Conveyor Belt Speed Calculator
Convert pulley RPM and diameter to belt speed in m/min, m/s, or ft/min
Last updated: April 2026
Calculate conveyor belt speed from pulley diameter and RPM. This tool is essential for packaging engineers, maintenance teams, and production managers who need to match belt speed to line throughput on heat sealers, shrink tunnels, and conveyor systems.
Simply enter your drive pulley diameter and rotational speed to get an instant belt speed result in metres per minute, metres per second, or feet per minute. The calculator uses the standard linear velocity formula used across Australian and international engineering standards.
Knowing your exact belt speed helps you optimise dwell time in heat sealing zones, synchronise multi-stage packaging lines, and troubleshoot speed-related defects like weak seals or product jams.
Enter Pulley Details
Outer diameter of the drive pulley
Rotational speed of the drive pulley
Primary result unit
Belt Speed Formula
The standard formula for calculating linear belt speed from pulley diameter and RPM is:
Where D = pulley diameter in millimetres, RPM = revolutions per minute, and dividing by 1000 converts from millimetres to metres.
How to Use This Calculator
- Measure the outer diameter of your drive pulley in millimetres. If you only know the radius, double it.
- Find the RPM of the drive pulley. This is usually on the motor nameplate or gearbox specification sheet. If using a variable speed drive (VFD), use the actual operating frequency.
- Enter both values and select your preferred output unit. The calculator shows all three units simultaneously.
- Use the result to match your belt speed to your packaging line requirements or to verify existing machine settings.
PTFE Belts for Conveyor Systems
GORTEF supplies PTFE heat sealing belts and heavy-duty PTFE belting for conveyor systems across Australia and New Zealand. Our PTFE-coated fibreglass belts handle continuous operating temperatures up to 260°C and provide excellent non-stick release properties for packaging, food processing, and textile manufacturing applications.
Frequently Asked Questions
Check the motor nameplate for the rated RPM, then account for any gearbox reduction ratio. For example, a 1440 RPM motor with a 24:1 gearbox gives 60 RPM at the drive pulley. If your system uses a variable frequency drive (VFD), the actual RPM will depend on the frequency setting.
Most continuous band heat sealers operate at belt speeds between 5 and 25 metres per minute, depending on the film type and seal width. Thicker materials and wider seals require slower speeds to allow sufficient heat transfer. Shrink tunnels typically run at 10 to 40 m/min depending on the tunnel length and film shrink rate.
The formula uses the pulley outer diameter, which gives the speed at the pulley surface. In practice, a thicker belt increases the effective diameter slightly. For most PTFE conveyor belts (0.1 to 0.5 mm thick), the difference is negligible. For belts thicker than 3 mm, add the belt thickness to the pulley diameter for a more accurate result.
Why Choose Gortef?
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