Synchronous Timing Pulley

Synchronous Timing Pulley is often subjected to environments with variable thermal gradients, where mismatched thermal expansion between the pulley and shaft interface can lead to loosening or fretting corrosion. To counter this, precision manufacturing includes controlled bore tolerances (H7 or tighter), and materials such as hard-anodized aluminum or alloy steel are selected based on the coefficient of expansion compatibility with the mating shaft. For elevated temperatures, pulley deformation is prevented through geometry-optimized web design, which reduces radial displacement and preserves timing accuracy under thermal stress. 

Synchronous Timing Pulley contributes to overall drivetrain stability by minimizing resonance and system harmonics. Dynamic balancing to ISO G2.5 or lower is performed during production to prevent the formation of torsional standing waves at operating RPMs. Surface finish on tooth flanks is held below Ra 1.6 µm to reduce high-frequency excitation when meshed with timing belts. Use of precise pitch tracking and concentric flange geometry ensures uniform load distribution, which suppresses noise and mechanical vibration, particularly in systems with high-speed axis reversals or load changes.