What Is The Difference Between A Disc Brake Hub And A Regular Hub?

The disc brake hub has a mount specifically for mounting brake discs, with standard 6-nail mounting holes and a Shimano dedicated disc brake mount (similar to the locking method of flywheel cover), while the normal V brake hub does not. With the V-brake, you can also use the disc brake hub.
In terms of weight, the disc brake hub is a little heavier than the V brake, and attention should be paid to adjusting the rim to the center of the entire shaft when weaving the ring.
In addition, the V brake hub can only use V brake rings with brake sides, while the disc brake hub can use special disc brake rings or V brake rings. Individuals, such as BMX street and 24- and 26-inch street bikes, mostly do not have a front brake or even a position for the front brake, so it is also possible to use a hub without a disc mount with a disc brake ring.