GT2 16T toothed idler pulley with bearing for 9 and 10 mm belts, 3 mm bore

GT2 16-tooth idler pulley with an integrated bearing, designed to guide or tension the toothed side of 9 and 10 mm GT2 belts on a nominal 3 mm axle or screw.

Its 16-tooth format provides a compact belt path, while the side flanges help keep the belt within the engagement area when the system is correctly aligned.

Features

• Type: toothed idler pulley with bearing.
• Profile: GT2 / 2GT, 2 mm pitch.
• Number of teeth: 16.
• Compatible belt widths: 9 and 10 mm.
• Bearing inner diameter: 3 mm.
• Nominal mounting: 3 mm axle or screw, usually M3.
• Body material: aluminium.
• Bearing: integrated.
• Side flanges: yes.

Installation

The screw should secure the bearing inner race without pressing against the flanges or preventing the pulley body from rotating. Use spacers that keep the belt aligned with the rest of its path.

Check that the pulley rotates freely after tightening. The pulley and belt teeth should engage correctly; misalignment or excessive tension can increase noise and accelerate wear.

Compatibility

It is compatible with 2 mm-pitch GT2 belts in 9 or 10 mm widths, including our wear-resistant 9 mm GT2 belt, 9 mm POWGE GT2 RF belt and wear-resistant 10 mm GT2 belt.

It should run against the toothed side of the belt. If the back is the contact surface, use the GT2 smooth 16T-size idler for 9 and 10 mm belts.

This is not a motor drive pulley: the bearing allows the body to rotate freely around the axle. It is also not a direct replacement for a 20T pulley, as changing the size modifies the belt path, bending radius and effective belt length.

It can be used in 3D printers, CNC machines and custom mechanisms that jointly specify 16 teeth, an M3 mounting and a 9 or 10 mm belt. Matching only one of these characteristics does not guarantee compatibility.

Contents: 1 idler pulley with bearing.