The GT2 6 mm 20 Teeth Timing Pulley is a precision mechanical component designed for smooth and accurate motion transmission in belt-driven systems. Commonly used with GT2 timing belts, it is ideal for 3D printers, CNC machines, robotics, and linear motion assemblies where low backlash and precise positioning are essential. The 20-tooth design offers a balanced combination of torque, speed, and resolution for stepper motor–based motion systems.
Core Pulley Specifications
• Pulley Type: GT2 timing pulley
• Tooth Profile: GT2 (2 mm pitch)
• Number of Teeth: 20
• Belt Compatibility: GT2 timing belt (6 mm width)
Mechanical & Interface
• Bore Diameter: Typically 5 mm (motor shaft dependent)
• Fixing Method: Grub screw / set screw
• Material: Aluminum alloy
• Mounting: Direct fit on stepper motor shaft
Performance Characteristics
• Smooth and quiet operation
• Low backlash for precise motion control
• Suitable for high-speed linear motion
• Consistent belt engagement and grip
Physical Characteristics
• Lightweight aluminum construction
• Compact size for tight assemblies
• Precision-machined teeth profile
• Durable and wear-resistant surface
Compatibility
• NEMA 17 stepper motors (5 mm shaft)
• GT2 6 mm timing belts
• 3D printers (X/Y axis)
• CNC and laser engraver motion systems
Key Advantages
• Accurate motion transfer with minimal slip
• Ideal for precision positioning systems
• Easy installation with set screw locking
• Widely used standard in motion control
Technical Insights
• GT2 profile reduces vibration compared to T-type belts
• 20-tooth pulleys offer good resolution without sacrificing speed
• Proper belt tension improves lifespan and accuracy
• Alignment is critical for smooth operation
Applications
• 3D printer X and Y axis drives
• CNC machines and engravers
• Linear motion rails
• Robotics and automation systems
• DIY motion control projects
Pro Tip
• Ensure the pulley set screw is tightened on the motor shaft flat
• Maintain correct belt tension to avoid skipping
• Use matching GT2 belts only (not T2 or MXL)
Package Includes
• 1 × GT2 6 mm 20 Teeth Timing Pulley