Wheels Manufacturing PressFit 30 to Shimano Bottom Bracket

This bottom bracket is designed for frames with a PressFit 30 (PF30) shell, which has a 46mm diameter and a 68mm width. If your frame uses a different standard, such as BB30 or threaded shells, this unit will not be compatible.

Yes, this adapter is specifically engineered to allow you to run a Shimano 24mm spindle crankset on a PF30 frame. It bridges the gap between the frame's wider shell and the narrower Shimano spindle standard.

Unlike standard press-fit bearings that rely on a friction fit, this unit features a threaded two-piece design. By threading the cups together, it creates a secure, stable interface that prevents the movement often responsible for the dreaded press-fit creak.

Yes, the unit utilizes replaceable Enduro ABEC-5 Angular Contact bearings. This means that when the bearings eventually wear down, you can service the unit by replacing just the bearings rather than discarding the entire bottom bracket assembly.

Angular contact bearings are designed to handle both radial and axial loads simultaneously. This makes them more durable and smoother under the varying stresses of pedaling compared to standard radial bearings, which primarily handle load from one direction.