A highly recommended accompaniment to the Gates Powergrip® 2GT Belt. Available in a selection of sizes.
These come in standard 5mm bore
Toothed Idlers used appropriately in place of bearings prevent damage to the belt's teeth by allowing it to glide freely and gently cups its teeth as it traverses around the curve.
Smoothed Idlers are purposely designed, with correct flanges and clearance to ensure a belt retains a constant tension throughout its entire stroke in a way bearings could never match.
For over 100 years Gates Corporation has earned itself a reputation as a pioneer of power transmission and fluid power solutions, and amongst their high-quality range of products, Gates 2GT drive belts are considered second to none.
E3D blog on toothed idlers