PF30
These are renowned for their lack of durability especially when compared to the old square tapered ones.
I looked back over my Strava records and I reckon I have done roughly 1000 miles on the bike since I bought it in October 2019. The person I bought it off had already changed the BB so if that was a fairly new replacement, then the total mileage on it may only be around 1500 at a guess.
There are so many different types of BB used on bikes and I had trouble in finding a better option quickly so I bought like for like. A good source of BB information is here.
There are so many different types of BB used on bikes and I had trouble in finding a better option quickly so I bought like for like. A good source of BB information is here.
The crank spindle is 30mm diameter and the BB shell is 68mm wide with an internal diameter of 46mm, so a better replacement will be the Rotor PF 4630, but these are out of stock at the moment.
Once the crank is removed then getting the BB out can be a problem with push fits as they require special tools, but there is always YouTube. Watching a video on there, where he made a removing tool gave me an idea. The tool he made was basically this one.
I bought this to remove head tube cups on another bike and as luck would have it I was able to use it on the BB.
A couple of taps with the rubber mallet and they were out.
Keep a note of the order they were fitted.
Replacing the new BB , its marked which side goes where.
This tool I made to clamp the head set cups in place and its ideal for this job too, cheap and all the bits from a hardware store.
All back together and only a slight adjustment to the front mech was needed.
How long will it last, we'll see.
