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MacRae's Blue Book

 


| Groundbreaking of New Facility! |
 On Friday, May 14, 2010 GLB broke ground for our new 23,000 square foot building on the lot adjacent to our current facility.  We hope to move in by October 2010.  Our new facility will allow us to increase our efficiency and will improve our productivity.
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| Belt Tracking Issues? |
 Omni has teamed up with Great Lakes Belting and Habasit America to introduce Trackmate 120 EMB. TM120 EMB (a non-woven belt) offers all of the tracking advantages of other Habasit Trackmate products in a very cost effective solution that can solve many of the tracking issues encountered with uniply belting.
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| New Product Announcement |
GLB is pleased to announce that we now have the capacity to weld baseless corrugated sidewall to PVC and PU belting! Our equipment allows us flexibility to weld 1-1/8” high to 4” high sidewalls.
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Conveyor Belt Tension Calculations
TC = F1 x L x CW
 F1 = .035" (Normal friction factor for average conditions (over 20 degree F) to move empty belt).
L = Belt length (feet).
CW = Weight of conveyor belt components (See Table A in Engineering Handbook).
 
TL = F2 x L x MW

F2s = .04" (Normal friction factor to move load horizontally).
L = Belt length (feet).
MW = Material weight (lbs. per lineal foot)

MW =
33 TPH
Belt Speed (fpm)
or
 MW =
Total Material Load in Lbs.
L

H = Difference between elevation of terminal pulleys (ft.)
TH = H x MW
TE = TC + TL + TH

Second, additional tension must be added to the effective Belt Tension (Te) to prevent slippage on the drive pulley. This is called Slack Side Tension (Ts), or commonly called T2.
  • Ts = D x Te
  • D = Drive factor (See Table B in Engineering Handbook).

Next, the total tension To = Te + Ts
To is the total operating tension, or commonly called Allowable Working Tension, and is expressed in PIW (pounds per inch of width). To is sometimes referred to as TL.

 

 

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