Timing pulley GT2 20T for 6mm belt — 5mm bore

GT2 timing pulley 20T for 6mm belt with a 5mm bore is a compact drive pulley designed for belt-driven motion systems requiring the GT2 tooth profile. It pairs with 6 mm wide GT2 belts to provide accurate, low-backlash transmission for light to medium-duty applications such as 3D printers, small CNC machines and desktop automation. The 20-teeth geometry offers a balance between torque transmission and positional resolution in systems where a 5 mm shaft interface is used.

Advantages

This GT2 20T pulley is made to ensure consistent meshing with GT2 profile belts, reducing belt jump and slippage. The 5 mm bore simplifies installation on standard metric shafts without the need for adapters. Its compact 20-tooth diameter helps keep rotational inertia low while delivering repeatable motion accuracy suitable for precision positioning. The pulley is compatible with common hobby and light-industry motion components, enabling straightforward integration into existing drives.

Suitable for

• Belt-driven linear motion in 3D printers and CNC machines
• Small rotary drives and indexing mechanisms
• Light automation and robotics projects
• Replacement or upgrade of existing GT2 belt-pulley assemblies

Key specifications

• Tooth profile: GT2
• Number of teeth: 20
• Belt width compatibility: 6 mm
• Bore diameter: 5 mm
• Application: belt-driven linear and rotary motion

How to use

Mount the pulley on a 5 mm shaft ensuring a secure fit; if the shaft is slightly oversized or undersized, use an appropriate adapter or confirm tolerance compatibility. Align the pulley with its mating GT2 belt and corresponding pulley(s) to avoid lateral misalignment. Tension the 6 mm GT2 belt to the manufacturer’s recommended tension to prevent skipping while avoiding excessive preload that increases bearing load. Check for smooth rotation and re-tighten any set screws or retaining hardware after initial operation.

Usage recommendations

For best performance, pair this 20-tooth GT2 pulley only with genuine GT2-profile 6 mm belts and ensure pulleys across the drive share the same tooth profile. Regularly inspect belt tension and pulley alignment in periodic maintenance to maintain positional accuracy and prolong component life.