Wednesday, September 22nd
7:00 am to 8:30 am EST
Benjamin Brewer, Chair
Jeff Ellis, Vice Chair
DOUGLAS MANUFACTURING CO., INC.
Welcome to CEMA’s Pulley Committee! This meeting will start promptly at 7:00 am to 8:30 am. The purpose of this committee is to Review, revise, update, establish standards, and product safety that assist member companies and/or users to accurately select/evaluate pulleys for their application. Additionally, enable the user to establish accurate criteria for selection and application of the product.
- Call to Order
- Attendance, and Introductions
- Approval of Minutes of June 17, 2021 (attached)
- Old Business
a) Unit Pulley Standard to better support unit pulley requirements (CEMA Standard No. 106) – Updates Subcommittee: Jeff Ellis, PPI (chair); Benjamin Brewer, Douglas Manufacturing Co., Inc.; Bob Hawkins, Continental Global MH; Zac Casper, Talos Engineered Products; Ted Hotvet, Van Gorp; Paul Schmidgall, Superior Industries; Don Suderman, Bunting; Eddie Geerdes, Universal Industries; Tamara Thimmel, Bryant Products Inc.
b) Use FEA to verify Belt Book Table 7.39 compared to B105.1 Table 1 to determine if smaller pulley diameters are acceptable to manufacturers in the availability chart – Updates Subcommittee: Andrew Hustrulid, Shaw Almex Industries Ltd. (chair); Alex Vitou, ABB Motors and Mechanical Inc.; Benjamin Brewer, Douglas Manufacturing Co. Inc;
c) ANSI/CEMA Standards B105.1 and 501.1 – Standard for Balancing Pulleys – ANSI Process – Updates
d) Minimum Pulley Size Selection based on Horsepower transmitted – Updates
Subcommittee: Brett DeVries, FLEXCO (chair); Chad Brown & David Keech, ABB Motors and Mechanical Inc.; Benjamin Berewer, Douglas Manufacturing Co. Inc.; David Jesse, Lassing Dibben Consulting Engineers Ltd.
e) ANSI/CEMA Standard B105.1 – Pulley and Shaft Selection, Tables 4A and 4B – Updates
Subcommittee: David Keech, ABB Motors and Mechanical Inc. (chair); Benjamin Brewer, Douglas Manufacturing Co. Inc.; Jeff Ellis, PPI; Andrew Hustrulid, Shaw Almex Industries Ltd.; Paul Ormsbee, Overland Co., Inc.; Brett DeVries, FLEXCO.i. Correction and Clarification in Tables 4A and 4B:
Original: Based on SAE 1018 material, using either a bending stress of 8000 psi from resultant load (no torque), or a free shaft deflection at the hub of 0.0023 inches per inch (tan of 8 minutes), whichever governs.
Proposal: Based on SAE 1018 material with a key seat, using either 6000 psi shear stress / 12000 psi bending stress from the resultant load (no torque) using the ASME B17C equation, or a free shaft deflection at the hub of 0.0023 inches per inch (tan of 8 minutes), whichever governs
f) ANSI/CEMA Standard B105.1, Item 2.1 Standard Pulley Diameter Proposed Changes – Updates
g) Comparison of CEMA and ISO Belt Tracking Allowances – Updates
5. New Business
6. Next Meeting – June 14, 2022, La Playa Beach & Golf Resort, Naples, FL.
Benjamin Brewer, Chair
Jeff Ellis, Vice-Chair