Timing Belts & Pulleys
Timing belts transmit torque tooth-by-tooth — no slip, no lubrication — making them the default for positioning drives and clean power transmission.
What are timing belts & pulleys?
A timing (synchronous) belt has moulded teeth that mesh with grooved pulleys, keeping driver and driven shafts in exact phase. Profiles (T, AT, HTD 3M/5M/8M, GT classes) trade tooth strength, backlash and quietness. Because there is no slip, they suit axis drives, conveyors and any drive where position matters.
Types of timing belts & pulleys
T / AT profile belts
Trapezoidal metric profiles; AT adds a stronger tooth for stiffer drives.
HTD (3M/5M/8M) belts
Curvilinear teeth carry higher torque smoothly.
Open-length belting
Cut lengths for linear axes with clamped ends.
Timing pulleys
Aluminium or steel, pilot-bore or taper-bush, with or without flanges.
How to select timing belts & pulleys
- Profile and pitch from torque and speed.
- Belt width from the power rating tables.
- Tooth counts for the required ratio and centre distance.
- Pulley material, bore and flange requirement; tensioning method.
Not sure? Send what you have — a part number, drawing or photo — and our engineering team will confirm the selection.
Frequently asked questions
- What is the difference between HTD and T-profile timing belts?
- HTD's rounded (curvilinear) tooth engages more deeply and carries more torque for the same width; classical T profiles have more backlash but are widespread and economical. Positioning drives often use AT or GT-class profiles for stiffness.
- Can I get a matching belt and pulley set quoted together?
- Yes — send speed, torque or the existing part numbers and we quote belt and pulleys as a matched set, including bore machining where needed.
Related components
Chain & Sprockets
Chain drives move serious torque over long centre distances and rough conditions — the muscle of conveyors and heavy machine drives.
Linear Guide Rails
Profile rail guides carry heavy, offset loads with high rigidity — the standard motion element of machine tools and automation axes.
Aluminium Profile
T-slot aluminium profile turns frame building into assembly — cut, bolt, reconfigure — no welding, no painting.
Need timing belts & pulleys?
Tell us the specification, quantity and application — or just send the drawing.