What is a BB386 bottom bracket?

What is a BB386 bottom bracket?

BB386 EVO is a road bike bottom bracket standard introduced back in 2011. The BB standard is based on a frame shell width of 86.5mm and inner diameter is 46mm.

Is BB30 the same as BB386?

A BB30 chainset is designed to work with a 68mm shell with the bearings mounted inboard. 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.

Is BB386 threaded?

MegaEvo is a threaded bottom bracket that allows the installation of a BB386EVO crankset into a standard 68mm BB shell with BSA threading.

Does BB386 fit BB30?

The BB386 EVO uses the proven 30mm alloy spindle, which already is known to reduce weight and improve stiffness. Mating this to the wider BB shell, and press fit cups, allows this crankset to fit not only the 386EVO BB shell, but also to be adaptable to threaded frames, and to BB30 frames.

What is the difference between BB30 and BB30a?

The BB30a is similar to the BB30 standard, but the frame BB shell is 5mm wider on the non-drive side. BB30a system uses thin spacers and/or a wave washer between the bearings and the crank arms to take up any slack and micro-adjust the chainline of the crank.

What is BB72?

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 size is BB30?

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.

What bearing is BB30?

Both BB30 and PF30 use a sealed bearing. The drive and non-drive side’s bearings are pre-installed inside the cups. A key difference is in the size of the BB shell. 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.