Full definition
Toothed belt with precisely molded teeth on the inner surface that mesh with grooves on a timing pulley, providing synchronous (zero-slip) power transmission. Standard tooth pitches: metric HTD 3M, 5M, 8M, 14M, 20M; imperial MXL (2.032 mm), XL (5.08 mm), L (9.525 mm), H (12.7 mm), XH (22.225 mm). Tooth profiles: trapezoidal (classic), curvilinear HTD (Gates), and modified curvilinear GT/GT3 (higher load). Cord materials: fiberglass (standard) or aramid (high load). Per ISO 5296 and ISO 13050. Speed up to 60 m/s. Used in CNC, packaging, robotics, and automotive camshaft drives.