Is BB92 the same as PF30?

Short version is NO. Standard press-fit (AKA BB92) has a 41mm (or occasionally 42mm) bore and 92mm wide shell, PF30, which is a variation on BB30 has a 46mm bore, plus a shorter shell.

Is press fit 30 same as BB30?

ARE PF30 & BB30 the SAME? No they are not the same. But they are also not all that different. 6806 is a number you’ll see describing the bearings used for both pf30 and BB30.

Is PF 86 the same as BB86?

No difference. They are one and the same bottom bracket. Well, BB86 refers to road bikes with their 68mm BB shell; BB92 refers to mountain bikes with their 73mm BB shells. BB90 is Trek’s proprietary standard and is the odd one out here.

What is the most common bottom bracket size?

On road bikes, it’s always 68mm. With mountain bikes, 68mm is most common too, but sometimes the wider version with 73mm width can be found. The diameter of the bottom bracket is 41.96mm, and the bottom bracket bearings are always pressed into the frame separately.

Do I need spacers on my bottom bracket?

Much like GXP, you don’t need to add any spacers to the bottom bracket if you have a 73mm shell, but you will need to add a 4.5mm spacer to the right-hand side of the crank axle, unless you’re using a chain guide, in which case a 2mm spacer is required instead, along with a 2.5mm spacer on the right-hand side of the …

How do I know what size crankset to buy?

The crank length represents the distance between the centre of the bottom bracket and the centre of the pedal axis. The most common lengths are 170, 172.5 and 175 mm, but it is possible to find cranks between 165 and 180 mm in the market.

What width bottom bracket do I need?

The width of a BB30 bottom bracket is 68mm or 73mm. On road bikes, it’s always 68mm. With mountain bikes, 68mm is most common too, but sometimes the wider version with 73mm width can be found. The diameter of the bottom bracket is 41.96mm, and the bottom bracket bearings are always pressed into the frame separately.

What kind of bearing does a Shimano BB92 use?

So then what’s a BB92? The BB92 standard, also known as Shimano Press Fit, uses a bearing housed in a nylon or aluminum cup that is pressed into a bottom bracket shell that measures 92mm wide. This standard is designed around the 24mm spindle diameter used by Shimano.

How big does a BB92 bottom bracket need to be?

This is a typical BB86 / BB92 bottom bracket. It fits into a 41mm diameter bottom bracket shell and has aluminum bearing cups (with a choice of ceramic bearings for greater efficiency). Shell widths range from maximum 92 mm on down. Or, more accurately, this bottom bracket design will adjust to fit a BB shell inside that limit.

What makes a Shimano bottom bracket press fit?

To meet customer needs in the best possible way, SHIMANO has developed the press-fit bottom bracket, staying focused on our final goal: total performance in pedaling. The bottom bracket axle is steadily supported by the wide placed bearings on the basis of HOLLOWTECH II technologies providing highly-efficient power transfer.

How big is a Shimano BB86 bottom bracket?

And, of course, they are the standard offerings from the market leader, Shimano. This is a typical BB86 / BB92 bottom bracket. It fits into a 41mm diameter bottom bracket shell and has aluminum bearing cups (with a choice of ceramic bearings for greater efficiency).