45T HTD5M Synchronous Timing Pulley — 15 mm width, bore options 10 / 12 / 14 mm, AF keyway Key benefits Precise timing and positive power transmission: 45 teeth HTD5M profile ensures accurate belt engagement for repeatable motion control. Multiple bore sizes for better compatibility: available in 10 mm, 12 mm and 14 mm bores to match common motor shafts and reduce the need for adapters. Secure torque transfer: AF keyway design with dedicated keyway dimensions provides reliable coupling between shaft and pulley under load. Compact, narrow-width profile: 15 mm belt width supports compact drive layouts while maintaining belt stability. Accurate sizing for precision applications: machined to specification to minimize backlash and ensure consistent mechanical performance. Technical specifications Pulley type: 45T HTD5M synchronous timing pulley Belt profile: HTD5M (5 mm pitch) Width: 15 mm Bore sizes: 10 mm, 12 mm, 14 mm Keyway type: AF keyway Keyway dimensions: 4 mm and 5 mm key options for applicable bores; 14 mm bore supplied with a 5 x 2.3 mm keyway Typical applications CNC routers and milling machines: use for axis drive where repeatable, backlash-minimized motion is required. Robotics and automation: ideal for joint or linear drives that need compact, reliable timing belt power transmission. 3D printers and small production equipment: fits common motor shafts for synchronized belt-driven motion and precise positioning. What to check before ordering Confirm shaft diameter and whether a 4 mm, 5 mm, or 5 x 2.3 mm key matches your shaft and key. Verify compatibility with HTD5M belts and a 45-tooth pulley ratio for your desired speed/torque characteristics. Ensure 15 mm belt width is appropriate for belt strength and routing in your system. This pulley provides a straightforward, accurately sized solution for HTD5M belt drives where reliable timing, secure keyway coupling, and multiple bore options are required.