Timing Belts

Timing belts are endless toothed belts that mesh positively with profiled pulleys to maintain a fixed speed ratio and angular relationship. Their tensile cords limit stretch, while shaped teeth transmit motion without intentional slip in indexing, automation, engine and positioning drives.

Key facts

Family: Power Transmission
Common types: Trapezoidal tooth, Curvilinear tooth, Metric polyurethane belt, Double-sided belt, Open-ended belt, High-torque profile
Materials: Neoprene, Polyurethane, Glass-fibre cord, Steel cord, Aramid cord, Polyamide facing
Used in: CNC axes, 3D printers, Packaging machines, Robotics, Textile machinery, Engine timing

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Types

Trapezoidal tooth
Curvilinear tooth
Metric polyurethane belt
Double-sided belt
Open-ended belt
High-torque profile

Materials

Applications

CNC axes
3D printers
Packaging machines
Robotics
Textile machinery
Engine timing

What to send for a quote

tooth profile and pitch
pitch length
belt width
material and cord
pulley tooth counts

Questions about timing belts

What should I send to identify timing belts?

Send tooth profile and pitch, pitch length, belt width, material and cord, pulley tooth counts. Provide tooth pitch and shape, since equal-length belts with different tooth geometry cannot mesh with the same pulleys. A clear photograph, drawing or readable reference can resolve details that dimensions alone do not show.

How should I select timing belts?

Choose profile, pitch, width and reinforcement from torque, speed, positioning accuracy, pulley sizes, environment and tensioning. Confirm the mating parts and operating environment before ordering, since an apparently similar size can use a different profile, material or internal arrangement.

Last updated: 2026-10-08