This is where the down tube, seat tube and chainstay join and houses the crank and crankset. It houses either an adjustable bearing or a cartridge bearing.
The mechanism at the bottom of the bicycle frame which holds the spindle and crank.
The bottom bracket is where the downtube, seat tube, and chainstays come together. A spindle passess through the bottom bracket, and the cranks attach to the spindle.
the bearing assembly to which your crank arms attach
A structural support located on the bottom section of the door which provides for attachment of the lifting cables on the sectional doors. Also referred to as Bottom Corner Bracket. (Note: Track rollers may have a separate door attachment in some door designs.)
(BB) pedal axle & bearings, sometimes called boom-bracket.
This is the part tha your cranks attach to that allows them to spin freely. A Bottom Bracket Assembly is usually composed of the crank spindle, bearings and bearing cups. All that stuff presses or threads in to the BB Shell which is part of the frame.
Part of a frame where the pedals revolve.
Lifting cables are attached to this structured support
A group of moving and non moving parts that the cranks attach to. It is made up of bearings, a spindle, and cups.
The spindle the runs through the bike frame that the cranks and pedals are connected to.
A bicycle component that consists of the crank axle (bottom bracket spindle) and ball bearings. Crankarms are bolted onto the bottom bracket.
the part of the frame where the crankset is installed. Also, the axle, cups and bearings of a traditional crankset, or the axle, retainer rings and bearing cartridges of a sealed crankset.
A hole in the base of a bike frame where the axle unit is attached.
Can refer to either the short threaded tube that runs perpendicular to the rest of the frame tubes where the cranks attach, or the actual set of spindle and bearings that threads into the frame.
There are two bottom brackets, or corner brackets, on a garage door – one on the right, and one on the left. The lifting cables are attached to the bottom brackets on most sectional doors.
The bottom bracket on a bicycle contains an axle to which the crankset is attached and the bearings that allow the axle and cranks to rotate. (The s and pedals are attached to the cranks.) The bottom bracket fits inside the bottom bracket shell, which is part of the bicycle frame.