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Are there timing belts that don't cog?
Do HTD belts cog less than trapezoidal toothed shaped belts?
Thanks
I don't think you can be absolutely free of "cogging".
The newest belts, like Gates GT2 are about state of the art right now. They have a carbon fiber belt that doesn't stretch after initial run-in.
Be sure to use a pulley with matching grooves for the belt tooth profile.
Dick Z
DZASTR
AFAIK the GT2 is pretty much the same as the HPD and both have a miniscule amount of "cogging".
You will pay for them though.
www.integratedmechanical.ca
Per Gates catalog "PowerGrip GT 2 belts must run in PowerGrip GT 2 sprockets. PowerGrip GT 2 belts are not compatible with PowerGrip HTD sprockets, or any other sprockets on the market."
HTD sprockets have greater clearance for the belt teeth. HTD teeth have a different profile than GT 2's which have little or no clearance. GT 2 teeth have an involute form similar to gear teeth, which makes for smoother engagement and disengagement with the sprocket.
Dick Z
Add: You may find Gates' belt/sprocket interchange brochure informative. It compares Gates belts to their own sprockets as well as others proprietary tooth forms.
Last edited by RICHARD ZASTROW; 03-24-2010 at 11:49 AM. Reason: ADD:
DZASTR
Does anyone know where I can find the gt 2 power grip pulley tooth profile specs? I looked on thier website but they are not published. They have the O.D. and the pitch diameter but thats it.
Did you check out GoodYear Eagle pd style?
Goodyear® Engineered Products :: Eagle NRG
They are available at alot of suppliers.
Al.
CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Check prices on the Eagle pd's. $$$$$$$$$$$$$$$
Dick Z
DZASTR
I want to machine the pulleys myself I plan to have a form tool made to use on a fourth axis to index the number of teeth needed.Originally Posted by Al_The_Man
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