Toothed idlers are appropriately used in place of bearings, by allowing the toothed belt to slide freely and lightly biting the toothed belt as it goes around a curve, thereby avoiding damage to the toothed belt.With the correct flanges and windings to ensure that the belt maintains a constant tension throughout the stroke, which is never matched by the bearingThey use a standard 5 mm bore with double grub screw holes. Suitable for connection to most motors with 5mm NEMA17 shaftsHigh-quality aluminum, fine workmanship, smooth surfaceTypes:A-With ToothColour:silverMaterial:alloySize:Bearing hole: 5mmOuter diameter (OD): 18mmSuitable belt width: 6mmPackage Contents:5 x GearsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
