The tub vibratory machine is a horizontal urethane lined machine with a u-shaped bottom and an open top. It can be manufactured with a variety of channel diameters and lengths making it an excellent choice for long or large parts. The tub can also be divided to run different parts using different media. The tub, built with extended lengths, lends itself to straight-line automation of parts.

The tub vibratory machine generates quite a bit more energy than rotating barrels and a minor amount of energy faster than bowl vibratory machines.

The system is commonly powered or vibrated by a shaft with an eccentric attached to the tub.

The tub type machine comes with a chemical collection reservoir from which the compound can be recycled back to the tub with the help of a pump. This makes the process more economical.