Engineering Tools

Labeling Machine Capacity Calculator

From your line speed — or from stations × rpm — to practical bottles per hour with real-world efficiency, then matched against U-Packer rotary models. Formulas and constants are published below.

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Your line

All inputs stay in your browser; the URL updates so you can share the calculation.

Line requirement
bottles per hour (BPH) of the filling/packing line the labeler must keep up with
Production pattern
η = (shift time − roll changes − changeovers − maintenance − stops) ÷ shift time. Typical 0.85–0.95.
Bottle & label sanity check
mm, body OD
mm, on the bottle
Schedule (for annual output)

Required labeler capacity

—BPH

Matching U-Packer models

ModelTypeNameplatePractical ×ηMarginVerdict

Practical = nameplate × your η. “Marginal” fits on paper but depends on hitting η — confirm with factory test data.

Output over time

—
bottles / shift
—
bottles / day
—
bottles / year

Size guard (wrap-around)

    Assumptions in this calculation

      Indicative engineering estimate, not a quotation. Final machine sizing is confirmed on your physical bottle and label samples — .

      Worked examples

      Sizing a rotary labeler for a 12,000 BPH water line

      A still-water line runs 12,000 BPH with one main SKU. With the recommended 12% headroom the required labeler capacity is 12,000 × 1.12 = 13,440 BPH. Matching U-Packer rotary models at η = 0.90 (the “2–3 SKUs” preset): the UHL-1212Y (12 plates, 12,000 BPH nameplate) reaches only 10,800 BPH practical and is undersized; the UHL-1516Y (15,000 BPH nameplate) delivers 13,500 BPH practical — a +0.4% margin that fits on paper but leaves nothing in reserve; the UHL-1820Y (18,000 BPH) delivers 16,200 BPH practical, +20.5%. Most plants choose the 18,000-class machine: filler efficiency tends to improve over time, and swapping a labeler later costs far more than a few idle stations now.

      Annual output at 12,000 BPH, 8 h × 2 shifts × 300 days: 96,000 bottles per shift, 192,000 per day, 57.6 million per year.

      Checking a 16-plate × 15 rpm configuration

      A second-hand labeler is quoted as 16 bottle plates at 15 rpm turret speed. Theoretical output = 16 × 15 × 60 = 14,400 BPH — but theory assumes zero stops. The practical band at η 0.85–0.95 is 12,240–13,680 BPH, and at the typical 0.90 the machine makes 12,960 BPH. That does not cover a 12,000 BPH line with 12% headroom (13,440 BPH): the verdict is “marginal”, meaning the machine fits only if you actually sustain η above 0.93. Ask for factory test data on a comparable bottle before committing, or size up one class.

      Frequently asked questions

      What does BPH mean, and how do I convert bottles per minute?

      BPH is bottles per hour — the standard capacity unit for labeling and filling lines. Multiply bottles per minute (BPM) by 60 to get BPH: a 200 BPM line runs 12,000 BPH. This calculator accepts either unit and always shows both.

      Why does my line never reach the machine’s nameplate speed?

      Nameplate BPH is theoretical: stations × rpm × 60 with zero stops. Real production loses time to label-roll changes, SKU changeovers, glue-system care and unplanned stops. The overall efficiency η = (shift time − lost time) ÷ shift time typically lands between 0.85 and 0.95 for a single-SKU long run, and nearer 0.80–0.88 for multi-SKU short batches. That is why this tool applies η before matching a model.

      How much headroom should I plan above my line speed?

      Size the labeler for your upstream/downstream line speed plus 10–15%. The labeler should never be the bottleneck: filler and packer efficiencies differ, and a labeler running permanently at 100% of its nameplate has no reserve for catch-up after a micro-stop.

      Does the rotary formula (stations × rpm) apply to linear machines?

      No. A linear (in-line) labeler’s theoretical output is Q = conveyor speed v (m/min) × 60 ÷ bottle pitch p (m), where pitch = bottle diameter + minimum gap set by the feed screw or star wheel. Rotary machines dominate above roughly 6,000 BPH; below that, linear and single-station machines are often the economical answer.

      How accurate is this calculator?

      Indicative, by design. The formulas are exact; the inputs that vary by factory (efficiency η, changeover times) are stated openly and can be adjusted. Final machine sizing is confirmed against your physical bottle and label samples — send us samples and we validate the calculation on the actual machine.

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