This number, is manufacturer specific, but the following guidelines will be accurate enough to determine what is needed for layouts and quotes:
Highest Product to be run + 3.75" = tier pitch
3.75" allows for air movement above the product plus belt support structure and belt thickness. For critical sizing and space considerations, contact us for specific manufacturers support design dimensions.
Taking our 12" pizza crust example, use 1" thickness for the product
Based on this, we have a tier pitch requirement of at least 4.75". From a practical side of design, a more typical tier pitch would be 5.5" or 6", especially if you are using wider belts, which require a person ?s arm to extend into the spiral for maintenance or clearing out products.