Screw Conveyor /Bucket Elevator Section Meeting - CEMA

JOINT SCREW CONVEYOR & BUCKET ELEVATOR SECTIONS MEETING

7:30 a.m. Monday, March 18, 2013 Arizona Biltmore Phoenix, Arizona AGENDA 1. Call to Order and Roll Call 2. Approval of the Minutes of September 18, 2012, Meeting

3. Screw Conveyor Safety Video/Pub Inventory (Kimberly MacLaren) 4. Review Engineering Conference Items (Committee) a. 30” and 36” Diameter Screw Conveyors Voting Item b. Safety Video Update c. Physical Properties of Materials/Elevated Temperatures d. Bucket Elevator Guideline e. Hanger Bearings Dimensional Standard Voting Item f. 300 and 350 Review 5. Membership Committee Representation (Kimberly MacLaren) 6. Statistics (Phil Hannigan) 7. Election of Officers – NA for this year 8. Next Meeting of the Section 9. Other Business 10. Adjournment

Bill Mecke, Chair

Garry Abraham, Vice

Chair/Secretary

Conveyor Equipment Manufacturers Association 5672 Strand Ct., Suite 2 • Naples, Florida 34110

Tel: (239) - 514-3441 • Fax: (239) - 514-3470 Web Site: http://www.cemanet.org

E-Mail: [email protected]

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Incorporation of 30” and 36” Screws into CEMA Standard 350

For several years, the CEMA Screw Conveyor Section has tasked the Screw Conveyor

Committee of the CEMA Engineering Conference to develop Screw Conveyor Capacities for 30’

and 36” Screws.

The work of the Committee is done.

It involved addition of 30” and 36” data for the following tables in CEMA Standard 350 “Screw

Conveyors”

Chapter 2 Tables 2‐3, 2‐5, 2‐7, 2‐8, and 2‐9

Chapter 3 Tables 3‐2 and 3‐5.

The following pages show the changes proposed for those tables as well as what those changes

would look like in a revised CEMA Standard 350.

Since Standard 350 is an ANSI/CEMA Standard, formal publication of these changes in 350 will

involve a formal ANSI CEMA Canvass to Revise an American National Standard.

The first step in that process is approval of the changes by the sponsoring organization.

Please review the changes and indicate your approval, approval with comment, or objection to

the proposed changes. Objections must be accompanied by the reason for the objection and a

proposal as to how the objection can be resolved.

Screw Conveyor Capacities

Material Class Code Degree of Trough

Loading Screw Dia.

Inch Maximum RPM*

Capacity, Cubic Feet Per Hour

At Max. RPM At One RPM

A‐15 A‐25 B‐15 B‐25 C‐15 C‐25

45%

6 165 368 2.23

9 155 1,270 8.2

12 145 2,820 19.4

14 140 4,370 31.2

16 130 6,060 46.7

18 120 8,120 67.6

20 110 10,300 93.7

24 100 16,400 164.0

30 90 28,795 320.0

36 75 41,490 553.2

A‐35 A‐45 B‐35 B‐45 C‐35 C‐45 D‐15 D‐25 D‐35 D‐45 E‐15 E‐25 E‐35 E‐45

30% A

6 120 180 1.49

9 100 545 5.45

12 90 1,160 12.9

14 85 1,770 20.8

16 80 2,500 31.2

18 75 3,380 45

20 70 4,370 62.5

24 65 7,100 109.0

30 60 12,800 213.3

36 50 18,440 368.8

CEMA 350

Page 26

Page 1 of 2

2 6

Screw Conveyors for Bulk Materials - Book No. 350


A-15 6 165 368 2.23

A-25 45% 9 155 1,270 8.2

B-15 12 145 2,820 19.4

B-25 14 140 4,370 31.2

C-15 16 130 6,060 46.7

C-25 18 120 8,120 67.6

20 110 10,300 93.7

24 100 16,400 164.0

30 90 28,795 320.0

36 75 41,490 553.2

A-35 E-15 6 120 180 1.49

A-45 E-25 9 100 545 5.45

B-35 E-35 30% 12 90 1,160 12.9

B-45 E-45 A 14 85 1,770 20.8

C-35 16 80 2,500 31.2

C-45 18 75 3,380 45.0

D-15 20 70 4,370 62.5

D-25 24 65 7,100 109.0

D-35 30 60 12,800 213.3

D-45 36 50 18,440 368.8

A-16 C-36 6 60 90 1.49

A-26 C-46 30% 9 55 300 5.45

A-36 D-16 B 12 50 645 12.90

A-46 D-26 14 50 1,040 20.80

B-16 D-36 16 45 1,400 31.20

B-26 D-46 18 45 2,025 45.00

B-36 E-16 20 40 2,500 62.50

B-46 E-26 24 40 4,360 109.00

C-16 E-36 30 35 7,465 213.30

C-26 E-46 36 30 11,064 368.80

A-17 C-37 6 60 45 0.75

A-27 C-47 15% 9 55 150 2.72

A-37 D-17 12 50 325 6.46

A-47 D-27 14 50 520 10.4

B-17 D-37 16 45 700 15.6

B-27 D-47 18 45 1,010 22.5

B-37 E-17 20 40 1,250 31.2

B-47 E-27 24 40 2,180 54.6

C-17 E-37 30 35 3,728 106.5

C-27 E-47 36 30 5,532 184.4

Degree of

Trough Loading

Screw Di a.

Inch

Maximum

RPM *

Capacity, Cubi c Feet Per HourMateria l Cl as s

Code

Table 2-3Screw Conveyor Capacities

* Maximum recommended RPM

Screw Conveyor Capacities

Material Class Code Degree of Trough

Loading Screw Dia.

Inch Maximum

RPM*

Capacity, Cubic Feet Per Hour


A‐16 A‐26 A‐36 A‐46 B‐16 B‐26 B‐36 B‐46 C‐16 C‐26

C‐36 C‐46 D‐16 D‐26 D‐36 D‐46 E‐16 E‐26 E‐36 E‐46

30% B 6 60 90 1.49

9 55 300 5.45

12 50 645 12.9

14 50 1,040 20.8

16 45 1,400 31.2

18 45 2,025 45

20 40 2,500 62.5

24 40 4,360 109

30 35 7,465 213.3

36 30 11,064 368.8

A‐17 A‐27 A‐37 A‐47 B‐17 B‐27 B‐37 B‐47 C‐17 C‐27

C‐37 C‐47 D‐17 D‐27 D‐37 D‐47 E‐17 E‐27 E‐37 E‐47

15% 6 60 45 0.75

9 55 150 2.72

12 50 325 6.46

14 50 520 10.4

16 45 700 15.6

18 45 1,010 22.5

20 40 1,250 31.2

24 40 2,180 54.6

30 35 3,728 106.5

36 30 5,532 184.4

CEMA 350

Page 26

Page 2 of 2

Maximum Lump Size

Screw Dia. Inches Pipe O.D. Inches

Radical Clearance

Inches

Class 1 10% lumps

Ra on R = 1.75 Max. lump, inch

Class 1 25% lumps


Class 1 95% lumps


6 9 9

2‐3/8 2‐3/8 2‐7/8

2‐5/16 3‐13/16 3‐9/16

1‐1/4 2‐1/4 2‐1/4

3/4 1‐1/2 1‐1/2

1/2 3/4 3/4

12 12 12

2‐7/8 3‐1/8

4

5‐1/16 4‐3/4 4‐1/2

2‐3/4 2‐3/4 2‐3/4

2 2 2

1 1 1

14 14

3‐1/2 4

5‐3/4 5‐1/2

3‐1/4 3‐1/4

2‐1/2 2‐1/2

1‐1/4 1‐1/4

16 16

4 4‐1/2

6‐1/2 6‐1/4

3‐3/4 3‐3/4

2‐3/4 2‐3/4

1‐1/2 1‐1/2

18 18

4 4‐1/2

7‐1/2 7‐1/4

4‐1/4 4‐1/4

3 3

1‐3/4 1‐3/4

20 20 24

4 4‐1/2 4‐1/2

8‐1/2 8‐1/4

10‐1/4

4‐3/4 4‐3/4

6

3‐1/2 3‐1/2 3‐3/4

2 2

2‐1/2

30 5‐9/16 12‐1/4 8 5 4

36 6‐5/8 14‐1/2 10 7‐1/2 6

CEMA 350

Page 30

3 0


To facilitate the selection of proper specifications for a screw conveyor for a particularduty, screw conveyors are broken down into three Component Groups. These groups relate bothto the Material Classification Code and also to screw, pipe size, type of bearings and trough thick-ness.

If the material to be conveyed is not listed in Table 2-2, then its Classification Code may bedetermined from Table 2-1.

Table 2-6 is a guide to the proper selection of the appropriate Component Group. It will beobserved that in addition to the flow characteristics of a material, consideration must be given tothe material size, its abrasiveness and its corrosiveness as these determine construction details.

For example, if the material has suitable flow characteristics, is of a Classification Code SizeB, has an abrasive number of 5 and is noncorrosive, the Component Group Number is 1. If babbit-ted or bronze bearings, 1A; or for ball bearings, 1C. It will be noted that if the material is at allcorrosive, ball bearings are not recommended.

Having made the Component Group selection, refer to Tables 2-7, 2-8 and 2-9, which givethe specifications of the various sizes of conveyor screws. The tabulated screw numbers in thistable refer to CEMA Standard No. 300 on Screw Conveyors. This standard gives data on the screwssuch as the length of standard sections, minimum edge thickness of screw flight, bushing data, boltsize, and bolt spacing.

COMPONENT GROUPS

Table 2-5Maximum Lump Size

Class 1 Class 1 Class 1

10% lumps 25% lumps 95% lumps

Ration R = 1.75 Max.

lump, inch

Ration R = 2.5

Max. lump, inch

Ration R = 4.5

Max. lump, inch

6 2 3/8 2 1/3 1 1/4 3/4 1/2

9 2 3/8 3 4/5 2 1/4 1 1/2 3/4

9 2 7/8 3 4/7 2 1/4 1 1/2 3/4

12 2 7/8 5 1/16 2 3/4 2 1

12 3 1/2 4 3/4 2 3/4 2 1

12 4 4 1/2 2 3/4 2 1

14 3 1/2 5 3/4 3 1/4 2 1/2 1 1/4

14 4 5 1/2 3 1/4 2 1/2 1 1/4

16 4 6 1/2 3 3/4 2 3/4 1 1/2

16 4 1/2 6 1/4 3 3/4 2 3/4 1 1/2

18 4 7 1/2 4 1/4 3 1 3/4

18 4 1/2 7 1/4 4 1/4 3 1 3/4

20 4 8 1/2 4 3/4 3 1/2 2

20 4 1/2 8 14 4 3/4 3 1/2 2

24 4 1/2 10 1/4 6 3 3/4 2 1/2

30 5 9/16 12 1/4 8 5 4

36 6 5/8 14 1/2 10 7 1/2 6

Screw

Dia.

Inches

Pipe O.D.

Inches

Radical

Clearance

Inches

Component Groups 1A, 1B and 1C Regular Flights and Regular Trough

Screw Dia. Inches

Coupling Dia. Inches

Screw Number Thickness, U.S. Standard

Guage or Inches

Helicoid Flights Sec onal Flights Trough Cover

6 9 9

1‐1/2 1‐1/2

2

6H304 9H306 9H406

6S307 9S307 9S409

16 ga. 14 ga. 14 ga.

16 ga. 14 ga. 14 ga.

12 12 14

2 2‐7/16 2‐7/16

12H408 12H508 14H508

12S409 12S509 12S509

12 ga. 12 ga. 12 ga.

14 ga. 14 ga. 14 ga.

16 18 20 24

3 3 3

3‐7/16

16H610 18H610

‐‐‐ ‐‐‐

16S612 18S612 20S612 24S712

12 ga. 10 ga. 10 ga. 10 ga.

14 ga. 12 ga. 12 ga. 12 ga.

30 3‐15/16 ‐‐‐ 30S816 3/16 in 10 ga.

36 4‐7/16 ‐‐‐ 36S916 1/4 in 10 ga.

CEMA 350

Page 33

3 3

Chapter 2 - Bulk Material Characteristics, Material Code,Conveyor Size and Speed, Component Groups

N = 120

Shaft diameter in inches

where

N = Maximum operating RPM of screw

Coupling ShaftsFor bearing types A, B and C listed previously, the shafting used for the cou-

plings is AISI C1018 standard cold rolled steel or equal.For hard iron bearings, the shafting for the couplings is usually low carbon steel and sur-

face hardened. Suitably hardened alloy shafting also may be used.

Component Groups

Normal Service Table 2-7

Note: Screw numbers refer to CEMA Standard No. 300.

Helicoid

Flights

Sectional

FlightsTrough Cover

6 1 1/2 6H304 6S307 16 ga. 16 ga.

9 1 1/2 9H306 9S307 14 ga. 14 ga.

9 2 9H406 9S409 14 ga. 14 ga.

12 2 12H408 12S409 12 ga. 14 ga.

12 2 7/16 12H508 12S509 12 ga. 14 ga.

14 2 7/16 14H508 12S509 12 ga. 14 ga.

16 3 16H610 16S612 12 ga. 14 ga.

18 3 18H610 18S612 10 ga. 12 ga.

20 3 --- 20S612 10 ga. 12 ga.

24 3 7/16 --- 24S712 10 ga. 12 ga.

30 3 15/16 --- 30S816 3/16 in 10 ga.

36 4 7/16 --- 36S916 1/4 in 10 ga.

Component Groups 1A, 1B and 1C

Regular Flights and Regular Trough

Screw

Dia.

Inches

Coupling Dia.

Inches

Screw NumberThickness, U.S. Standard

Guage or Inches

Component Groups 2A, 2B, 2C and 2D Regular Flight and Heavy Trough

Screw Dia. Inches



Guage or Inches


6 9 9

1‐1/2 1‐1/2

2

6H308 9H312 9H412

6S309 9S309 9S412

14 ga. 10 ga. 10 ga.

16 ga. 14 ga. 14 ga.

12 12 12

2 2‐7/16

3

12H412 12H512 12H614

12S412 12S512 12S616

3/16 in. 3/16 in. 3/16 in.

14 ga. 14 ga. 14 ga.

14 14 16

2‐7/16 3 3

‐‐‐ 14H614 16H614

14S512 14S616 16S616

3/16 in. 3/16 in. 3/16 in.

14 ga. 14 ga. 14 ga.

18 20 24

3 3

3‐7/16

‐‐‐ ‐‐‐ ‐‐‐

18S616 20S616 24S716

3/16 in. 3/16 in. 3/16 in.

12 ga. 12 ga. 12 ga.

30 3‐15/16 ‐‐‐ 30S824 1/4 in. 10 ga.

36 4‐7/16 ‐‐‐ 36S924 3/8 in. 3/16 in.

CEMA 350

Page 34

Component Groups 3A, 3B, and 3D Extra Heavy Flights and Extra Heavy Trough

Screw Dia. Inches



Guage or Inches


6 9 9

1‐1/2 1‐1/2

2

6H312 9H312 9H412

6S312 9S312 9S416

10 ga. 3/16in. 3/16 in.

16 ga. 14 ga. 14 ga.

12 12 12 14

2 2‐7/16

3 3

12H412 12H512 12H614

‐‐‐

12S412 12S512 12S616 14S624

1/4 in. 1/4 in. 1/4 in. 1/4 in.

14 ga. 14 ga. 14 ga. 14 ga.

16 18 20 24

3 3 3

3‐7/16

‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐

16S624 18S624 20S624 24S724

1/4 in. 1/4 in. 1/4 in. 1/4 in.

14 ga. 12 ga. 12 ga. 12 ga.

30 3‐15/16 ‐‐‐ 30S832 3/8 in. 10 ga.

36 4‐7/16 ‐‐‐ 36S932 3/8 in. 3/16 in.

CEMA 350

Page 34

3 4


Heavy Service Table 2-8

Extra Heavy Service Table 2-9

Note: Screw numbers refer to CEMA Standard No. 300.

Helicoid

Flights

Sectional

FlightsTrough Cover

6 1 1/2 6H308 6S309 14 ga. 16 ga.

9 1 1/2 9H312 9S309 10 ga. 14 ga.

9 2 9H412 9S412 10 ga 14 ga.

12 2 12H412 12S412 3/16 in. 14 ga.

12 2 7/16 12H512 12S512 3/16 in. 14 ga.

12 3 12H614 12S616 3/16 in. 14 ga.

14 2 7/16 ??? 14S512 3/16 in. 14 ga.

14 3 14H614 14S616 3/16 in. 14 ga.

16 3 16H614 16S616 3/16 in 14 ga.

18 3 --- 18S616 3/16 in. 12 ga.

20 3 --- 20S616 3/16 in. 12 ga.

24 3 7/16 --- 24S716 3/16 in 12 ga.

30 3 15/16 --- 30S824 1/4 in 10 ga.

36 4 7/16 --- 36S924 3/8 in 3/16 in.

Component Groups 2A, 2B, 2C, and 2D


Screw

Dia.

Inches

Coupling Dia.

Inches


Guage or Inches

Helicoid

Flights

Sectional

FlightsTrough Cover

6 1 1/2 6H312 6S312 10 ga. 16 ga.

9 1 1/2 9H312 9S312 3/16in. 14 ga.

9 2 9H412 9S416 3/16 in. 14 ga.

12 2 12H412 12S412 1/4 in. 14 ga.

12 2 7/16 12H512 12S512 1/4 in. 14 ga.

12 3 12H614 12S616 1/4 in. 14 ga.

14 3 ??? 14S624 1/4 in. 14 ga.

16 3 --- 16S624 1/4 in. 14 ga.

18 3 --- 18S624 1/4 in. 12 ga.

20 3 --- 20S624 1/4 in. 12 ga.

24 3 7/16 --- 24S724 1/4 in. 12 ga.

30 3 15/16 --- 30S832 3/8 in. 10 ga.

36 4 7/16 --- 36S932 3/8 in. 3/16 in.

Component Groups 3A, 3B and 3D


Screw

Dia.

Inches

Coupling Dia.

Inches


Guage or Inches

Screw Diameter Factor, Fd

Screw Diameter Inches Fd

6 18.0

9 31.0

10 37.0

12 55.0

14 78.0

16 106.0

18 135.0

20 165.0

24 235.0

30 365.0

36 540.0

CEMA 350

Page 40

4 0


Table 3-1Hanger Bearing Factor, F

b

Component Group Bearing Type Fb

Group A Ball 1 . 0

BabbittBronze

Group B *Graphite bronze 1 . 7*Canvas base phenolic*Oil impregnated bronze*Oil impregnated wood

*PlasticGroup C *Nylon 2 . 0

*Teflon

Group D *Chilled hard iron 4 . 4*Hardened alloy sleeve

*Nonlubricated bearings or bearings not additionally lubricated.

Table 3-2

Table 3-3Flight Factor, F

f

Type Conveyor Loading of Flight 15% 30% 45% 95%

Standard 1.0 1.0 1.0 1.0Cut Flight 1.10 1.15 1.20 1.3Cut & Folded Flight N. R.* 1.50 1.70 2.20Ribbon Flight 1.05 1.14 1.20 —

*Not recommended.

Screw Diameter

InchesFd

Screw Diameter

InchesFd

6 18 18 135

9 31 20 165

10 37 24 235

12 55 30 365

14 78 36 540

16 106

Screw Diameter Factor, Fd

4 2


Table 3-5

Torque, T = 63025 x HP

RPM

If coupling bolt shear is the limiting torsional rating, high strength bolts may be substituted.When using high strength bolts the limiting factor will, in all cases, be either the coupling shaft orthe bearing value, and both must be checked.

Screw conveyors are limited in overall length by the amount of torque that can be safelytransmitted through the pipes and couplings.

Table 3-5 combines the various torsional ratings of bolts, couplings and pipes so that it iseasy to compare the torsional ratings of all the stressed parts of standard conveyor screws. Thetable conforms to the CEMA Screw Conveyor Standard No. 300. The torsional values are confinedto the sizes listed in that standard. However, by referring to the detailed data in the Appendix,under TORSIONAL RATINGS OF CONVEYOR SCREW PARTS, the screw conveyor designer can evalu-ate sizes of bolts, pipes and couplings for special applications.

When quick release couplings are used, consult the CEMA manufacturer for specific allow-able torsional values. The composite torsional rating of the joint may vary from the componentvalues shown in the tables.

The lowest torsional rating figure for any given size of coupling will be the one that governshow much horsepower may be safely transmitted. For example, using standard unhardened two-bolt coupling shafts, the limiting torsional strength of each part is indicated by the bold figures inTable 3-5.

Thus, it can be seen that the shaft itself is the limiting factor on 1", 1½" and 2" couplings.The bolts in shear are the limiting factors on the 2-7/16" coupling and on the 3" coupling used inconjunction with 4" pipe. The bolts in bearing are the limiting factors for the 3" coupling used inconjunction with 3½" pipe, and for the 3-7/16" coupling.

Torsional Ratings of Conveyor Screw Parts

C-1018 C-1045

T3 T4 T5 1 2 3 1 2 3

1 1 1/4 3,140 820 1,025 3/8 690 1,380 2,070 985 1,970 2,955

1?1/2 2 7,500 3,070 3,850 1/2 1,830 3,660 5,490 2,500 5,000 7,500

2 2 1/2 14,250 7,600 9,500 5/8 3,800 7,600 11,400 3,930 7,860 11,790

2 7/16 3 23,100 15,030 18,780 5/8 4,635 9,270 13,900 5,820 11,640 17,460

3 3 1/2 32,100 28,350 35,440 3/4 8,200 16,400 24,600 7,770 15,540 23,310

3 4 43,000 28,350 35,440 3/4 8,200 16,400 24,600 12,500 25,000 37,500

3 7/16 4 43,000 42,470 53,080 7/8 12,800 25,600 38,400 10,900 21,800 32,700

3 15/16 5 65,100 61,190 76,485 1 1/8 24,270 48,540 72,810 26,060 52,120 78,180

4 7/16 6 101,160 88,212 110,265 1 1/4 33,760 67,520 101,280 45,375 90,750 136,125

Bolts in Shear T1 in. lbs. Bolts in Bearing T2 in. lbs.

No. of Bolts Used No. of Bolts Used

Torsional Ratings of Bolts, Pipe and Coupling in. lbs.

Shaft Dia.

In.

Pipe Couplings

Dia. In.

Bolts

Size In.

Torque

In. Lbs.

Torque In. Lbs.

To: CEMA Screw Conveyor Engineering Committee Ref: Considerations for Design of Equipment at Elevated Temperatures By: Kris Gililland, PE Engineering Manager KWS Manufacturing June 25, 2012 Introduction: Many times in the design of conveying equipment there is the requirement to operate the equipment at elevated temperatures. To this point, there has not been any readily available guidelines for member companies to consider when designing for such environments. The purpose of this piece is to lay the ground work for an accepted CEMA standard guideline for the design of equipment at elevated temperatures. High Temperature: There are several factors which must be considered when designing equipment for high temperature operation. They include: Material Selection - Material selection is very important when working with high temperature applications. As a rule, material selection should be based on the following table:

Suggested Maximum Service Temperatures AISI Type Maximum Operating

Temperature* A-36 (C.S) 700º F

SA-516-70 (C.S.) 1000º F SA-240-304 (304 SS) 1200º F SA-240-316 (316 SS) 1400º F SA-240-310 (310 SS) 1500º F

* Reference: 2010 ASME Boiler and Pressure Vessel Code Section II Part D.

Strength of Material - As the temperature rises, the strength of the material decreases. This can affect shafts, pipe and other torque carrying members in the equipment design. Below are maximum values for maximum stress values of various materials.

Maximum Stress Values*

MOC 70 200 400 600 700 800 1000 1200 1400 1500 SA-240-304

(304 SS) 16.7 14.3 11.7 10.4 10 9.7 7.8 3.2 SA-240-316

(316 SS) 20 17.3 14.3 12.6 12.1 11.8 11.3 7.4 2.3 SA-240-310

(310 SS) 20 17.6 15.1 13.7 13.3 12.9 9.9 2.5 .4 .2 C.S. Sheet

(SA-36) 16.6 16.6 16.6 16.6 15.6 C.S. Plate (516-70) 20 20 20 19.4 18.1 12 2.5

Temperature in ºF Values are in KSI Values shown include a 3.5:1 safety factor of design versus the Ultimate Tensile Strength * Reference: 2010 ASME Boiler and Pressure Vessel Code Section II Part D. Modulus of Elasticity – As the temperature rises, the modulus of elasticity decreases. This will affect the stress and deflection of the shaft, pipe and any other structural or torque carrying members in the equipment design. The following values can be used:

Modulus of Elasticity at Various Temperatures* MOC 70 200 300 400 500 600 700 800 900 1000 1100

Carbon Steel 29.3 28.6 28.1 27.5 27.1 26.5 25.3 24 22.3 20.2 17.9 Stainless Steel 28.3 27.6 27 26.5 25.8 25.3 24.8 24.1 23.5 22.8 22.1 Temperature in ºF Values shown in lbf/in2 x 106 *Mechanical Engineering Reference Manual – 12th edition Thermal Expansion – Thermal expansion of the material must also be considered to ensure proper equipment alignment and operation is assured. Common design consideration include expansion bearings and slotted support feet. The following table contains these values for various materials:

Coefficient of Linear Expansion

Carbon Steel 6.5 x 10-6 / ºF* Stainless Steel 9.6 x 10-6 / ºF - at 212ºF**

10.4 x 10-6 / ºF - at 1200ºF** *Reference: Mechanical Engineering Reference Manual – 12th edition ** Reference: “Design Guidelines for the Selection and Use of Stainless Steel” Specialty Steel Institute of North America

CEMA STANDARD No. 300-021TYPE 226 HANGERS and BEARINGS

SIZE A B C D

1" 1-7/16 1-1/8 1-1/2 1

1-1/2" 1-15/16 1-9/16 2-1/8 1-1/2

2" 1-15/16 1-9/16 2-3/4 2

2-7/16" 2-15/16 2-3/8 3-1/4 2-7/16

3" 2-15/16 2-3/8 4 3

3-7/16" 3-15/16 3-1/8 4-3/4 3-7/16

TOLERANCE +0, -1/16 +/- 1/16 +/- 1/16 +1/32, -0

CEMA 226 Hanger Bearing Dimensions and TolerancesAll Dimensions and Tolerances are in Inches

Note - Only critical dimensions arE shown. All other dimensions are considered non-critical and based on each individual manufacturer's standard.

SCREW DIA

COUPLING DIA A B C D E F H T

6 1 1/2 7 3/4 4 1/2 2 2 1/2 5 3/8 3/16

1 1/2

2

2 2

2 7/16

3

2 7/16

3

16 3 17 1 3/8 10 5/8 3 2 1/2 5 1/2 3/8

3 3

3 7/16 4

3 3

3 7/16 4

24 3 7/16 25 1 3/4 16 1/2 4 3 1/2 6 5/8 1/2

3/16

2 1/2

14

18

20

5 3/8

13 1 1/4 7 3/4

9

12

10 1 6 1/8 2 2 1/2

15 1 3/8 9 1/4 3 2 1/2

5/8 1/2

5 1/2 3/8

5 1/2

5/8 1/2

3

* D Dimension is the space allowed on couplings. Bearing width will always be less than this dimension.

**F Dimension may vary with different manufacturers, but will not exceed the dimension stated.

21 1 5/8 13 1/2 3 1/2 6

3/8

19 1 5/8 12 1/8 3 1/2 6

DellUser

Highlight

SURVEY SHEET FOR PROPOSED TYPE 216 HANGER BEARING DIMENSIONAL AND TOLERANCE STANDARD

Company

Person

SIZE A B C D E F

1 1/2"

CEMA Screw Conveyor Section Survey ‐ Style 216 Hanger Bearing Dimensions Submitted By:

1 1/2

2"

2 7/16"

3

3 7/16"

TOLERANCE

MINUTES Joint Screw Conveyor and Bucket Elevator Section Meeting

O'Hare Hilton Hotel Chicago, Illinois

Wednesday, September 18, 2012 1. Call to Order and Roll Call

Bill Mecke, Chairman, called the Meeting to order at 7:00 a.m. Fifteen (15) people attended, listed below:

Garry Abraham Screw Conveyor Corporation [email protected] Craig Abraham Screw Conveyor Corporation [email protected] Randy Block Screw Conveyor Corporation [email protected] Jim Calhoun FMC Technologies [email protected] Jeff Gerhart Martin Sprocket & Gear [email protected] Buzz Grant Thomas Conveyor [email protected] Phil Hannigan CEMA [email protected] Mark Jones Nord Gear [email protected] Warren Knapp Screw Conveyor Corporation [email protected] James Lamb Timken Drives [email protected] Kimberly MacLaren CEMA [email protected] Bill Mecke KWS Manufacturing [email protected] Mike Mitchell Stober Drives [email protected] Jim Rogers WAM Inc [email protected] Chris Schmutz Gates [email protected]

2. APPROVAL OF MINUTES Minutes from the March 12, 2012 Meeting held as part of the last Annual Meeting were reviewed and

approved. 3. CURRENT SCREW CONVEYOR VIDEO & PUBLICATION INVENTORY Screw Conveyor Safety video continues to sell well. So far this year 1,005 have been sold. We have an

inventory of 1,008 at this time. The 300/350 documents are available in PDF format along with Print‐On‐Demand at an additional charge.

4. REVIEW OF ENGINEERING CONFERENCE MINUTES

a. 30 and 36 Inch Diameter Screw Conveyors. Engineering Conference finished developing the information to be added to the CEMA 350 for 30” and 36” diameter screw conveyors. This information must be reviewed by Member Companies OR’s for comment. One comment was noted during discussion, not all Member Companies use the same size coupling bolts for these sizes of conveyors. This will have to be discussed and a consensus opinion developed and accepted.

Conveyor Equipment Manufacturers Association 5672 Strand Court, Suite 2 • Naples, Florida 34110

Tel: (239) - 514-3441 • Fax: (239) - 514-3470 Web Site: http://www.cemanet.org

E-Mail: [email protected]

There was further discussion at the end of the meeting on this point and what will need to happen if no consensus opinion can be developed.

b. Safety Video. Work needs to continue on this action item. Member Company OR’s must be polled

on changes that need to be made to properly update the video. Garry Abraham noted that the CEMA Board has added $15,000 to the 2012‐2013 Budget to pay for the update of the video. This review needs to be started soon. A Champion must be assigned to this action item.

c. Physical Properties of Materials Design of Equipment at Elevated Temperatures. These two action

items were combined by the Engineering Conference and a two (2) page presentation was developed. This presentation now must be reviewed by Member Company OR’s and a decision must be made how to use the material, distribute to Member Companies only or publish on the CEMA website for general use.

d. Bucket Elevator Guideline Guide. Work continues on this action item by a special sub‐committee of

the Engineering Conference Chaired by Warren Knapp. A Table of Contents has been developed and individuals on the sub‐committee assigned to each Chapter. The sub‐committee meets via telephone conference the first week of each month to review their progress on this action item.

e. Hanger Bearing Dimensional Standard. A Table has been developed of the critical and non‐critical

dimensions for the 226 Hanger Bearing, including accepted tolerances for the critical dimensions. It was agreed to remove the non‐critical dimensions from the chart and redistribute the chart of Member Companies for comment. A decision will be made at the next meeting as how to use the information and the Engineering Conference will develop a chart of critical dimensions with accepted tolerances for each.

f. Installations, Operation & Maintenance Manual. All work has been completed on this action item.

Work was reviewed by all Member Company OR’s and a unanimous vote was taken to approve work and recommend to the CEMA Board that the work be published on the CEMA website for download at a cost between $5 ‐ $20 (pending Board approval) for a Non‐member Company and free to Member Companies. It was noted that it is important that we charge Non‐Member Companies for work like this otherwise the perceived value is zero.

g. CEMA 300 and 350 Review. Engineering Conference has started a review of the pictures and

illustrations in both the CEMA 300 and 350 products. This work was endorsed by Member Company OR’s present at the meeting and will continue. Chapters will be assigned to Member Companies and the action items will be reviewed monthly by telephone conference. A Champion must be assigned to this action item.

5. MEMBERSHIP COMMITTEE REPORT Member Committee Representative discussed the new Press Release. The current level of CEMA

Member companies stands at 120 with 101 Manufacturing and 19 Technical Members. One Application is pending payment of dues. The current lists of Screw Conveyor and Bucket Elevator prospects for Membership were reviewed.

6. STATISTICS Phil Hannigan distributed the latest screw conveyor Sales and Entries statistics for the Committee to

review. The CEMA screw conveyor market continues to be up since mid‐2009, however it appears there is a leveling or top being reached.

7. NEXT MEETING OF SECTION The next Meeting of the Section will be March 18, 2013 at the Arizona Biltmore Resort, Phoenix, AZ. 8. OTHER BUSINESS No other business was discussed. 9. ADJOURNMENT The Meeting was adjourned at 8:25 a.m. Respectfully submitted, Bill Mecke, Chairman Garry M. Abraham, Vice‐Chairman/Secretary

MINUTES OF THE CEMA ENGINEERING CONFERENCE

SCREW CONVEYOR COMMITTEE MEETING

TUESDAY, JUNE 26, 2012

CALL TO ORDER Chairman Bill Mecke called the meeting to order at 8:45 AM. Seventeen people were in attendance representing 14 member companies. See Attendance List at the end of these minutes.

MINUTES APPROVED Minutes from June 28, 2011 meeting were reviewed and approved. OLD BUSINESS CEMA Installation, Operation, and Maintenance Manual –

• Change the “CEMA” logo from the “member” logo to the standard CEMA logo throughout the document.

• Change the CEMA address on the bottom of Page 7 and the web site address in the body of paragraph 1 on Page 7 or delete it.

• Add the branding on the safety labels. • On Page 7, the vertical labels must all be the same size. Additionally, the upper two vertical labels

have the label numbers cut off. • Verify on CEMA document SC 2004-01 that in paragraph 1, is “Williams-Steiger Occupational

Safety and Health Act” the proper way to refer to this document? • Page 10 of 19, change some of the type setting. • To Chart “A” – Bolt Torque Guide – add a column for T-304-SS and T-316-SS hardware. Dave

Meyers to provide information. 30”dia. and 36”dia. conveyors – Reviewed capacity per RPM for 30” and 36”. Reviewed proposed maximum screw speed and diameter factor. Compared maximum screw speed and diameter factor with numbers generated by KWS. Approved a common value for both. Looked at lump size chart and recommend materials thickness charts submitted by KWS. Have Phil disseminate to committee members. Committee members to comment and return. Target date is the end of August.

• Discuss dimensional standards next year. Hanger Bearing Dimensional Information – Based on the dimensional information supplied by member companies. Phil to send recommended chart to member companies for final check. Return by the end of July. Physical Properties of Materials – Mark Wilkerson passed project over to KWS. Kris presented a document with a brief explanation of where the information came from. Phil to disseminate document to all committee members.

Conveyor Equipment Manufacturers Association 6724 Lone Oak Blvd. • Naples, Florida 34109 Tel: (239) - 514-3441 • Fax: (239) - 514-3470

Web Site: http://www.cemanet.org E-Mail: [email protected]

NEW BUSINESS CEMA Safety Video – Have all member companies review current video and submit specifics for the project. Some comments from last year included the following:

• Can pictures be edited at a minimal cost. • Have any of the safety labels and/or placements been changed? • Include a comment on “stored energy” when mentioning “killing the power source”.

CEMA 300 and 350 review – Agreed to break down the 350 into sections and assign to various committee members. Continental will take Chapter 1 & 2, Screw Corp will take Chapter 3, KWS will take Chapter 4 & 5, Martin will take Chapter 6 & 7, Thomas will take Chapter 8.

Todd from McLanahan brought up two points. The first point was the dimensional difference between CEMA members on hanger side frames. The complete hanger is interchangeable, but the side frames are not. The second point was similar and had to do with Q.D. caps. Every member company is using a different dimensional standard. Mention both to the O.R.’s. After the shafted screw conveyor manual is completed, immediately work on a shaftless manual. ADJOURN Meeting was adjourned at 10:42 AM.

List of Attendees

Bill Mecke KWS Manufacturing [email protected] Trevin Berger Martin Sprocket & G [email protected] Kris Gililland KWS Manufacturing [email protected] Raul Morales Rexnord [email protected] Jeff Gerhart Martin Sprocket & Gear [email protected] Buzz Grant Thomas Conveyor [email protected] David Myers Jim Myers & Sons [email protected] Todd Huber McLanahan Corp. [email protected] Warren Knapp Screw Conveyor Corp. [email protected] Chris Tarver Maxi-Lift, Inc. [email protected] Kimberly MacLaren CEMA [email protected] Mark Jones Nord Gear [email protected] Carl Baker Prab, Inc. [email protected] Jon Hall FMC Technologies [email protected] Gene Renner Automatic Systems, Inc. [email protected] John Bisotti Emerson Ind. Automation [email protected] Chuck Leonard Continental Screw Conv. [email protected]

8. NEXT MEETING OF SECTION The next meeting of the section is September 19, 2012 at the O’Hare Hilton Hotel; Chicago, IL.

9. OTHER BUSINESS No other business was discussed.

10. ADJOURNMENT The Meeting was adjourned at 8:45 a.m.

Respectfully submitted, Edward J. Turner, Chairman Garry M. Abraham, Acting Vice‐Chairman/Secretary

THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY

MINUTES OF THE 85th CEMA ENGINEERING CONFERENCE

Bucket Elevator Committee Meeting

LaPlaya Beach Hotel, Naples, Florida June 26, 2012

1. Call to Order / Roll Call:

Meeting convened at 11:30 am by Warren Knapp, Chair Roll Call: List of attendees attached.

2. Meeting Minutes Approval: Engineering 2011 meeting minutes approved by consent.

3. Old Business: • Bucket Elevator Standards • It was decided by the Committee that review/approval of the followings drafts: Table of

Contents, Chapter 1, Chapter 2 and Chapter 3 would not be reviewed at this meeting.

4. New Business: • The Committee decided that they would have attendees of the meeting volunteer to review

and develop each chapter under the “Table of Contents”. Volunteers were recorded (see attached list) and were asked to review and/or develop their chapters and have a progress report ready by the CEMA Fall Meeting in September. A draft of what has already been provided will be sent to each volunteer. CEMA will assist in collecting data and provide a working page location on the website to facilitate progress on project.

• Trevin Berger, Martin Sprocket & Gear and Bill Mecke, KWS Manufacturing, will assist in ensuring the project stays on task.

• The Committee decided that the name of the book will be “Bucket Elevator Design Application”

• A conference call will be set-up for the first (1st) week of September for a progress report from all volunteers.

• A review of the Prospective Bucket Elevator Candidates was reviewed, with additions and deletions.

Next Meeting scheduled for September 19, 2012, O’Hare Hilton. Meeting adjourned at 12 noon. Warren Knapp, Chair Attachment1 – Volunteer Review List for Bucket Elevator Design Application Attachment 2 – Suggested Reference Material Attachment 3 – DRAFT of Bucket Elevator Design Application

Conveyor Equipment Manufacturers Association

2008 Bucket Elevator Design Application – Chapter Log 2012

Chapters Assignment / Name Due Date

Progess

Chapter #1 & #2

Gen. Description & Principal Types/App’s Action: Review

Fall Meeting

Volunteers Jeff Gerhart-Martin S&G / Chris Tarver, Maxi-Lift Chapter #3 & #4

Material List & Selection of type based on materials Action: Develop & Review

Fall Meeting

Volunteers Jeff Gerhart- Martin S&G Chapter #5

Method of filling/ unloading buckets Action: Develop & Review

Fall Meeting

Volunteers Warren Knapp, SCC & Jeff Gerhart, Martin S&G Chapter #6

Pulley/Sprocket size related to speed/bucket projection Action: Develop & Review

Fall Meeting

Volunteers Kris Tarver, Maxi-Lift & Trevin Berger, Martin S&G Chapter #7 & #8

Bucket type/spacing & Bucket shape related to mat. Action: Develop & Review

Fall Meeting

Volunteers Raul Morales, Rexnord & Kris Tarver, Maxi-Lift Chapter #9 & #10

Belt Selection & Belt Splices/Splicing Action: Develop & Review

Fall Meeting

Volunteers Kris Gililland, KWS Mfging (he will talk to Belt PPL) Chapter #11

Chain Selection Action: Develop & Review

Fall Meeting

Volunteer Kurt Robinson, Webster Chapter #12

Clearances Action: Develop & Review

Fall Meeting

Volunteer Warren Knapp, SCC Chapter #13

Calculations and Horsepower Action: Develop & Review

Fall Meeting

Volunteer Kris Gililland, KWS Mfging Chapter #14

Types of take-up and travel Action: Develop & Review

Fall Meeting

Volunteers Jeff Gerhart, Martin S&G & Raul Morales, Rexnord Chapter #15

Trajectory of material from buckets Action: Develop & Review

Fall Meeting

Volunteer Chuck Leonard, Continental Screw Conveyor Chapter #16

Safety and safe guards Action: Develop & Review

Fall Meeting

2008 Bucket Elevator Design Guide – Reference Material 2012

Chapters Suggested Reference Material

Chapter #1 General Description

Link-Belt, 400, 800, 900, 1000, Jeffrey 418, Stephens-Adamson 66Kempe’s Engineer’s Yearbook, Material Handling Handbook Perry’s Chemical Engineers Handbook, Mechanical Handling of Materials (T.K. Ray) Mechanical Conveyors for Bulk Solids (H. Colijn) Conveying Machines (A. Spivakovsky and V. Dyachkov)

Chapter #2 Principal Types & Appli- catons

Link-Belt 1000, Jeffrey 418, Stephens-Adamson 66 Kempe's Engineer's Yearbook, Material Handling Handbook Perry's Chemical Engineers Handbook, Mechanical Handling of Materials (T.K. Ray) Mechanical Conveyors for Bulk Solids (H. Colijn) DIN Standards Conveying Machines (A. Spivakovsky and V. Dyachkov)

Chapter #3 Material List

Link-Belt, 400, 800, 900, 1000, Jeffrey 418, Stephens-Adamson 66 Bonded Scale 1580, Feeco International Handbook (sixth printing)

Chapter #4 Selection of type based on Materials

Link-Belt, 400, 800, 900, 1000, Jeffrey 418, Stephens-Adamson 66 Bonded Scale 1580, Feeco International Handbook (sixth printing)

Chapter #5 Method of filling & unloading buckets

Conveying Machines (A. Spivakovsky and V. Dyachkov) Belt Conveyors and Bucket Elevators, Second Edition (Hetzel) Belt Conveyors and Bucket Elevators, Third Edition (Hetzel) GoodYear Red Book A Practical Guide To Elevator Design Mechanical Conveyors for Bulk Solids (H. Colijn) Kempe's Engineer's Yearbook, Material Handling Handbook Agricultural Process Engineering (S.M. Henderson , B.L. Perry 1955) Reports on HS Bucket Elevator Test Laboratory Project L3260 EL1, 1952 Bulk Solids Handling, Vol 5 No.2 April 85 ISSN 0173-9980*S 20268F Belt Service Manual, Contitech

Chapter #6 Pulley & Sprocket size related to speed / bucket projection

Chains for Power Transmission and Material Handling , Design and Applications Handbook, ACA Conveying Machines (A. Spivakovsky and V. Dyachkov) Belt Conveyors and Bucket Elevators, Second Edition (Hetzel) Belt Conveyors and Bucket Elevators, Third Edition (Hetzel) GoodYear Red Book A Practical Guide To Elevator Design Mechanical Conveyors for Bulk Solids (H. Colijn) Kempe's Engineer's Yearbook, Material Handling Handbook Agricultural Process Engineering (S.M. Henderson , B.L. Perry 1955) Reports on HS Bucket Elevator Test Laboratory Project L3260 EL1, 1952 Bulk Solids Handling, Vol 5 No.2 April 85 ISSN 0173-9980*S 20268F

Chapter #7 Bucket Type

GoodYear Red Book Belt Service Manual Contitech Chains for Power Transmission and Material Handling , Design and Applications Handbook, ACA

Chapter #8 Spacing & Bucket Shape..

Conveying Machines (A. Spivakovsky and V. Dyachkov)DIN Standards

2008 Bucket Elevator Design Guide – Reference Material 2012

Chapter #9 Belt Selection

GoodYear Red Book Belt Service Manual Contitech Scandura B.F. Goodrich Engineering Manual IPC-73-C B-8

Chapter #10 Belt Splices & Splicing

B.F. Goodrich Engineering Manual IPC-73-C B-8Belt Service Manual Contitech GoodYear Red Book 4B, see PDF

Chapter #11 Chain Selection

Chains for Power Transmission and Material Handling , Design and Applications Handbook, ACA Chapter #12 Clearances

A Practical Guide To Elevator Design etc. Chapter #13 Calculations / Horsepower

Belt Conveyors and Bucket Elevators, Second Edition (Hertzel)Belt Conveyors and Bucket Elevators, Third Edition (Hertzel) Mechanical Conveyors for Bulk Solids (H. Colijn) Kempe’s Engineer’s Yearbook, Material Handling Handbook

Chapter #14 Types of take-ups & travel

Link-Belt, 400, 800, 900, 1000, Jeffrey 418, Stephens-Adamson 66Chains for Power Transmission and Material Handling , Design and Applications Handbook, ACA B.F. Goodrich Engineering Manual IPC-73-C B-8 Belt Service Manual Contitech GoodYear Red Book

Chapter #15 Trajectory of Materials / Buckets

GoodYear Red Book Belt Conveyors and Bucket Elevators, Second Edition (Hertzel) Belt Conveyors and Bucket Elevators, Third Edition (Hertzel) Mechanical Conveyors for Bulk Solids (H. Colijn) Kempe’s Engineer’s Yearbook, Material Handling Handbook A Practical Guide To Elevator Design etc. Agricultural Process Engineering (S.M. Henderson, B.L. Perry 1955) Reports on HS Bucket Elevator Test Laboratory Project L3260 EL1, 1952 Bulk Solids Handling Vol 5 No. 2 April 85 ISSN 0173-9980*S 20268F

Chapter #16 Safety Guards

NFPA 61, etc. OSHA 1910

MINUTES OF THE JOINT SCREW CONVEYOR AND BUCKET ELEVATOR SECTION MEETING CEMA ANNUAL MEETING

EDEN ROC RESORT – MIAMI, FL MONDAY, MARCH 12, 2012

1. CALL TO ORDER AND INTRODUCTIONS Ed Turner, Chairman, called the Meeting to order at 7:30 a.m. In the absence of Bill Mecke, Garry Abraham acted as Vice Chair/Secretary for the Meeting. Twenty‐two (22) people attended. Phil Hannigan CEMA Jim Diez Dorris Gear Drives Mike Shea ABB . Boldor . Dodge Ray Sommerlot Sommerlot Eng Prod Mike Mitchell Stober Drives Charles East FMC Technologies, Inc. Peter Radding Veyance/Goodyear E P Jim Collins KWS Ben Hinds Baldor‐Dodge Jim Calhoun FMC Technologies, Inc. Terry Schadeberg Nord Gear Mark Jones Nord Gear Garry Abraham Screw Conveyor Corp. Bill Harvey Martin Sprocket & Gear Ed Turner Martin Sprocket & Gear Anthony Leali Electro‐Sensors, Inc. Don Sublett Fenner Dunlop Carroll Weimer CEMA Legal Counsel Mike Bason Kase Conveyors Paul Ross Douglas Mfg. Noel Bell Martin Sprocket & Gear Kimberly MacLaren CEMA

2. APPROVAL OF MINUTES Minutes from the September 21, 2011 Meeting were reviewed and approved.

3. CURRENT SCREW CONVEYOR SAFETY VIDEO & PUBLICATION INVENTORY Screw Conveyor Safety video continues to sell well. Last year 1,212 videos sold, 1,206 to Member companies, 6 to Non‐Member companies. The 300/350 documents are available in PDF format along with Print‐On‐Demand at an additional charge.

4. REVIEW OF ENGINEERING CONFERENCE MINUTES

a. 30 and 36 Inch Diameter Screw Conveyors. Committee will continue to develop information such as

recommended pipe size, capacities, speeds and horse power for each. This information will be incorporated into the 350 Manual. No additions to the 300 standard will be created for 30 & 36 inch screw conveyors.

Conveyor Equipment Manufacturers Association

b. Update to Screw Conveyor Safety Video. The update to the Safety video was reviewed. It was mentioned that the current video was produced 12 years ago and is still good, except some updates would be beneficial. An estimate of $13,500.00 to update the video was presented for two (2) days of work with a $1,400.00/hour figure for additional time on a 3rd day, if needed. The Committee approved that a request would be brought to the CEMA Board by Garry Abraham to allocate $15,000.00 in the next year’s CEMA Budget for this work and if the Board came back with a favorable response the topic would be given to the Engineering Conference to work on the new copy and artwork required for use in producing the video.

c. Physical Properties of Materials. The Engineering Group will continue to create basic guidelines or “best practices” for designing screw conveyors under various material conditions, such as temperature, etc.

d. Bucket Elevator Guideline Manual. The Bucket Elevator sub‐committee of the Screw Conveyor Committee at the Engineering Conference continues to work on the copy to be presented for review at the June Engineering Conference and further reviewed at the Fall Meeting in Chicago.

e. Hanger Bearing Dimensional Information. Five (5) Member Companies have now reported on the 226 Bearing and two (2) Member Companies have reported on the 216 Bearing. More Member feedback is needed and tolerances must be added to critical dimensions. This information, when completed, will be shared between the Members that participate in the survey.

f. Safety, Operation & Maintenance Manual. The final draft was approved with two (2) items to be checked and an addition to the end of the Manual. First, the wording on Page 6, Paragraph 1 – the correct name of the Act creating OSHA will be confirmed by CEMA Counsel. Second, the procedure on Page 10 on how to set‐up and align a screw conveyor will be confirmed and the CEMA Safety Sticker placement sheets and safety poster will be added to the end of the Manual to have all this information on one document. It was agreed that this Manual would be available on the CEMA website for download.

5. MEMBERSHIP COMMITTEE REPORT Member Committee Representative discussed the new Press Release. The current level of CEMA Member companies stands at 116 with 100 Manufacturing and 16 Technical Members. The current lists of Screw Conveyor and Bucket Elevator prospects for Membership were reviewed. Kimberly MacLaren, Manager of Marketing/Membership, continues to do great work in recruiting new prospects for Membership.

6. STATISTICS Phil Hannigan distributed the latest Screw Conveyor Sales & Entries statistics for the Committee to review. CEMA screw conveyor market continues to be up since mid‐2009, however there was a peak reached late 2011.

7. ELECTION OF OFFICERS

This was not the year for the election of new Officers. However, because of the upcoming retirement of Ed Turner, Chairman, from Martin Sprocket & Gear on June 30, 2012, this was necessary. New Officers are Bill Mecke , Chairman and Garry Abraham, Vice‐Chairman/Secretary. A Motion was made and approved along with special thanks to Ed Turner, Chairman, for his many years of service to CEMA and the Screw Conveyor Committee and wishing him a long and happy retirement.

Screw Conveyor /Bucket Elevator Section Meeting - CEMA

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