With most PFBB30 systems, you have a nylon/plastic shell housing the bearings. They’re light, but they may wear unevenly under pedaling forces and lead to premature creaking or sloppy pedal feel.
Wheels Manufacturing’s latest solution is a 6061 alloy bottom bracket shell that’s machined in the US and promises to last longer. It’s available with standard sealed bearings, angular contact bearings and ceramic bearings.
All three feature silicone seals between the shell and the frame to further prevent creaking and are designed for PFBB30 frames with a 46mm ID bottom bracket shell, fitting frame widths from 61mm to 86.5mm. Dual silicone lip seals keep crud out of the bearings. Pics, specs and pricing below…
- Standard Sealed Cartridge Bearings – ABEC 3 – $49.00 – black ano
- Angular Contact Bearings – Enduro ABEC 5 – cryogenically treated races – $69.00 – red ano
- Ceramic Sealed Cartridge Bearings – Enduro ABEC 5 Ceramic Hybrid bearings – $110.00 – red ano
The angular contact option should be the longest lasting with perfectly smooth rolling. For those that want the fastest, they recommend the ceramic option, which gets nylon retainers and Rheolube grease. Available this month, and they’ll work just fine with their BB Adapter kit to fit Shimano’s 24mm spindle cranks.