Press-Fit
A Press-Fit bottom bracket is a type of bottom bracket design that differs from more traditional threaded bottom brackets. It uses a press-fit method to mount the bottom bracket to the bike frame without using an internal thread. This design is commonly used on modern bikes, especially mountain bikes and road bikes.
The bottom bracket is pressed into the frame
The function of a Press-Fit bottom bracket typically involves two bearing cups that press directly into the bottom bracket shell of the bike frame. These bearing cups are often made of plastic or metal and can be designed to fit specific crankshaft standards. The Press-Fit system attaches to the frame using a press fit, where the bearing cups are pressed into the corresponding drilled holes in the frame with precise fits.
More benefits of press-fit bottom brackets
Benefits of Press-Fit bottom brackets often include lighter weight, greater flexibility in terms of crankshaft standards and increased rigidity in the crankcase. However, challenges can arise with press-fit forces and potential noise, requiring careful installation and maintenance.
Lower weight than other systems
By eliminating the internal thread, the Press-Fit system can help reduce weight and allow for different crankshaft standards without the need to change the frame design. However, it's important to mention that the choice between Press-Fit and threaded bottom brackets also depends on preferences, maintenance comfort and the specific cycling application.
