How do you calculate net good parts per hour on a batch UV cure cell?

Multiply parts per fixture by cycles per hour for gross capacity, then multiply by uptime and cure yield. With 8 parts/fixture, 20 cycles/hr, 80% uptime, and 97% yield, gross is 160/hr and net is about 124 good parts/hr.

What is the difference between gross capacity and net good parts?

Gross capacity (160/hr in the default) is the ideal if the cell never stops and never scraps. Net good parts (124/hr) subtracts the 32/hr lost to downtime and the 3.8/hr lost to cure rejects — it's what you can actually promise.

What is a good cell uptime for a UV batch cure station?

Well-run manual load/unload batch cells run 75-85% uptime; automated fixturing can reach 90%+. The 80% default reflects a realistic manually loaded cell with reload and lamp-cycle gaps.

Why does cure yield matter so much less than uptime here?

At 97% yield you only lose 3.8 parts/hr to rejects, while 80% uptime costs 32 parts/hr. Uptime is the bigger lever — chase reload time and lamp scheduling before you chase the last point of cure yield.

How do I raise net good parts per hour?

Add parts per fixture (denser nesting), shorten cure cycle time to raise cycles per hour, or close downtime gaps. Each is multiplicative, so a 10% uptime gain and denser fixtures compound.

Does this account for lamp warm-up at shift start?

Only if you fold warm-up into the uptime figure. The model uses steady averages, so for a cell that idles cold each morning, lower your uptime input to reflect the lost first cycles.

UV Curing calculator

UV Batch Cure Capacity Calculator

UV batch cure fixture capacity converts a batch curing station's raw geometry — parts per fixture and cycles per hour — into realistic net good parts per hour after uptime and cure-quality losses. Manufacturing engineers and cell owners use it to plan takt, staff loading stations, and quote realistic throughput for UV-cured coatings, adhesives, and potting. It matters because the nameplate 'parts times cycles' number is a fantasy on the shop floor: lamps warm up, fixtures get reloaded, and undercured or overcured parts get scrapped. This tool bakes those losses in so you commit to numbers you can actually hit.

What this calculator does

Project parts per hour from a batch UV cure fixture (jig + lamp + cycle) given parts per fixture, cycles per hour, uptime, and yield.
Use it when sizing a new UV batch fixture (lab bench cure, spot-cure carousel, manual fixture) instead of a continuous belt - the math is different.
It computes net good parts per hour by multiplying parts per fixture by cycles per hour for gross capacity, then derating for cell uptime and first-pass cure yield.

Formula used

Gross capacity = parts per fixture × cycles per hour
Net good parts / hr = gross × uptime × cure yield

Inputs explained

Parts loaded per cure fixture:
Completed cure cycles per hour:
UV cell uptime:
First-pass cure yield:

How to use the result

Use it when planning batch UV cure throughput, sizing how many fixtures or cells a job needs, or reconciling a quoted rate against measured output.
It treats uptime and yield as steady averages; it does not model warm-up transients, lamp-aging drift, or a specific bad fixture that skews yield on one shift.

Common questions

How do you calculate net good parts per hour on a batch UV cure cell? Multiply parts per fixture by cycles per hour for gross capacity, then multiply by uptime and cure yield. With 8 parts/fixture, 20 cycles/hr, 80% uptime, and 97% yield, gross is 160/hr and net is about 124 good parts/hr.
What is the difference between gross capacity and net good parts? Gross capacity (160/hr in the default) is the ideal if the cell never stops and never scraps. Net good parts (124/hr) subtracts the 32/hr lost to downtime and the 3.8/hr lost to cure rejects — it's what you can actually promise.
What is a good cell uptime for a UV batch cure station? Well-run manual load/unload batch cells run 75-85% uptime; automated fixturing can reach 90%+. The 80% default reflects a realistic manually loaded cell with reload and lamp-cycle gaps.
Why does cure yield matter so much less than uptime here? At 97% yield you only lose 3.8 parts/hr to rejects, while 80% uptime costs 32 parts/hr. Uptime is the bigger lever — chase reload time and lamp scheduling before you chase the last point of cure yield.
How do I raise net good parts per hour? Add parts per fixture (denser nesting), shorten cure cycle time to raise cycles per hour, or close downtime gaps. Each is multiplicative, so a 10% uptime gain and denser fixtures compound.

Last reviewed 2026-05-12.