Timing Pulleys

Timing Pulleys — HTD, GT & T-Series Synchronous Belt Pulleys

Timing pulleys (synchronous belt sprockets) engage timing belt teeth for precise, slip-free power transmission and speed synchronisation. AIMS Industrial sells timing pulleys in HTD (3M, 5M, 8M, 14M) and T5/T10 profiles in aluminium and steel — for CNC machinery, robotic systems, packaging equipment, and precision industrial drives.

Timing Pulleys We Stock

• HTD Timing Pulleys (5M, 8M, 14M): HTD profile timing pulleys in 5mm, 8mm, and 14mm pitch — the dominant industrial synchronous drive standard. Aluminium pulleys for weight-sensitive applications; cast iron and steel for high-load and precision drives. Available in bore-and-keyway and taper lock hub configurations.
• T5 & T10 Timing Pulleys: European T-series (trapezoidal) timing pulleys in T5 (5mm pitch) and T10 (10mm pitch) for drives using T-series timing belts. Available in standard bore and taper lock hub configurations.
• Flanged Timing Pulleys: Flanged timing pulleys have a raised flange on one or both sides to retain the timing belt on the pulley — critical for open-face drives and conveyor systems where lateral belt retention is required.

Timing Pulley Selection Guide

• Tooth Profile Must Match Belt: HTD belt profile and GT belt profile are NOT interchangeable — the tooth form geometries differ. Always match the pulley tooth profile to the belt profile exactly. Mixing profiles reduces load capacity and may cause premature belt failure.
• Minimum Tooth Count: Timing pulleys must have a minimum number of teeth to avoid belt tooth deformation on the small pulley — typically 15–18 teeth minimum for HTD and GT profiles. Fewer teeth increases the bending stress on each belt tooth as it wraps the pulley, reducing belt life.
• Taper Lock vs Fixed Bore: Fixed bore pulleys suit permanent installations with no anticipated shaft change. Taper lock hub pulleys allow removal and reinstallation without shaft-end access — preferred for CNC axis drives where pulley replacement during machine life is anticipated.

Australian Business, Local Supply: As a proudly Australian business since 1988, we stock locally and work with trusted local Australian manufacturers and distributors to ensure fast, reliable supply.

Expert Support: Need help buying the right product for your application? Contact our team for application-specific advice or request a quote.

See our full industrial timing belts, Bus & Truck Belts and Pulley ranges.