Most applications today using directional blasting cabinets require hand-held guns for part processing but there are some parts that process better and faster using batch loads. This is the function of all tumble basket and tumble barrel models.
All Media Blast Tumble Barrels are listed as machine options. While the option can't be purchased without purchase of a machine model, this does allow the option to be added to any machine model, wet or dry, with and without pneumatic conveyor, for standard to ultra-fine abrasive.
The TB-4 is a full production Tumble Barrel Option with a square cabinet design and no manual blasting station. It can use the largest barrel size, 22" diameter, but also is available with a smaller barrel installed for short part loads. Because it's a barrel and not a basket it has the fastest random part mixing for the fastest possible cycle time only requiring a single gun inside the barrel. The TB-4 uses two variable speed drives, two 1-1/2" diameter support shafts and two 22" diameter barrels for up to 50-pound part loading or one smaller barrel for smaller short loads. This unit normally has a cycle time of 20 minutes for 50-pound part loads.
This model is commonly used to remove heat-treated scale, prepare and clean parts for centerless grinding application or surface finish parts in batch loads before assembly. It is available with two dust collector sizes depending on the basket size. Two TB-3 machines with a total of 880 sq.ft. of filter area will produce more volume than the TB-4 model. Because the part load protects the barrel during operation, the TB-4 unit will be able to extend barrel screen life when processing short or small part loads when a smaller barrel is installed.