| Certification: | CE, ISO |
|---|---|
| Pulley Sizes: | Type F |
| Manufacturing Process: | Forging |
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A derailleur pulley is a small wheel that is used in a bicycle derailleur to guide the chain onto the different cogs on the rear cassette. There are two derailleur pulleys on a bicycle, one on the top of the derailleur and one on the bottom. The top pulley is called the guide pulley and the bottom pulley is called the tension pulley.
The guide pulley helps to keep the chain aligned with the cogs on the rear cassette. This is important for smooth shifting and to prevent the chain from derailing. The tension pulley helps to keep the chain under tension. This is important for smooth shifting and to prevent the chain from slapping against the bicycle frame.
Derby pulleys are made from a variety of materials, including plastic, aluminum, and steel. The type of material that is used depends on the type of bicycle and the intended use. For example, a mountain bike derailleur pulley may be made from a more durable material, such as steel, than a road bike derailleur pulley.
Derby pulleys are a relatively inexpensive and easy to replace part. If a derailleur pulley is damaged or worn, it should be replaced as soon as possible. Replacing a derailleur pulley can help improve a bicycle's shifting performance.
Here are some of the benefits of using a derailleur pulley:
Overall, derailleur pulleys are an important part of a bicycle derailleur. They help to improve the shifting performance of a bicycle and to prevent chain derailment.
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