8/13/2019 CEMA8 5pg

1/5

2/7/2014

12:51 PMLOEFFLER ENGINEERING GROUP

20511 Highland Lake Drive, Lago Vista, TX 78645

512-267-8700

ESTIMATOR/ENGINEER Frank Loeffler

DATECLIENT

PROJECT

PROJECT NUMBER

CONVEYOR NUMBER

LOAD CASE Full

DISC FILE NAME h:/

REVISION 0 CONVEYOR PROFILE

VOLUMETRIC DATABELT WIDTH INCHES

CROSS SECTION

AREA FT 2BELT SPEED FT/MIN

CAPACITY (TPH) 18 0.238 0

MATERIAL 24 0.455 0

MATERIAL DENSITY (PCF) 50 30 0.740 0

ANGLE REPOSE (DEG) 37 36 1.095 0

ANGLE SURCHARGE (DEG) 27 42 1.519 0

MAXIMUM LUMP SIZE 48 2.013 0

MOISTURE CONTENT (%) 54 2.575 0

TROUGH ANGLE (DEG) 35 60 3.207 0

BELT WIDTH (INCHES) 66 3.908 0

BELT SPEED (FPM) 72 4.678 0

LOAD RATIO #N/A 84 6.427 096 8.451 0

108 10.753 0

NOTE: 1. Shaded areas are required input data. The above table shows the required belt speed based on capacity, density &

2. Values shown in shaded areas are the most troughing idler angle. The values shown are NOT recommended belt speeds.

common input. These values should be

overidden if actual requirements differ. Select the belt width and speed in accordance with values recommended by CEMA.

3. Values shown in non-shaded areas are Typical belt speeds range from 200 to 1000 fpm based on product & belt width.

program calculated, or standard values

but they may also be overidden. The maximum lump size should range from bw/3 for 10% lumps to bw/10 for all lumps.

See table in CEMA.

PAGE 1

8/13/2019 CEMA8 5pg

2/5

LOEFFLER ENGINEERING GROUP

CONVEYOR DESIGN AND ESTIMATING SOFTWARE

VERSION 3.0

ESTIMATOR/ENGINEER Frank LoefflerTYPICAL VALVES OF Cs

DATE 0 BAUXITE = .19 IRON ORE = .28

CLIENT 0 CEMENT = .21 LIMESTONE = .13

PROJECT 0 COAL = .08 WOOD CHIPS = .01

PROJECT NUMBER 0 COKE = .02 IGNORE MAT'L = 0

CONVEYOR NUMBER 0 GRAIN = .04 ON SKIRT

PHYSICAL DATA GEOMETRY DATA

HORIZONTAL CONVEYOR LENGTH (FEET) HEAD TAIL

CONVEYOR NET LIFT (FEET) TAKE UP LOCATION X

CONVEYOR LENGTH ALONG BELT (FEET) 0.0DESIGN TEMPERATURE (DEG -F) 32 SCREW GRAVITY

BELT SAG (%) 2 TAKE UP TYPE X

CONVEYOR SLOPE (DEGREES) #DIV/0! DRIVE WRAP ANGLE 180 180

DRIVE WRAP FACTOR CW 0.8 0.5

ACCESSORIES

SKIRTBOARD LENGTH (ONE SIDE) FT. 0 NOTE: DUAL DRIVES INPUT WRAP FOR BOTH PULLEYS

DEPTH OF MAT'L ON SKIRTBOARD (INCH) 0 CW BASED ON LAGGED PULLEYS

NUMBER OF BELT CLEANERS 1

NUMBER OF V-PLOWS 2

NUMBER OF PULLEYS 6 MISCELLANEOUS FRICTIONS

DRIVE LOSS MULTIPLIER 1.05 BELT CLEANER FRICTION (#/IN) 5

INCOMING MAT'L VELOCITY (FPM) 0 PLOW CLEANER FRICTION (#/IN) 2

MAT'L ON SKIRTS FACTOR Cs 0.13 DO YOU WANT APPENDIX A PULLEY FRICTION Y

IS CONVEYOR BELTING STEEL CABLE N

OPTIONAL (For Use with Estimate ) ELECTRICAL EQUIPMENT OPTIONAL (FOR USE WITH ESTIMATE) BENT HEIGHTS (FT)

MOTORS - TEFC Y Bent #1 Bent #7

MOTORS - X PROOF N Bent #2 Bent #8

SWITCHES - NEMA 4 Y Bent #3 Bent #9

SWITCHES - X PROOF N Bent #4 Bent #10

Bent #5 Bent #11

Bent #6

8/13/2019 CEMA8 5pg

3/5

LOEFFLER ENGINEERING GROUP

CONVEYOR DESIGN AND ESTIMATING SOFTWARE

VERSION 3.0

ESTIMATOR/ENGINEER Frank Loeffler STANDARD CEMA IDLER SPEG.

DATE 0 BELT MATERIAL DENSITY

CLIENT 0 WIDTH 30 50 75 100 150 200

PROJECT 0 18 5.5 5.0 5.0 5.0 4.5 4.5PROJECT NUMBER 0 24 5.0 4.5 4.0 4.0 4.0 4.0

CONVEYOR NUMBER 0 30 5.0 4.5 4.0 4.0 4.0 4.0

36 5.0 4.5 4.0 4.0 3.5 3.5

IDLER DATA 42 4.5 4.5 3.5 3.5 3.0 3.0

WEIGHT OF MATERIAL (#/FT) #DIV/0! 48 4.5 4.0 3.5 3.5 3.0 3.0

WEIGHT OF BELT (#/FT) #N/A 54 4.5 4.0 3.5 3.5 3.0 3.0

WT .MAT'L + WT. BELT (#/FT) #DIV/0! 60 4.0 4.0 3.0 3.0 3.0 3.0

IDLER ROLL DIAMETER (IN) 6 72 4.0 3.5 3.0 3.0 2.5 2.5

CEMA IDLER SERIES C

TROUGHING IDLER SPEG (FT) #N/A STANDARD LOAD RATINGS (35 Degree Trough) RETURN IDLER SPEG (FT) 10 BELT CEMA CEMA CEMA CEMA

IDLER AI FACTOR 1.5 WIDTH B C D E

IDLER LOAD # #DIV/0! 18 410 900

24 410 900 1200

30 410 900 1200

APPROXIMATE BELT WEIGHT 36 410 837 1200 1800

BELT DENSITY 42 363 791 1200 1800

WIDTH 30 - 74 75 - 130 130-200 48 353 744 1200 1800

18 3.5 4 4.5 54 698 1116 1800

24 4.5 5.5 6 60 650 1070 1800

30 6 7 8 72 977 1800

36 9 10 12

42 11 12 14 IDLER Ai FACTORS * For V-Returns increase Ai by 5%

48 14 15 17 CEMA ROLL Ai * For belt speed >1000 fpm consult factory

54 16 17 19 SERIES DIA.

60 18 20 22 B&C 4 2.3

72 21 24 26 B,C,&D 5 1.8

84 25 30 33 C&D 6 1.5

96 30 35 38 E 6 2.8

NOTE: For steel cable belts increase by 50% E 7 2.4

PAGE 3

8/13/2019 CEMA8 5pg

4/5

LOEFFLER ENGINEERING GROUP

CONVEYOR DESIGN AND ESTIMATING SOFTWARE

VERSION 3.0

ESTIMATOR/ENGINEER Frank Loeffler

DATE 0

CLIENT 0PROJECT 0

PROJECT NUMBER 0

CONVEYOR NUMBER 0

CONDITION

NORMAL FRICTION

FULL LOAD

NORMAL FRICTION

EMPTY

REDUCED FRICTION

FULL LOAD

BREAKAWAY

FULL LOAD

FRICTION FACTORS

IDLER KX #DIV/0! #N/A #DIV/0! #DIV/0!

FLEXURE KY #DIV/0! 0.035 #DIV/0! #DIV/0!

TEMPERATURE KT 1.0 1.0 1.00 1.0

BREAKAWAY MULTIPLIER 1.35

DRIVE WRAP FACTOR CW 0.50 0.50 0.50 0.50

DRIVE LOSS MULTIPLIER 1.05 1.05 1.00 1.05

HORSEPOWER & FRICTION TE TE HP TE HP TE HP TE HP

TROUGH FRICTION Kx #DIV/0! #DIV/0! #N/A #N/A #DIV/0! #DIV/0! #DIV/0! #DIV/0! #

TROUGH FRICTION Ky #DIV/0! #DIV/0! #N/A #N/A #DIV/0! #DIV/0! #DIV/0! #DIV/0! #RETURN FRICTION #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #

LIFT LOAD #DIV/0! #DIV/0! 0 0.0 #DIV/0! #DIV/0! #DIV/0! #DIV/0!

LOAD ACCELERATE 0 0.0 0 0.0 0 0.0 0 0.0

BELT CLEANER 0 0.0 0 0.0 0 0.0 0 0.0

V-PLOW 0 0.0 0 0.0 0 0.0 0 0.0

MAT'L ON SKIRTS + RUBBER 0 0.0 0 0.0 0 0.0 0 0.0

PULLEY FRICTION #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #D

OTHER-TRIPPERS,PLOWS ETC. 0 0.0 0 0.0 0 0.0 0 0.0

TOTAL TE & HP #DIV/0! #DIV/0! #N/A #N/A #DIV/0! #DIV/0! #DIV/0! #DIV/0! #

TENSIONS

T1 #DIV/0! #DIV/0! #DIV/0! #DIV/0!

T2 #DIV/0! #DIV/0! #DIV/0! #DIV/0!

8/13/2019 CEMA8 5pg

5/5

LOEFFLER ENGINEERING GROUP

DESIGN AND ESTIMATING SOFTWARE

VERSION 3.0

ESTIMATOR/ENGINEER Frank Loeffler

DATE 0

CLIENT 0

PROJECT 0

PROJECT NUMBER 0

CONVEYOR NUMBER 0

CEMA KY

AVERAGE TENSION Ky

1000 #N/A

2000 #N/A

3000 #N/A

4000 #N/A

5000 #N/A

6000 #N/A

7000 #N/A

8000 #N/A

9000 #N/A

10000 #N/A

11000 #N/A

12000 #N/A

13000 #N/A

14000 #N/A

15000 #N/A

16000 #N/A

>16000 0.016

APPROX. AVE TENSION #DIV/0!

AVE KY #DIV/0!

PAGE 5