The Shimano Press Fit BB72 Bottom Bracket is a quality, high performance bottom bracket which is available for use with road bikes. Compatible with frames for the new oversize BB standard (86,5x41mm BB case size). Features. Complete Ultegra level press-fit bottom bracket assembly for Shimano HollowTech II road cranks.
What is Shimano BB72?
Shimano BB72 Press Fit Road Bottom Bracket, for use with 86.5mm frames. Complete Ultegra level press-fit bottom bracket assembly for Shimano HollowTech II road cranks. Cups are made from fibre reinforced polymer material which reduces the risk of frame noise and damage.
What is the difference between BB71 and BB72?
The b vs a distinction was presumably too subtle so they quickly renamed SM-BB71-41b to SM-BB72-41b, so that BB71 is for MTB, and BB72 is for road. As they continue to sell BB71 for MTB, it doesn't seem likely there was any improvement or update between BB71 and BB72. The BB71 and BB92 advertise 'small ball bearings'.
What is BB71?
The Shimano BB71 Road Press Fit Bottom Bracket is a high-quality Ultegra level bottom bracket component for use with Shimano HollowTech II road chainsets.
Is BB71 same as BB86?
Now in essence the BB71 and BB91 are both the same as BB86(!). She'll width is 86.5mm.
29 related questions foundWhat 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 BB92 the same as BB71?
You're on the right track. BB91 is a model code, BB92 is a frame format (as is BB90, although it's actually 89.5mm). BB91 (and BB71 for a lower-spec version) will fit both BB90 (with a 2.5mm spacer) and BB92 (no spacer). However, just to be a pain in the arse, there are two diameters, 41mm & 42mm.
What is press fit bottom bracket?
Press Fit Shells. Press fit bottom bracket frame shells use a simple bore with no internal threading. The bearing or bearing cup will be slightly larger than the bore of the frame and is pressed inside the shell. This creates an interference fit, also known as a press fit.
What is BB30 bottom bracket?
The BB30 bottom bracket allows you to pair 30mm spindle cranks to 42mm inner diameter bottom bracket shells. Cannondale pioneered this standard along with specially-designed cranks and many have found the benefits to them. Road versions have a 68mm width, MTB has 73mm.
Does Shimano make a BB30 crankset?
Leave it to Wheels Manufacturing to come up with a nicely executed solution. Their BB30 Adapter for Shimano cranks makes the fitment of Shimano road cranks to BB30 frames a simple affair. The Wheels Manufacturing BB30 Adapter consists of two reducer sleeves turned down from solid blocks of Delrin.
Why does my BB30 creak?
The leading cause of BB30 bottom bracket creaking is bearing migration within the frame bb shell during use. The bearings shift around a minute amount, resulting in the dreaded creaking sounds. Typically somebody greases the bearings to fix it. This only masks the problem, or more often, exacerbates the problem.
Can I fit a BB30 bottom bracket?
BB30 fits into a 42mm shell—a shell with an internal diameter of 42mm. PF30 bearings fit into bb shells with an internal diameter of 46mm.
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.
Is press-fit better?
After a decade or so of press-fit bottom brackets being the dominant system on high-end road bikes, there has – to almost universal acclaim – been a notable return to threaded bottom brackets in the last few years.
What is the advantage of press-fit bottom bracket?
There are benefits to press-fit bottom bracket cups. They are lighter than traditional threaded cups because there's no metal sleeve required in the bottom bracket shell. They can also allow for wider shells and correspondingly bigger frame tubes, for improved stiffness without an adverse effect on pedal-stance width.
What is the difference between BB30 and BB86?
Measure your BB shell width - BB30 shell is usually 68mm wide whilst BB86/90 is 86.5mm i.e. you may need a spindle 18.5mm longer. For press-fit BBs for 41mm dia shells and 30mm spindle, the bearings are very small so don't expect them to last very long.
Are BB86 and BB92 the same?
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 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. PRODUCT FILTER.
What is bsa30?
BSA comes from British Standard Cycle, aka English threading. English threading on road bikes means a 68mm wide, 34mm inside diameter shell with reverse threading on the drive side. It's the most common threaded standard employed today.
What is BB30 crank?
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.
Is BB30 same as BSA?
Re: BSA and BB30
BSA is English standard and have screw thread inside the hole ,usually use in shimano,while BB30 is Italian standard and don't have screw thread, usually use in CP.
Which Loctite for BB30 bearings?
Apply Loctite® 609 to the bearing surfaces of both BB cups.
How long do BB30 bearings last?
If you bought the bike 5 years ago and they're just starting to make noise now I'd recommend replacing the next set after 5 years. Of you could just take the chain off the rings and spin the crank...if they're worn you'll feel it.
