Abrasive Blasting, Shot Peening & Surface Prep calculator
Blast Cabinet Load and Shift Capacity Calculator
Find the binding cabinet load limit from usable volume and safe loaded weight, then turn observed complete loads into accepted shift output. Enter volume, part envelope, weight limit, part weight, loads per shift and acceptance.
What this calculator does
- Binding cabinet load limit from usable volume and safe weight, converted into accepted shift output.
Formula used
- Volume-limited parts = floor(usable volume ÷ part envelope)
- Weight-limited parts = floor(maximum loaded weight ÷ part weight)
- Parts per load = min(volume-limited parts, weight-limited parts)
- Accepted parts = parts per load × complete loads × first-pass yield % ÷ 100
Inputs explained
- Usable Cabinet Loading Volume: Volume loadable without obstructing guns, motion or clearance.
- Part Loading Envelope: Effective occupied volume per part including spacing.
- Maximum Safe Loaded Weight: Approved total part-and-fixture load limit.
- Part Weight: Representative individual part weight.
- Complete Loads per Shift: Full cabinet cycles completed in a representative shift.
- First-Pass Acceptance: Share of blasted parts accepted without rework.
How to use the result
- Best suited to shift capacity, fixture redesign, batch-size standard work.
- Does not validate ergonomics, fixture stability or gun coverage. Does not optimize mixed-part nesting. Equipment manufacturer limits control the safe load.
Common questions
- Why use part envelope? Parts need spacing, orientation, gun access and media drainage. Solid material volume overstates the usable loading density, so the envelope includes the practical clearance.
- What if weight is the constraint? The weight-limited whole-part count controls even when more parts fit geometrically. Improve the fixture or reduce part weight before changing the nesting plan.
- Should I count partial cycles? No. Count only complete cabinet loads observed in a representative shift; a partial cycle at the end is not dependable accepted output.
- Does capacity prove process uniformity? No. Validate coverage, profile, cleaning and part interaction at the selected load pattern before committing the capacity.
Last reviewed 2026-10-01.