Are BB30 and PF30 interchangeable?
Yes. Same standard, different installation into frame though.
What is the difference between a BB30 and PF30 bottom bracket?
A BB30 bottom bracket simply consists of two 6806 bearings pressed directly into the bottom bracket shell of a frame with a 42mm inside diameter and usually employing 2 retaining clips to set the depth of the bearing. A PF30 frame has a shell slightly larger than BB30 (46mm compared to 42mm).
What diameter is a BB30?
42mm
The BB30 bottom bracket shell is typically 68mm (road) or 73mm (mtb) wide with an inside diameter of 42mm. Originally the BB30 system was designed to use 30mm diameter crank spindles. However, frame’s with BB30 shells can be used many other sized crank spindles.
What are BB30 bearings?
BB30 bottom brackets have a 68mm shell width and a 42mm inner diameter. The bearings have a 30mm inner diameter which mates with the 30mm outer diameter of BB30 cranks. ROTOR makes the ALDHU, VEGAST, 3D30 and 3D30+ cranks with 30mm thru-axles. This bottom bracket allows you to install those cranks.
What is a PF30 bottom bracket?
PressFit-30 (PF30) bottom brackets are a separate component pressed directly into the frame. The PF30 bottom bracket shell is typically 68mm (road) or 73mm (mtb) wide with an inside diameter of 46mm. The bearings are pressed into cups and the cups then pressed into the frame.
Can you convert BB30 to threaded?
The FSA BB30 Threaded Adapter presses into a BB30 bottom bracket shell with 42mm inner diameter (ID) and 68mm width to allow a threaded bottom bracket (1.370″ x 24 TPI) to be installed.
What’s the difference between BB30 and PF30 bottom bracket?
What is also common to both is that the bearing or bearing cup is pressed into the bottom bracket shell. Thus the BB30 standard which predated PF30 (PF30 was designed in reaction to BB30’s shortcomings) introduced the idea of installing bearings directly into the bb shell.
What’s the difference between BSA and BB30 bearings?
Overall weight decreased with the integrated crank that replaced the 3-piece spindle-plus-cranks system. BB30 however brings the bearings back inside the bb shell. Sure, the BB shell diameter is still bigger than on the standard BSA 34.9mm bottom bracket shell.
What is the internal diameter of a PF30 bearing?
6806 is a number you’ll see describing the bearings used for both pf30 and bb30. This is the bearing category designation. The 6806 bearing has an -ID (internal diameter) of 30mm which is the OD (Outer Diameter) of the crank spindle -OD of 42mm -Width of 7mm (the visible race) In the case of a bb30,…
Why is the BB30 bottom bracket creaking?
BB30 quickly gained a reputation for creaking. The thing is, the BB shell requires extremely precise machining in order for the bearings to sit firmly in the shell. You also need someone with a lot of experience to correctly install them. You don’t want just anyone banging the bearings into the BB shell.