How do you calculate blast cabinet capacity?

Multiply parts per load by loads per shift for gross capacity, then multiply by uptime and first-pass acceptance. With 18 parts × 22 loads × 88% uptime × 96% acceptance, gross is 396 and accepted output is about 335 parts.

Why is accepted output lower than gross capacity?

Because uptime and acceptance both subtract from the ideal. In the example, downtime removes about 48 parts and reblast/rejects remove roughly 14, dropping 396 gross to about 335 accepted.

What is a good first-pass acceptance for blasting?

For dimensionally stable cleaning or peening work, first-pass acceptance in the mid-90s percent is healthy. The 96% here costs only about 14 parts; below 90% the reblast burden grows quickly.

How does cabinet uptime affect output?

Uptime scales the whole shift. At 88% you lose roughly 48 parts off a 396-part gross; common causes are media reloads, nozzle changes, dust collector cleaning, and part loading time.

Should I plan production from gross or accepted capacity?

Always plan from accepted capacity. Committing to 396 when the cabinet realistically yields about 335 good parts builds a shortfall into every shift.

How can I raise accepted cabinet output?

Attack the largest loss first — improve uptime with faster reloads and better dust collector maintenance, or lift first-pass acceptance by stabilizing media size and nozzle distance to cut reblast.

Abrasive Blasting, Shot Peening & Surface Prep calculator

Blast Cabinet Load Capacity Calculator

Blast cabinet load capacity estimates how many good parts a manual or automated blast cabinet actually delivers in a shift, after losses from downtime and reblast. It starts from theoretical capacity — parts per load times loads per shift — then derates it for the realities of cabinet uptime and first-pass acceptance. Production planners and cell supervisors use it to set realistic commitments and to see whether a reblast problem or a flaky dust collector is the true throughput limiter. It matters because quoting from gross capacity overpromises, while this accepted figure is the number you can actually ship.

What this calculator does

Estimate accepted parts per shift from cabinet load size, cycle count, uptime, and first-pass acceptance.
a production lead needs to know how many parts a blast cabinet can finish in a shift
It multiplies parts per load by loads per shift for gross capacity, then derates by cabinet uptime and first-pass acceptance to give accepted output.

Formula used

Gross cabinet capacity = parts per load × cabinet loads per shift
Accepted capacity = gross capacity × cabinet uptime × first-pass acceptance

Inputs explained

Parts per cabinet load:
Cabinet loads per shift:
Cabinet uptime:
First-pass acceptance:

How to use the result

Use it for shift-level capacity planning or to quantify how much downtime and reblast are eroding a cabinet's real output.
It assumes loads, uptime, and acceptance hold steady across the shift; a single jam or media change can skew the actual count below the estimate.

Common questions

How do you calculate blast cabinet capacity? Multiply parts per load by loads per shift for gross capacity, then multiply by uptime and first-pass acceptance. With 18 parts × 22 loads × 88% uptime × 96% acceptance, gross is 396 and accepted output is about 335 parts.
Why is accepted output lower than gross capacity? Because uptime and acceptance both subtract from the ideal. In the example, downtime removes about 48 parts and reblast/rejects remove roughly 14, dropping 396 gross to about 335 accepted.
What is a good first-pass acceptance for blasting? For dimensionally stable cleaning or peening work, first-pass acceptance in the mid-90s percent is healthy. The 96% here costs only about 14 parts; below 90% the reblast burden grows quickly.
How does cabinet uptime affect output? Uptime scales the whole shift. At 88% you lose roughly 48 parts off a 396-part gross; common causes are media reloads, nozzle changes, dust collector cleaning, and part loading time.
Should I plan production from gross or accepted capacity? Always plan from accepted capacity. Committing to 396 when the cabinet realistically yields about 335 good parts builds a shortfall into every shift.

Last reviewed 2026-05-12.