Precision 24-tooth, 3 mm pitch aluminium timing pulley engineered for reliable, low-wear power transmission. Key benefits Accurate motion: 3 mm pitch and 24 teeth deliver consistent, predictable belt engagement for precise positioning. Durable and corrosion-resistant: high-quality aluminium alloy with surface oxidation treatment provides a smooth, rust- and corrosion-resistant finish for long service life. Stable belt tracking: double-flanged design keeps the belt aligned and reduces side slip in tight or repetitive motion applications. Easy mounting: designed to be secured with two fasteners (2 × M4 or 2 × M5), enabling a rigid connection to motors and shafts. Main specifications Pitch: 3 mm Teeth: 24 Outside diameter (OD): 22.16 mm Bore options: 4 / 5 / 6 / 6.35 / 8 / 10 / 12 mm Material: Aluminium alloy Surface finish: surface oxidation treatment (anodized-style), anti-corrosion Flange: double Fixing: 2 × M4 or 2 × M5 Compatibility and performance Designed for use with 3 mm pitch timing belts and precision transmission systems. Well suited to stepper motors and other small drive shafts thanks to multiple bore sizes. Smooth machined surface reduces belt wear and helps maintain repeatable motion over time. Typical use scenarios 3D printers: Replace or upgrade X/Y belt pulleys to improve positional accuracy and reduce belt drift. CNC machines and engraving equipment: Use in belt-driven axes for precise, low-backlash linear motion. Robotics and automation: Mount on stepper motors or reduction shafts for compact, reliable transmission in pick-and-place or small robotic assemblies. Installation notes Choose the bore size that matches your shaft (options: 4, 5, 6, 6.35, 8, 10, 12 mm). Secure the pulley using two fasteners (M4 or M5) as your setup requires to ensure a firm, concentric fit. Double flanges help maintain belt alignment; verify belt width and tension to avoid premature wear. What this pulley solves Replaces worn or low-quality pulleys to restore smooth, accurate motion. Reduces maintenance by resisting corrosion and minimizing belt wear. Provides flexibility through multiple bore sizes and straightforward mounting for quick integration into existing systems. This pulley is a practical choice when you need a compact, corrosion-resistant component that delivers consistent belt engagement and durable performance in 3D printers, CNC machines, stepping motor drives, and other precision transmission applications.