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What is Preload? Why should it be adjusted?Updated a year ago

What is Preload? Why should it be adjusted?

Bearing preload is the amount of side force placed on a bearing. Too little preload allows for play in the system, while too much preload results in unnecessary drag or binding. M-Pulse hubs have adjustable bearing preload on both the front and rear hub, allowing for precise tuning and wheels that spin perfectly smooth: video instructions

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