FAQ
Find the information you need quickly: Our FAQ section brings together answers to the most frequently asked questions about Walther Flender's products, applications, calculation tools, and services.
Excessive noise is often caused by misaligned pulleys, excessive belt tension, overloading of the drive system, or worn pulleys. Therefore, check the alignment of the pulleys, set the recommended belt tension—for example, using the WF-TC 1.0 belt tension gauge—and replace worn components to restore smooth drive operation.
A timing belt that appears to be longer is usually the result of a changed center distance, loose fasteners, or worn pulleys. Check the center distance and all fasteners, and replace any worn components so that the drive system functions properly again.
If a timing belt drifts off-center, the timing pulleys are often not properly aligned. Carefully align the timing pulleys and shafts and check that they are parallel so that the timing belt runs centered again.
This is often caused by high axial forces resulting from misalignment or unsuitable flanges. Check the alignment of the toothed discs, use suitable flanges, and verify the stability of the bearings and shafts.
Excessive or insufficient tension, worn pulleys, or foreign objects can significantly accelerate tooth wear. Set the correct tension—for example, using the WF-TC 1.0 belt tension gauge—replace worn components, and protect the drive system from contaminants.
Tooth breakage is often caused by overload, insufficient belt tension, or too few teeth in mesh. Check the drive configuration—for example, using the Belt Drive Navigator 2.0—adjust the belt tension—for example, using the WF-TC 1.0 belt tension gauge—and, if necessary, use a wider timing belt.
A timing belt failure is often caused by overloading, pulley diameters that are too small, foreign objects, or installation errors. Be sure to follow the recommended minimum diameters, avoid overloading, and install the belt according to our recommendations.
Excessive belt tension, overloading, or foreign objects between the timing belt and the timing pulley can accelerate wear. Check the tension—for example, using the WF-TC 1.0 belt tension gauge—remove any debris, and make sure the components you’re using are compatible.
Extreme temperatures, corrosive substances, or improper tension can cause cracks in the timing belt. Use a timing belt suitable for the application and ensure that the permissible temperature and environmental conditions are observed. Walther Flender’s Application Engineering team will be happy to assist you in selecting the right belt.
Vibrations are often caused by incorrect belt tension or improper alignment of the components. Set the recommended belt tension—for example, using the WF-TC 1.0 belt tension gauge—align the pulleys precisely, and use a tensioner pulley for vibration damping if necessary.
Signs of overload include unusual noises, excessive wear, broken teeth, or vibrations. Reduce the load or select a more powerful timing belt drive to prevent further damage. For drive design, use, for example, the Belt Drive Navigator 2.0 timing belt calculation program.
Insufficient tension can cause tooth slippage and vibrations, while excessive tension puts strain on bearings, timing pulleys, and the timing belt. Check the tension regularly and adjust it according to the manufacturer’s specifications. The WF-TC 1.0 belt tension meter, for example, can help with this.