Conveyor Equipment Manufacturers Association

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Conveyor Equipment Manufacturers ssociation MINUTES OF THE CEM ENGINEERING CONFERENCE IDLER COMMITTEE MEETING Tuesday, June 27, 2017 1.

1 Conveyor Equipment Manufacturers ssociation MINUTES OF THE CEM ENGINEERING CONFERENCE IDLER COMMITTEE MEETING Tuesday, June 27, The Idler Committee meeting convened at 8:42 am lead by Jarrod Felton, Superior Industries (Chair Conveyor Idler Committee). 2. ttendance sheets were sent around the room and each person in attendance introduced themselves and what company they represented. There were 45 people in attendance. See attached attendance rosters. 3. genda was approved with addition of adding to the agenda to approve the agenda. Prior Conveyor Idler Committee meeting minutes from June 21, 2016 were discussed and approved. Comments to correct item 6 of the Fall 2016 meeting minutes dated Tuesday, September 20, 2016 were discussed. It was decided to correct item 6 of these meeting minutes from Phil added draft to the current belt book. to Phil will add draft to the next edition of the Conveyors for Bulk Materials book. 4. Old Business a. CEM G Idler dimensions: Review simplified dimensional survey results. The CEM G Idler dimensional survey was sent out prior to this meeting and responses were received from 4 companies. One response looked to be an error as the dimension for the overall length of the trougher C MX was the same for all belt widths in the survey response. Discussion was started on what to do next. This discussion began with a short review on why the survey for CEM G dimensions. Main points were the OR s (Official Representatives) asked for emerging technologies as it was recognized that conveyor capacitates were getting larger and belt widths were getting wider. This created a need for idlers with larger capacities than the CEM F idler. Previous years had recommended load ratings for the CEM G idler which were approved and added to the current NSI/CEM Standard 502 released in proposal was made to create a subcommittee to condense the survey information into the format of the idler standard for the fall CEM meeting. This motion was approved with Paul Schmidgall volunteering to be the Chair of this subcommittee. Shown is a list of the volunteers for this committee. Sub-Committee: Paul Schmidgall, Superior Industries (Chair) (p.schmidgall@superiorind.com); Tom Hubbert, Syntron (tom.hubbert@syntronmh.com); Benjamin Brewer,

2 Douglas Mfg. Jim Masek, PPI b. High Speed Conveying. i. TIR survey. The latest TIR survey did not yield any results. ii. Review of any further information from other standards. Information was presented by Jim Masek covering current standards for TIR from CEM , BNT BNR , BIS IS DRFT, DIN and SNS In general only the BIS IS DRFT changes the TIR requirement for different belt speeds. (attached) dditional aspects and topics of high speed conveying were discussed: Noise Roundness of the idler roll Dynamic Balance of the idler roll Surface finish of the idler roll Stiffness of the idler frame Stiffness of the structure ssembly tolerances and alignment of the structure and components It was discussed to continue this investigation and identify what factors are important for high speed conveying. Question was presented if CEM can fund a study for this. motion was made and passed to keep a subcommittee to continue to investigate idlers on high speed conveyors. Jim Masek, PPI (jmasek@ppi-global.com) volunteered to Chair this committee. Sub-Committee: Tom Hubbert, Syntron (tom.hubbert@syntronmh.com); Paul Ormsbee, Overland Conveyor (ormsbee@overlandconveyor.com); Paul Schmidgall, Superior Industries (p.schmidgall@superior-ind.com); ndrew Jennings, Conveyor Dynamics (Jennings@conveyor-dynamics.com); Robin Stevens, ContiTech North merica (robin.steven@ phoenix-cbs.com); Benjamin Brewer, Douglas Mfg. (bbrewer@douglasmanufacturing.com); Luis Estay, Bechtel Mining & Metals (lrestays@bechtel.com); Nick Mackenzie, Rulmeca (nmackenzie@rulmeca.com) c. 5 roll troughing idlers. i. Topic to be kept active. Discussion followed about keeping this active and most felt this was useful. Reiterated the addition to the next edition of the Conveyors for Bulk Materials book. Some felt that a standard for unequal roll length idlers would be more useful in the merica s because this is seen more often than 5 roll idlers. No motion was made to create a 5 roll idler standard. It was generally agreed to keep this item on the agenda under old business.

3 ii. Summary of figure 5.7. It was pointed out that a summary of figure 5.7 for 5 roll idlers is in the Fall 2016 meeting minutes for the Joint Idler and Pulley meeting. 5. New Business: a. Larger headings on load rating tables in 7th edition. Motion was made and passed to have larger headings in the next edition of the Conveyors for Bulk Materials book. b. Research into localized belt indentation issues in CEM G may prompt a minimum roll diameter. Discussion concerning belt failure problems with load ratings CEM G Idlers. With the current load ratings, does this lead to a minimum idler roll diameter requirement? It was recognized that this is a belt question and would need to be answered by technical members that manufacture belting. Possible someone who is a member of both CEM and RPM would present this to RPM members to determine if a minimum idler roll diameter is required. Dr. Robin Steven from ContiTech North merica volunteered to present this to RPM. c. Marketing Whitepaper. CEM Marketing Committee has asked for each committee to submit a 1 page white paper regarding an aspect of safety. Paul Ross from Douglas Mfg volunteered to submit this paper. d. Topic was brought up regarding confusion of CEM standards and International standards such as DIN and ISO. CEM standards show frame and overall dimensions and do not standardize rolls or shaft ends while International standard show roll and shaft end details and dimensions. This confusion can lead to customers using these standards to just go away from CEM and to something they are familiar with. How does CEM continue to be a leader in the world and is there a way to eliminate this confusion. Possible solutions to help eliminate confusion: Create a roll standard Explain the differences in the standards and that most or all CEM member companies can manufacture rolls and shaft end details to their specification. In addition to overall load ratings create roll only load ratings. e. Topic was brought up regarding a research paper derating of L10 life of tapered roller bearings. Was this a CEM research paper? Possible done in the 1970 s? f. Question was asked about providing running temperature for an idler bearing. What is normal and what is the maximum temperature? This lead to discussion regarding idler roll monitoring of noise and temperature. Can CEM give any direction for these questions that end users are asking about? 6. Next meeting is June 26, 2018 at La Playa Hotel, Naples, FL

4 7. Motion to adjourn was made and seconded. The meeting adjourned at approximately 10:10 am. Respectfully submitted, Jim Masek, Vice-Chair Conveyor Idler Committee

7 CEM CLSS G RETURN IDLERS B Width Width Std Base Std Base F Max Width Std Base C Max. E Drop Bolt Size Width Std Base D Max CEM G RETURN CONSOLIDTED

8 Bolt Size 0.75 CEM CLSS G TROUGHING IDLERS Trough E Max Trough K ± 1/4 Width ngle Ø7 Width ngle Ø Trough E Max Trough K ± 1/4 Width ngle Ø8 Width ngle Ø CEM G TROUGH CONSOLIDTED

9 Trough H Max C Max Width ngle Ø ll Std. Base C Max Wide Base B D Max CEM G TROUGH CONSOLIDTED

10 Bolt Size 0.75 CEM CLSS G TROUGHING IDLERS Trough E Max Trough K ± 1/4 Width ngle Ø 7 Width ngle Ø Trough E Max Trough K ± 1/4 Width ngle Ø 8 Width ngle Ø CEM G TROUGH B CONSOLIDTED

11 Trough H Max C Max Width ngle Ø ll Std. Base C Max Wide Base B D Max CEM G TROUGH B CONSOLIDTED

12 Bolt Size 0.75 CEM CLSS G TROUGHING IDLERS Trough E Max Trough K ± 1/4 Width ngle Ø 7 Width ngle Ø Width Trough ngle E Max Ø 8 Width Trough ngle K ± 1/4 Ø CEM G TROUGH C CONSOLIDTED

13 Trough H Max C Max Width ngle Ø ll Std. Base C Max Wide Base B Width Std. Base Wide Base D Max CEM G TROUGH C CONSOLIDTED

14 Bolt Size 0.75 CEM CLSS G TROUGHING IDLERS Trough E Max Trough K ± 1/4 Width ngle Ø 7 Width ngle Ø Trough E Max Trough K ± 1/4 Width ngle Ø 8 Width ngle Ø CEM G TROUGH D CONSOLIDTED

15 Trough H Max C Max Width ngle Ø ll Std. Base C Max Wide Base B D Max CEM G TROUGH D CONSOLIDTED

16 CEM Standard llowable Steel Roll Run Out Roll Length (<= 500 RPM) Diameter Diameter 5 in (127mm) >5 in (127mm) inches mm inches mm inches mm >21 to 36 >533 to >36 to 55 >914 to >55 to 98 >1397 to Sample Lot Size for cceptance Modified from Size Inpection Number NSI/SQ Z General Inspection Level II Normal Inspection Plan QL= Note: Other samplin sizes may be used if so agreed upon. CEM BELT SCLE IDLER STNDRD (1) Roll run-out, mounted TIR maximum (all rolls).

17 BNT BNT BNR The total deviation (in absolute value) presented by the roll when turning 360 and measured with a dial indicator should not exceed the values given in Table 35 for rolls up to 400 mm ( inch) in length. For lengths greater than 400 mm ( inch) rolls, admits there was an increase of 0.1 mm (0.004 inch) for each additional 250 mm (9.843 inch) in length. The measurement should be made as shown in Figure 20. ø Roll Steel Rubber ø Roll Steel Rubber (mm) (mm) (mm) (inch) (inch) (inch) Note: Other values can be set by agreement between user and manufacturer. Lot Sample cceptance Rejection Size Size Number Number n = c = Re = , ,200-3, ,201-10, Note 1, This is a sampling plan by regular simple attributes, level II, NO = 4 according to BNT NBR 5426 Note 2, c = greater number of defective parts in the sample that allows acceptance of the lot. Note 3, Re = fewer defective parts in the sample cause the rejection of the lot.

18 BIS IS Standard DRFT Table 9 Speed - v (mtr/sec)--> 3 3 > v 4 4 > v 5 Roller length - l (mm) Runout in mm > l < Run-out - The idler roller diameter, measured by a dial test indicator at any point along its length when rotated on its own bearing shall not exceed the total indicator reading in respect to belt speed as indicated in Table 9 Table 9 Speed - v (feet/min)--> > v > v 984 Roller length - l (inch) Runout in inch > l < BIS IS Standard Run-out -- The idler outside diameter, measured by a dial test indicator at any point along its length when rotated on its own bearings, shall not exceed the total indicator reading (TIR) of 1.6 mm (0.063 Inch) for idler lengths below 1350 mm (53.15 inch) and 2 mm (0.079 inch) for idler lengths of 1350 mm (53.15 inch) and above.

19 DIN Standard Concentricity Tolerance (mm) Roll diameter Roll diameter Roll Length d 133 d > 133 d 5.24" d > 5.24" upto " 0.024" 530 upto " 0.035" 900 upto " 0.063" t least 90% of a supply shall be within the stated tolerance range. Overshoots of up to 20% are permissable for 10% of idlers. Concentricity Tolerance (mm) Roll diameter Roll Length d 133 d > % 10% 90% 10% upto upto upto t least 90% of a supply shall be within the stated tolerance range. Overshoots of up to 20% are permissable for 10% of idlers. Concentricity Tolerance (in) Roll diameter Roll Length d d > % 10% 90% 10% upto upto upto t least 90% of a supply shall be within the stated tolerance range. Overshoots of up to 20% are permissable for 10% of idlers.

20 SNS Standard ; 2012 TIR (mm) Table 10 Roll diameter Roll diameter Roll Length d 133 d > 133 d 5.24" d > 5.24" " 0.028" " 0.035" " 0.063" " 0.091" Steel Rolls: When a metallic or non-metallic roll with a solid liner is tested in accordance with 7.5, the peripheral run-out shall not exceed the values given below. a) When measured within 25 mm of the end face of the roll: 0.5 mm (0.020") b) When measured at any other point across the face: see table 10. Covered rolls (rubber-lagged rolls) When a covered roll (rubber-lagged roll) is tested in accordance with 7.5, the peripheral run-out, measured within 25 mm of the end face of the roll, shall not exceed 0.5 mm. When a covered roll (rubber-lagged roll) is tested in accordance with 7.5, the peripheral run-out, measured at any point other than within 25 mm from the end of the roller, shall not exceed the values give in table 10 plus a tolerance (on thickness of the covering (lagging) material), not exceeding 0.5 mm. (see SNS ).

Conveyor Equipment Manufacturers Association

Conveyor Equipment Manufacturers ssociation MINUTES OF THE CEM FLL MEETING IDLER COMMITTEE MEETING O Hare Hilton, Chicago, IL Tuesday, September 19, 2017 1. Call to Order: The Idler Committee meeting convened