Timing pulley gear 20T for GT2 belt 10 mm, bore 5 mm, OEM

OEM timing pulley gear with 20 teeth designed for GT2 profile timing belts with a 10 mm width and a 5 mm bore. The pulley is made to engage precisely with GT2 belts, providing consistent tooth contact and reliable motion transfer in belt-driven systems. It is intended for use as a replacement or retrofit component for compatible 3D printers, CNC machines, linear actuators and other motion control assemblies that require a compact pulley with accurate pitch engagement.

Advantages

This 20-tooth pulley matches the GT2 tooth profile for accurate belt tracking and reduced backlash. The 10 mm belt width compatibility ensures stable load distribution across the pulley, and the 5 mm bore supports direct mounting on standard 5 mm shafts or axles. The design offers simple integration into existing belt drives and helps maintain consistent positional accuracy in repetitive motion tasks.

Suitable for

• 3D printer X/Y belt drives and extruder feed mechanisms
• CNC machines with GT2 belt-based linear motion
• DIY and retrofit projects requiring matched GT2 pulleys
• Light to medium duty linear actuators and positioning systems

Key specifications

• Number of teeth: 20
• Belt profile compatibility: GT2
• Belt width compatibility: 10 mm
• Bore diameter: 5 mm
• Function: timing pulley for synchronous belt drives

How to use

Mount the pulley onto a 5 mm shaft or axle ensuring the bore is clean and properly aligned. Secure the pulley using the appropriate set screw, clamp or retaining method provided by your system to prevent axial movement. Fit a GT2 10 mm belt over the pulley and any mating pulleys, set belt tension according to the drive manufacturer's guidelines, and verify smooth tooth engagement through a full range of motion. Check alignment and tension after initial operation and periodically during regular maintenance.

Usage recommendations

Use this pulley with GT2 profile belts of 10 mm width and shafts close to 5 mm diameter for optimal performance. Avoid over-tightening set screws to reduce the risk of shaft damage and inspect the pulley and belt periodically for wear to maintain positional accuracy.