piw

Special Loading Conditions: Belt Width=1. For hopper feeder specify opening dimensions below. piw =2. For slider bed, specify bed length & type of bed mat'l below. Sidewall & cleat height (in) 0 Belt Strength=3. If belt is driven on return run, specify drive pulley location. Thickness of sidewall (in) 0 ###4. If belt has cleats and/or sidewalls show dimensions below. Distance between cleats (in) 0 180 degrees5. If conveyor has a tripper, define tripper below. Thickness of cleats (in) 0 180 degrees6. If conveyor has diverter(s), define below. Extra Sidewall & Cleat Wt (incl above) 0 200 degrees

210 degrees Hopper opening width (in) 220 degrees Hopper opening length (in) Tripper length (ft) 0 240 degrees Number of Hopper Openings Material lift height on tripper (ft) 0 360 degrees (dual)

No. of belt cleaners on tripper 0 420 degrees (dual) Slider Bed Length (ft) Length of tripper skirt zone (ft) 0 Type of Slider Bed Material None Depth of material in skirt zone (in) 0 Slider Bed Frictional Coefficient 0 No. of non-driven pulleys on tripper 0

Estimated belt tension, Te (lbs) 0 Estimated factor, Ky 0.03

Conveyor Length, tail to drive snub (ft) Bulk Density Chart Imperial Height, top of tail to bottom of drive (ft) Ashes, coal, wet, 50

No. of diverters that work simultaneously Ashes, coal, wet, 50Bagasse, 10

4. Sidewall & Cleated Belt Parameters:

1. Hopper Feeder Design Parameters5. Tripper Design Parameters

2. Slider Bed Design Parameters

3. Drive Pulley Location ("return run" drive only)

6. Material Diverter (Belt Plow)

Go to Design Parameters

Go to Design Parameters

Go to Design Parameters

Go to Trajectory Sheet

Material Surcharge Angle

Material Lift Height (ft)

Standard Loading Conditions

Initial Velocity of Material (fpm)

Depth of Material in Skirt Zone (in)

CEMA Type

REQUIRED POWER

Drive LocationMaterial Flow

1. For hopper feeder specify opening dimensions below

3. If belt is driven on return run, specify drive pulley location4. If belt has cleats and/or sidewalls show dimensions below

5. If conveyor has a tripper, define tripper below

6. If conveyor has diverter(s), define below

Type of Dual Drive (if any)

Rulmeca Motorized Pulley Power Calculation Program - Standard Version 7.23Model Selector

0 05/07/230 Date00

0 0 0 6508-B Windmill WayTelephone Telefax e-mail Wilmington, NC 28405

Ph 910-794-92940 0 Fax 910-794-9296

Project Name Conveyor Reference www.rulmecacorp.com © Copyright - Rulmeca Corp.

320MREQUIRED POWER: 7.3 HP

Select Model220M220H

BELT PULL SUMMARY: Force (lbs) 320M 320L Standard Loading Belt Pull 731 320M Extra pull for Hopper (if any) 0 320H Extra pull for Slider Bed (if any) 0 Force (lbs) Extra pull for Diverter or Tripper (if any) 0 Maximum Allowable Radial Load 4,496 TOTAL Required Belt Pull (Te): 731 Estimated Maximum Radial Load** 4,001

Selected model is appropriate for estimated radial load.0

500HRECOMMENDED OPTIONS (if any): 630M

Minimum Acceptable Diameter is 10 in. 630HSelected Diameter is 12.64 in 800MSelected diameter is appropriate for specified belt.

SPECIAL NOTES (if any): 0Minimum allowable belt width for lump size is 12 inMinimum Acceptable Diameter is 10 in. * Force (lbs)

Maximum Belt Tension (T1) 2,366 *A smaller pulley diameter may cause belt carcass or fastener damage. Allowable Fabric Belt Tension 8,100RECOMMENDED "SINGLE DRIVE" MOTORIZED PULLEY: 0

Belt Tension Calculation Summary Force (lbs)Power: 7.5HP Te, effective belt tension 731

Belt Speed: 300 FPM T2, to prevent belt/pulley slippage 585Face Width: 37.4 in. T2, to limit belt sag to 2 % 1,635

Models Available: 220, 320, 400, 500, 630 T1, maximum belt tension 2,366

**Measured at Drive A in Dual Drive, if applicable. Calculation for "Dual Drive on Carry Side" is under construction.

RECOMMENDED "DUAL DRIVE" MOTORIZED PULLEY:

Power: 5.5 HP/eachBelt Speed: 300 FPMFace Width: 37.4 in.

Models Available: 220, 320, 400, 500

Show Location of Drive on Return Run

Check Radial Load (to prevent internal damage to pulley)

Check Pulley Diameter (to prevent belt damage.)

Check Maximum Belt Tension (to prevent belt damage)

Go to Design Parameters

REQUIRED POWER

Type of Dual Drive (if any)

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Bulk Materials Belt Conveyor Drive Horsepower Calculations, Version 3.1(based on CEMA manual, 4th Edition)

6740-E Netherlands Drive Wilmington, NC 28405 Telephone: 910-794-9294

Phone Fax Telefax: 910-794-9296

Customer NameConveyor NumberConveyor Length (ft.) 100Tonnage Rate (tph) 500 Required Conveyor Drive HP = 7.3 HPBelt Speed (fpm) 300 37.4 in.Material Lift Height (ft) 0 RECOMMENDED MOTORIZED PULLEY: Avail. products:Ambient temp. (deg F) Min -10 7.5HP Model Diam.Ambient temp. (deg F) Max 100 300 FPM 0 0Initial Velocity of Material (fpm) 0 TM323 12.64"Number of Belt Cleaners 1 TM400 15.75"Number of Belt Plows 0 TM501 19.72"Length of Skirt (ft) 12 TM631 24.8"Depth of Matl in skirt zone (in) 3 0 0Number of Non-driven Pulleys 4 ALTERNATE DUAL DRIVE OPTION:Belt loaded via chute. 0 5.5 HP/each Avail. products:

300 FPM Model Diam.TM220 8.5"

Elevation (ft above sea level) 3300 TM321 12.64"Type of Material Limestone, pulv., dry TM400 15.75"Belt Width (in) 36 TM501 19.72"Belt Carcass Type Fabric 0 0Idler Roll diam (4, 5,6,or 7in) 5 0 0CEMA Type (A,B,C,D,E) C RECOMMENDED OPTIONS:Troughing Idler Spacing (ft) 4

Required Belt Pull, Te = 731 lbs SPECIAL NOTES:

Engineering Design Data:

Ai 1.8 lbs Tm 0 lbs Calculated HP to drive conveyor belt: 6.64 HPCs 0.128 Tp 78 lbs Drive pulley bearing friction: 0.21 HPH 0 ft Tpl 0 lbs BHP (Brake HP) at motor: 6.86 HP

Kt 1.59 Tsb 86 lbs Gear loss in Motorized Pulley: 0.44 HPKx 0.49 lbs/ft Ttr 0 lbs Calculated HP for Drive Pulley: 7.30 HPKy 0.035 Tx 78 lbs Derate for high elevation: 0.00 HPL 100 ft Tyb 71 lbs Derate for high temp 0 HPQ 500 tph Tyc 50 lbs Required Motorized Pulley HP: 7.30Si 4 ft Tym 194 lbs (Note: 60 Hz Motorized Pulley motors have 1.0 Service Factor)

Tac 266 lbs Tyr 21 lbsTam 43 lbs V 300 fpm Power savings for 3 shift/day, 50 week/yr operationTb 0 lbs Wb 9 lbs/ft (Motorized Pulley compared to gearmotor & V-belt drive)Tbc 180 lbs Wm 56 lbs/ft Save: 1180 Kw-Hrs/YrTe 731 lbs Save: $94/Yr (@ $0.08/Kw-Hr)

file:///tt/file_convert/5ad963c87f8b9a9d5c8e8964/document.xls, trajectory, Page 4 of 9 05/07/2023 10:31:00

Rulmeca Motorized Pulley Power Calculation Program - Standard Version 7.23Bulk Handling Trajectory Calculator and Plotter(based on CEMA 5th Edition)00 5/7/230 Date 6508-B Windmill Way0 Wilmington, NC 28405

Ph 910-794-92940 0 Fax 910-794-9296

Phone Fax www.rulmecacorp.com © Copyright - Rulmeca Corp.

Project Name 0 Conveyor Ref. 0 System Design Parameters: Belt Width 36 in

Troughing Idler Angle 35°

Diameter Pulley (in) 13.26 in

Lagging Thickness (in) 0.31 in

Belt Speed 300 fpm

Surcharge Angle 25 deg.

Tonnage Rate (TPH) 500 Material Density (pcf) 90 Belt Thickness (in) 0.75 Distance to Chute Plate (in) 24 Angle of Conv. Inclination (deg) 0 Alternate Belt Speed (fpm) 350

0

Calculated Results: Calc'd mat'l height at centerline 5 in Calc'd actual height of C.O.G.* 2 in Calc'd actual mat'l cross section 84.7 sq ft CEMA Max Allow. height at center 7 in CEMA Max Height of C.O.G.* 3 in CEMA Max Allow. cross section 152.6 sq ft

Note: This program uses actual C.O.G.* height above top of belt (based on actual cross section) to plot trajectory. Height of C.O.G. for CEMA max. allow. cross section is given for ref. only.

Design Trajectory - red line; Alternate speed - blue.

Design Cross Section - red line; CEMA max allow. - black line.

*C.O.G. = center of gravity of material, shown as ∆ and ∆

-18

-15

-12

-9 -6 -3 0 3 6 9 12 15 18

-3

0

3

6

9

Mat'l Cross Section at Pulley Face:Small Pulley (scale: inches)

-27-24-21-18-15-12-9 -6 -3 0 3 6 9 12 15 18 21 24 27 30 33 36 39

-24-21-18-15-12

-9-6-30369

121518

Material Trajectory:Small Pulley (scale: inches)

Print This SheetGo to Large Pulley Sheet

Go to Overview Sheet

Return to Specifier

Surcharge Angle (degrees)

file:///tt/file_convert/5ad963c87f8b9a9d5c8e8964/document.xls, Page 5 of 9 05/07/2023 10:31:00

Rulmeca Motorized Pulley Power Calculation Program - Standard Version 7.23 CEMA Radius (in)

Material Cross Section PlotterCEMA theta(deg)

0 5/7/23 CEMA theta (rad)0 Date sin (CEMA theta)0 cos (CEMA theta)0 6508-B Windmill Way

Wilmington, NC 284050 0 Ph 910-794-9294

Phone Fax Fax 910-794-9296 www.rulmecacorp.com

© Copyright - Rulmeca Corp.###

Reference Name 0 idler Conveyor Number 0 ###

###

System Design Parameters: ### Tonnage Rate (tph) 500 ### Belt Speed (fpm) 300 ### Bulk Density (lbs/cu ft) 90 ###

Material Surcharge Angle 25 degrees ###

Belt Width 36 in. ###

Idler Angle 35 degrees ######

######

Material Geometry in Troughing Idler: ### CEMA Max. Allow. Cross Section 1.1 sq ft ### Calculated Cross Section 0.6 sq ft ### Calc'd Xsec/CEMA Xsec 58% Material Geometry in Troughing Idler: CEMA Standard Edge Distance 2.9 in Calculated Edge Distance 6 in Calc'd Material Height at Centerline 5.4 in 0 Trapezoidal area, Ab (sq ft)

Total Area, At (sq ft) Material Geometry at Pulley Discharge: Trapezoid Edge, l (in) Calculated Cross Section 0.6 sq ft Trapezoid Edge, l1(in) Material Height at Centerline 4.4 in Trapezoid Height, j (in) Height of Center of Gravity (A1) 1.8 in Trapezoid Slant, m (in) Assumed Edge Distance 3.02 in Surcharge Arc Radius, r (in) Calculated Surcharge Angle 33 deg Horiz Proj of Slant, f (in) CEMA Max. Allow height at center 6.6 in. ### CEMA Max Height of C.O.G. 2.7 in. ### CEMA Standard Edge Distance 1.44 in ###

### Note: ### This program calculates height of actual C.O.G.* ### by assuming that actual edge distance at pulley ### face equals 1/2 of actual edge distance in troughed section. Height of C.O.G.* for CEMA maximum ### allowable cross section pulley face is given for ### reference only. ###

### * C.O.G. = center of gravity of material ###

Reco

Legend: Solid Line is CEMA Max. Allowable; Red Line is Calculated.

Legend: Solid Line is CEMA Max. Allowable; Red Line is Calculated.

-18

-15

-12

-9 -6 -3 0 3 6 9 12 15 18

-3

0

3

6

9

2.71.80

Cross Section at Pulley Face:Narrow Belt (scale: inches)

-15

-12

-9 -6 -3 0 3 6 9 12 15

-3

0

3

6

9

12

15

Cross Section at Troughing Idler:Narrow Belt (scale: inches)

Return to Specifier

Plot Wide Belt

file:///tt/file_convert/5ad963c87f8b9a9d5c8e8964/document.xls, Page 6 of 9 05/07/2023 10:31:00

Rulmeca Motorized Pulley Power Calculation Program - Standard Version 7.23 CEMA Radius (in)

Material Cross Section PlotterCEMA theta(deg)

0 5/7/23 CEMA theta (rad)0 Date sin (CEMA theta)0 cos (CEMA theta)0 6508-B Windmill Way

Wilmington, NC 284050 0 Ph 910-794-9294

Phone Fax Fax 910-794-9296 www.rulmecacorp.com

© Copyright - Rulmeca Corp.###

Reference Name 0 idler Conveyor Number 0 ###

###

System Design Parameters: ### Tonnage Rate (tph) 500 ### Belt Speed (fpm) 300 ### Bulk Density (lbs/cu ft) 90 ###

Material Surcharge Angle 25 degrees ###

Belt Width 36 in. ###

Idler Angle 35 degrees ######

######

Material Geometry in Troughing Idler: ### CEMA Max. Allow. Cross Section 1.1 sq ft ### Calculated Cross Section 0.6 sq ft ### Calc'd Xsec/CEMA Xsec 58% Material Geometry in Troughing Idler: CEMA Standard Edge Distance 2.9 in Calculated Edge Distance 6 in Calc'd Material Height at Centerline 5.4 in 0

Total Area, At (sq ft) Material Geometry at Pulley Discharge: Trapezoid Edge, l (in) Calculated Cross Section 0.6 sq ft Trapezoid Edge, l1(in) Material Height at Centerline 4.4 in Trapezoid Height, j (in) Height of Center of Gravity (A1) 1.8 in Trapezoid Slant, m (in) Assumed Edge Distance 3.02 in Surcharge Arc Radius, r (in) Calculated Surcharge Angle 33 deg Horiz Proj of Slant, f (in) CEMA Max. Allow height at center 6.6 in. ### CEMA Max Height of C.O.G. 2.7 in. ### CEMA Standard Edge Distance 1.44 in ###

### Note: ### This program calculates height of actual C.O.G.* ### by assuming that actual edge distance at pulley ### face equals 1/2 of actual edge distance in troughed section. Height of C.O.G.* for CEMA maximum ### allowable cross section pulley face is given for ### reference only. ###

### * C.O.G. = center of gravity of material ###

Reco

Legend: Solid Line is CEMA Max. Allowable; Red Line is Calculated.

Legend: Solid Line is CEMA Max. Allowable; Red Line is Calculated.

-48

-42

-36

-30

-24

-18

-12

-6 0 6 12 18 24 30 36 42 48

-6

0

6

12

18

2.71.80

Cross Section at Pulley Face: Wide Belt (scale: inches)

-42

-36

-30

-24

-18

-12

-6 0 6 12 18 24 30 36 42

-6

0

6

12

18

24

30

36

42

Cross Section at Troughing Idler:Wide Belt (scale: inches)

Return to Specifier

Plot Narrow Belt

file:///tt/file_convert/5ad963c87f8b9a9d5c8e8964/document.xls, Design Parameters, Page 7 of 9 05/07/2023 10:31:00

Rulmeca Motorized Pulley Power Calculation Program - Standard Version 7.23Design Parameter Summary

0 05/07/230 Date0 6508-B Windmill Way0 Wilmington, NC 28405

Ph 910-794-92940 0 0 Fax 910-794-9296

Telephone Telefax e-mail www.rulmecacorp.com © Copyright - Rulmeca Corp.

0 0Project Name Conveyor Reference

Power Calculation Summary Calculated power to drive conveyor belt: 6.6 HP Drive pulley bearing friction: 0.2 HP Power at motor: 6.9 HP Gear loss in motorized pulley: 0.4 HP Calculated power 7.3 HP Derate for high elevation 0.0 HP Derate for high temperature 0.0 HP Required Power for motorized pulley: 7.3 HP

Symbol Value Definition of TermsTe 731 lbs Te = effective belt tension at drive.

ang 180 degrees ang = angle of belt wrap around drive pulley(s).Cw 0.8 Cw = "wrap factor", to determine slack side tension to prevent belt slippage on drive pulley.T2 1635 lbs.

T1 2366 lbs T1 = Te + T2

T1 + T2 4001 lbs T1 + T2 = Sum of belt forces on drive pulley. NOTE: This is not a vector sum.T_L Full Lagging T_L = type of lagging specified for drive pulley(s).

Tatype Manual Tatype = type of take-up specified to apply "slack-side tension".Beltype 2 ply, 225 piw Beltype = type of belt carsass specified.

w 36 in. w = belt widthstr 8100 lbs. str = tensile strength of specified belt.

pstr 16 % pstr = percentage of available belt tensile strength used.btr 3/16 to 7/16 in. btr = thickness range of specified beltAi 1.8 lbs Ai = belt tension required to overcome frictional resistance and rotate idlers.Cs 0.128 Cs = skirtboard friction factor.H 0 ft H = vertical distance that material is lifted or lowered.

Kt 1.59 Kt = ambient temperature correction factor.Kx 0.49 lbs/ft

Ky 0.04 Ky = factor to calculate resistance of belt and resistance of load to flexure as they move over idlers.L 100 ft L = length of conveyor.Q 500 tph Q = tons per hour conveyed.Si 4 ft Si = troughing idler spacing.

Tac 266 lbs Tac = total of the tensions from conveyor accessories.Tam 43 lbs Tam = tension required to accelerate the material continuously as it is fed onto belt.Tb 0 lbs Tb = tension required to lift or lower the belt.Tbc 180 lbs Tbc = tension required to overcome belt cleaner drag.Te 731 lbs Te = effective belt tension at drive.Tm 0 lbs Tm = tension required to lift or lower conveyed material.Tp 78 lbs

Tpl 0 lbs Tpl = tension required to overcome belt plow drag.Tsb 86 lbs Tsb = tension required to overcome skirtboard drag.Ttr 0 lbs Ttr = tension required to overcome special loading condition(s.)Tx 78 lbs Tx = tension required to overcome carrying and return idler friction.

Tyb 71 lbs Tyb = total of tensions due to resistance of belt to flexure as it rides over carrying and return idlers.Tyc 50 lbs Tyc = tension due to resistance of belt to flexure as it rides over carrying idlers.Tym 194 lbs Tym = tension due to resistance of material to flexure as it rides over carrying idlers.Tyr 21 lbs Tyr = tension due to resistance of belt to flexure as it rides over return idlers.V 300 fpm V = design belt speed.

Wb 9 lbs/ft Wb = weight of belt per unit of length of conveyor.Wm 56 lbs/ft Wm = weight of material per unit of length of conveyor.Sag 2.0% Sag = recommended maximum sag percentage to avoid spillage in troughed section of belt.Ls 0 Ls = Length of conveyor from tail pulley to Drive snub (for return run drive only)Hd 0 Hd = Height of conveyor from top of tail pulley to bottom of drive pulley (for return run drive only)

T2 = estimated slack-side tension required to either keep belt from slipping on pulley surface or maintain trough at allowable sag percentage, whichever is greater.

Kx = factor to calculate frictional resistance of the idlers and the sliding resistance between belt and idler rolls.

Tp = tension required to overcome resistance of belt to flexure around pulleys and resistance of pulleys to rotate on their bearings.

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file:///tt/file_convert/5ad963c87f8b9a9d5c8e8964/document.xls , Terminology, Page 8 of 9 05/07/2023 10:31:00

Rulmeca Motorized Pulley Power Calculation Program - Standard Version 7.23Bulk Handling Belt Conveyor Terminology

6508-B Windmill Way Wilmington, NC 28405 Ph 910-794-9294 Fax 910-794-9296 www.rulmecacorp.com

© Copyright - Rulmeca Corp.

Conveyor ProfileInitial Velocity of Material

Conveyor Cross Section in Skirt Zone

Belt Conveyor with Tripper

Hopper Feeder Conveyor

Cleated Belt with Sidewalls

Belt Conveyor with Two Diverter(s)

"CEMA" Idler Type Definitions(Based on Conveyor Equipment Manufacturers Association Manual)

Belt Width Idler Load Ratings* (lbs)Idler Type > A B C D EIdler (deg) > 20 35 45 20 35 45 20 35 45 20 35 45 20 35 45

18 300 300 300 410 410 410 900 900 900 - - - - - -24 300 300 289 410 410 410 900 900 900 1200 1200 1200 1800 1800 180030 300 280 270 410 410 410 900 900 900 1200 1200 1200 1800 1800 180036 275 256 248 410 410 396 900 837 810 1200 1200 1200 1800 1800 180042 - - - 390 363 351 850 791 765 1200 1200 1200 1800 1800 180048 - - - 380 353 342 800 744 720 1200 1200 1200 1800 1800 180054 - - - - - - 750 698 675 1200 1116 1080 1800 1800 180060 - - - - - - 700 650 630 1150 1070 1035 1800 1800 180072 - - - - - - - - - 1050 977 945 1800 1800 180084 - - - - - - - - - - - - 1800 1674 162096 - - - - - - - - - - - - 1750 1628 1575

*These ratings are for three-equal-roll idlers and are based on a 30,000 hour minimum BU bearing life at 500 RPM. BU bearing life represents the statistical point in hours wherea minimum of 90% of the bearings will still be functional with no increase in torque or noise.

Material Surcharge Angle Guide(Based on Conveyor Equipment Manufacurters Association Manual)

Description of Material

5 0 to 19

10 20 to 29 Rounded, dry polished particles, of medium weight, such as whole grain and beans.

20 30 to 34

25 35 to 39 Typical common materials such as bituminous coal, stone, and most ores.

30 40+

Surcharge Angle

Angle of Repose

Uniform size, very small rounded particles, either very wet or very dry; such as dry silica sand, cement, and wet concrete.

Irregular, granular or lumpy materials of medium weight, such as anthracite coal, cottonseed meal, and clay.

Irregular, stringy, fibrous, interlocking material, such as wood chips, bagasse, and tempered foundry sand.

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Return to SpecifierReturn to Trajectory Plot

file:///tt/file_convert/5ad963c87f8b9a9d5c8e8964/document.xls, Lift Height, Page 9 of 9 05/07/2023 10:31:00

Rulmeca Motorized Pulley Power Calculation Program - Standard Version 7.23Conveyor Height Calculator

Inclined conveyor length (ft) 6508-B Windmill WayAngle of inclination (degrees) Wilmington, NC 28405Material lift height (ft) 0.0 Ph 910-794-9294

Fax 910-794-9296 www.rulmecacorp.com © Copyright - Rulmeca Corp.