Is BB92 the same as BB86?

BB86 vs BB92? 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.

What cranks work with BB92?

This means all 24mm high-end Shimano (Hollowtech II) and SRAM (GXP) cranks fit into BB92.

Is BB92 the same as PF41?

So BB92 is a PF41 system because the shell diameter is 41mm and the width is 92mm.

Is BB30 the same as BB92?

Nope. The spindle on a BB30 crankset is too large (30mm) to fit through the hole in a BB92 BB shell and still have room for bearings. The spindle size on a crankset that is compatible with a BB92 is 24mm. You can go the otherway though...

Is BB92 the same as PF92?

It's BB92. There is no “PF92” standard. BB92, BB86, BB121=PF41 The number following “BB” indicates shell width in mm. The number following “PF” indicates the I.D. of the shell in mm.

24 related questions found

What is BB86 bottom bracket?

BB86/92 bottom brackets consist of bearings pressed into cups, which are then pressed into the frame. The main dimension with this standard is the inside diameter of the BB shell: 41mm.

Is BB86 the same as BB30?

BB86 and BB30 aren't compatible, they're two different standards. I have two frames with BB86 and they've been creak-free and have decent bearing life. There's good reason that Shimano have never made a BB30 crank – it's a pile-o-poo!

What cranks fit BB86?

SRAM's GXP cranks are well suited to BSA and BB86 bottom brackets, hence the company has hardware to suit. These cranks can be fitted in larger shells however owners will have to look elsewhere for suitable hardware. BB30 cranks are best suited to large diameter shells such as BB30, PF30, and T47.

Is PF86 the same as BB86?

BB86 and BB92 are much more commonly used, as is the identical PF86 and PF92. Shimano's naming convention for its press-fit bottom bracket parts is confusing, to say the least.

Does BB92 press-fit?

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.

Are all hollowtech BB the same?

Since the spindle is part of the right crank, there's no issue of compatibility. All Hollowtech II cranks work with all Hollowtech II bearing units. Any crank that fits on one type of spindle will fit on all spindles of that type, but if the length is incorrect, the chainline/clearance will vary.

Can I use a 68mm bottom bracket in a 73mm shell?

You could install it, but it will shift your chainline, shift the centerline of your feet, clearance issues might arise on the non-drive side, and you might be leaving some BB shell threads exposed on the non-drive side as well.

What does MTB wide mean?

Simplydown said: SRAM MTB Wide refers to cranksets with a 55mm chainline designed for boost 148 rear ends. They achieve this chainline by using the same 3mm offset chainring as normal boost cranksets, but paired with a longer spindle.

What is a GXP crank?

Sram GXP is a very popular crankset standard used by SRAM. It offers an industrial based bearing arrangement and was touted as having the lowest weight and rolling resistance of any crankset bottom bracket standard.

What size are BB86 bearings?

A BB86 shell is 41mm and a 6806 bearing is 42mm on the outside diameter.

What is a BB86 frame?

BB86 is a Shimano developed bottom bracket standard. It has a shell diameter of 41mm and a width of 86.5mm. This is a popular standard and used on a variety of bikes including Canyon, Argon 18, Giant, Trek, BMC, Winspace.

Can I put any crankset on my bike?

Cranksets are not always interchangeable. Every crank is designed to work with a specific bottom bracket. Even if the cranks use the same interface (octalink, square taper, or hollow tech), switching them between bike brands or even models of the same brand is hard.

How wide is BB86?

The road standard has an 86.5mm shell width (hence BB86) whilst the mountain bike standard has a 91.5mm shell width. A number of other shell widths may also exist, though they all use the same bearing cups. More recently, bearings have shown up that allow a 30mm spindle to be used.

Is BB386 compatible with BB30?

A BB386 chainset is designed to work with a 68mm shell but the bearings are mounted outboard i.e. the crank spindle is 18-20mm longer. If you tried to fit a BB30 crank to a BB386 the spindle wouldn't be long enough to allow you to fit the non-drive crank. It is a total of around 26mm longer than std bb30 spindle.

How wide is BB92?

BB92 is a shell type that is quite common on high end mountain bikes of many brands. Also sometimes referred to as Shimano press fit or pressfit GXP, this BB uses a bearing housed in a nylon or metal shell that when pressed into the shell measures 92mm wide.

Should I grease press fit bottom bracket?

In the case of the bottom bracket, you will use the grease when you install it, whether it is threaded, press fit or similar, and in the same way when you install or clean the cranks. The point of contact of the cranks with the bottom bracket should be greased too.

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