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Work · Guided lesson

Measure bottleneck pace and balance efficiency

About 13 minutes · 3 reading + 10 practice and checks
Time includes reading, practice, and questions. Extra videos or further study are optional.
See this course’s project requirements

A paper assembly-station plan with precedence constraints, target cycle time, station assignments, calculated balance losses and a tested demand-change response.

Keep your working files in your own notebook or software. Save a private description, checklist, and work link in My Proof.

What to include

  • Save a precedence map with five measured task durations; include the original-case decision evidence and a separate changed-case result.
  • Save the takt calculation with period and exclusions; include the original-case decision evidence and a separate changed-case result.
  • Save the three-station feasibility check against 90 sec; include the original-case decision evidence and a separate changed-case result.
  • Save capacity estimate separately from guaranteed delivery; include the original-case decision evidence and a separate changed-case result.
  • Record the rejected candidates and exact capacity reasons; include the original-case decision evidence and a separate changed-case result.
  • Assemble the precedence/takt/balance/sensitivity/trial packet; include the original-case decision evidence and a separate changed-case result.

Review and revise

Use these criteria to check your work and choose what to improve.

  • The final packet uses the supplied task-specific constraints and all six records agree.
  • Every result can be traced to an identifier, input, calculation or stated decision rule.
  • Changed-case practice updates dependent records and keeps holds or uncertainty visible.
  • The packet states the learner role, authority boundary and specific next verification needed before real work.
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Before you begin

The idea in everyday life

Original fictional workplace practice; paper or a local document is sufficient. The rules and records below are supplied for this exercise, not asserted universal workplace policy. Willow proposed loads 75,75,25 sec; work content 175 sec; three stations. Modeled cycle 75 sec. Efficiency=content÷(stations×modeled cycle). Ideal paper output in12,600 sec is floor(time/cycle), ignoring startup/losses.

The idea

The busiest station sets the modeled cycle; balance efficiency compares productive task time with total station-cycle time and does not represent product quality.

Follow along

Measure bottleneck pace and balance efficiency — worked practice

The busiest station sets the modeled cycle; balance efficiency compares productive task time with total station-cycle time and does not represent product quality.

Willow proposed loads 75,75,25 sec; work content 175 sec; three stations. Modeled cycle 75 sec. Efficiency=content÷(stations×modeled cycle). Ideal paper output in12,600 sec is floor(time/cycle), ignoring startup/losses. Use paper or a local document. Preserve the original case and make a separate changed-case record.

  1. 1. Step 1

    Identify maximum station load.

    You should see: Modeled cycle 75 sec; S1/S2 are tied bottlenecks.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

  2. 2. Step 2

    Calculate total station-cycle availability.

    You should see: 3×75=225 station-seconds per cycle.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

  3. 3. Step 3

    Calculate balance efficiency and idle content.

    You should see: 175/225≈77.78%; idle 225−175=50 station-seconds.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

  4. 4. Step 4

    Save capacity estimate separately from guaranteed delivery.

    You should see: Ideal 168 units=floor 12,600/75; no startup/variation allowance, so not a promise.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

Now change one thing

A separate hypothetical redesign has station loads 90/85 sec, a modeled 90 sec cycle and total content 175; it is not an assignment of the original five indivisible tasks. What is idle content per cycle in station-seconds?

Your work

What to finish

Save capacity estimate separately from guaranteed delivery; include the original-case decision evidence and a separate changed-case result.

Common mistake

Watch for this

Calling high balance efficiency proof of safe sustained production or defect-free output.

How can I tell I understand it?

Using the supplied identifiers, I can save capacity estimate separately from guaranteed delivery. My changed-case record names the revised condition and explains which dependent decision it changes.

Try 3 questions

Quick knowledge check

Answer all 3 questions. Get at least 2 right and the lesson completes automatically.

Not yet passed

You’ll get an explanation for each answer. Signed in? Your results save to your account.

1Which Willow station load determines its modeled cycle 75?
2Willow efficiency uses which denominator?
3What does the Willow 168-unit estimate omit?
0 of 3 answeredApply the lesson to a short question, then review the explanation.
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Finish this lesson

Pass the check. We’ll save the progress.

Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.

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Sources and further reading

Explore the references behind this lesson.

43-5061.00 - Production, Planning, and Expediting Clerks
Source & access notes · checked 2026-10-01

Occupational task and responsibility context; the exercise policies and quantities are original fictional inputs. Page title and relevant content inspected; no interactive controls or credential process tested.

Access: Readable official page retrieved with the web reader on 2026-10-01.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

51-2092.00 - Team Assemblers
Source & access notes · checked 2026-10-01

Occupational task and responsibility context; the exercise policies and quantities are original fictional inputs. Page title and relevant content inspected; no interactive controls or credential process tested.

Access: Readable official page retrieved with the web reader on 2026-10-01.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

moodle.skills commons.org — view.php?id=30
Source & access notes · checked 2026-10-01

Public agency or educational context; no source exercises are copied and no simulated threshold is presented as an official rule. The direct-access limitation is preserved; official search-retrieved context supports the stated scope only.

Access: Official primary-page summary was available in web search; direct page retrieval was blocked in this environment. Full page and interactive operation are not claimed.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

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