Coredump,
<On drives using a low installation tension, small pulleys, and light loads, the backlash of the
PowerGrip GT system will be slightly better than the trapezoidal timing belt system. However, with
increased tension and/or loads and/or pulley sizes, the performance of the PowerGrip GT system
becomes significantly better than the trapezoidal timing belt system.
The PowerGrip GT system is an extension of the HTD system with greater load-carrying
capacity. HTD was developed for high torque drive applications, but is not acceptable for most
precision indexing or registration applications. The HTD design requires substantial belt tooth to
pulley groove clearance (backlash) to perform>
Ou, en français, pour les systèmes avec tensions/couple fiables, presque aucune différences entre trapézoïdal et powergrip, mais pour les plus puissantes( c'est a dire, nos utils), le powergrip et assez mieux.
Le système HTD et pour haut couple et ce n'est pas un bon choix pour précision.
Ces informations viennent du document Gates (page T5) et il y a aussi des explications plus profondes sur page T9.
Simon