Vibratory tumblers come in a wide range of sizes and shapes. The configuration of the vibe will determine the tumbling action of the media and parts. Bowl style tumblers will turn the load over and around the circumference of the bowl (3-D tumbling). A tub style tumbler will simply turn the load over (2-D tumbling) but offer the possible for tumbling long parts since there are no ‘turns’ in the vibe. Tub vibes are also generally more aggressive than bowls.
While most bowl style vibratory tumblers have a similar configuration (think: large doughnut), tub vibes come in a few styles. Some tubs are angular on the bottom with straight sides like a rectangle. This type of set-up is the most difficult to ‘rotate’ the load and can be very aggressive on the parts. Tubs that are more cylindrical in shape turn the load over very quickly. This can sometimes lead to longer cycle times but is better for sensitive or fragile parts. Vibratory tubs with rounded corners at the bottoms offer an excellent balance of tumbling action and aggressiveness. The systems offered by C & M Topline (the DB series) are an excellent example of this type of vibratory tumbler.