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Category: Bandsaws / Maintenance / Wheel Tyres
Topic: New bandsaw wheel tyre appears too small or is difficult to install
Problem
When replacing the rubber tyre on a bandsaw wheel, the new tyre may appear significantly smaller than the old one.
This can give the impression that the replacement part is the wrong size.
Technical Explanation
Bandsaw wheel tyres are generally designed to fit tightly around the wheel to prevent movement or slipping during operation.
Over time, the original rubber tyre may become worn, stretched or deformed.
Therefore, comparing the circumference of an old tyre with a new one is not always a reliable way to determine whether the replacement is correct.
Important: Always verify that the replacement tyre is compatible with the specific bandsaw model and wheel diameter before installation.
General Installation Instructions
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Disconnect the power supply. Ensure the machine cannot be started accidentally.
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Remove the saw blade according to the manufacturer's instructions.
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Remove the old wheel tyre from the bandsaw wheel.
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Clean the wheel thoroughly. Remove dirt, adhesive residue and any remaining rubber.
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Position the new tyre over one section of the wheel rim.
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Secure the fitted section, if necessary, using a suitable non-damaging clamp.
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Gradually stretch and roll the remaining tyre over the wheel rim, working around the circumference until it is fully seated.
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Use a rounded plastic or wooden tool if necessary. Avoid sharp metal tools that could damage the tyre.
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Check the installation. Ensure the tyre is evenly positioned, properly seated and free from twists.
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Reinstall the saw blade and check blade tension and tracking according to the manufacturer's instructions before operating the machine.
Important Notes
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New bandsaw wheel tyres can be extremely tight and may require considerable effort to install.
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A tight fit is normal for many types of wheel tyres.
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Do not apply excessive force if the tyre cannot be installed. Verify the dimensions and compatibility first.
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Heating or soaking the tyre in warm water should only be considered if recommended by the manufacturer for the specific material.
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Some bandsaw wheel tyres require adhesive or special installation procedures. Always follow the manufacturer's instructions.
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Never operate the bandsaw until the tyre and saw blade have been correctly installed and checked.
Technical Reference
An illustrated general installation guide is available here:
https://powertecproducts.com/content/71560-71562.pdf
Please note: This guide illustrates a general installation method. It is not a manufacturer-specific procedure for every bandsaw model or tyre material.
Internal Technical Note
Reference machine: JET JWBS-18Q bandsaw.
A customer reported that a new black wheel tyre appeared significantly smaller than the original worn white tyre.
The replacement tyre was confirmed as suitable for the machine.
The difference in apparent size was consistent with the tight fit required for a new wheel tyre and possible wear or deformation of the original tyre.
Conclusion: A new wheel tyre appearing smaller than the old one does not necessarily indicate an incorrect replacement part. Compatibility and dimensions must always be verified before installation.
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