Testing a Tumble-Belt Shot Blaster With Your Own Parts
A buyer's guide to planning a tumble-belt shot blasting demonstration using the buyer's actual metal workpieces, with practical checks for batch load, part weight, and acceptance criteria.
Before signing off on a tumble-belt shot blasting machine, insist that the demonstration use your own production parts, not supplier samples. A machine rated for a 200 kg batch load and parts up to 10 kg each may behave very differently once your mix of shapes, sizes, and surface condition is tumbling inside the 0.15 m³ effective volume.
Ask the supplier to run a representative batch at your intended fill level and record how the parts move, whether they nest or trap shot, and how evenly edges and recesses are cleaned. Compare results at the low and high ends of the stated 0.6–1.2 t/h rated productivity, and agree in advance on acceptance criteria such as visual cleanliness, surface roughness, and cycle time. Clarify whether the demonstration uses your preferred shot size and whether parts are fixtured or free-tumbling.
Before requesting a quote, confirm with the supplier which parameters the demonstration will fix, how results will be measured, and whether the tested batch configuration will be written into the acceptance test.