Pump Station
Industrial MechanicalRun the numbers that keep a transfer pump healthy and efficient.
CalculationInteractive UI10 min
Shaft Alignment Challenge
Precision measurement decides whether a pump runs for years or weeks.
Difficulty: IntermediatePlay time: about 10 minutes
Play Shaft Alignment Challenge nowOpens the full-screen game - or play in place below.
Workplace narrative
A rebuilt pump is back from the shop and the coupling must be aligned before startup. Misalignment - even a few hundredths of a millimetre - will punish the bearings and seals until they fail early. You have your dial indicators, the base is leveled, and the readings are in. Decide what the measurements mean and what to do about them before the plant signs off on the job.
Why this skill matters
Shaft alignment is a signature millwright skill. Strong performance maps to Industrial Mechanical and Marine Engineering pathways and to reliability roles.
Learning objectives
- Distinguish angular from parallel (offset) misalignment
- Interpret alignment readings against tolerances
- Order the alignment procedure correctly
- Recognize the role of soft foot and base preparation
Equipment and components
Pump and motor shafts with flexible couplingDial indicators and magnetic basesLaser alignment system (reference)Shims and feeler gaugesPrecision levelTorque wrench
Technical principles
- Angular misalignment changes gap across the coupling face
- Parallel offset keeps faces parallel but shifts shaft centres
- Tolerance is set by coupling type and machine speed
- Soft foot (uneven base contact) distorts readings and housings
How to play
- Interpret each reading before choosing an action
- For numeric questions, subtract and compare against the stated tolerance
- Build the procedure step by step - alignment is a sequence, not a single move
- Read the explanations to learn how tolerances scale with speed
Rules
- 10 points per question plus streak bonuses
- Hints cost 3 points
- Pass each level with 70% or more
Formula and calculation section
Tolerance Check
Deviation = |measured - target|
Compare the deviation against the coupling manufacturer's tolerance for the machine speed.
Shim Calculation
Shim = front-foot lift required
Shims correct vertical offset and angularity at the motor feet.
Need help with the mathematics?
Open the relevant mathematics module, practice the calculation, then return to the scenario.
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Play right here
The full game runs on this page - no account, no install. Or open the full-screen play mode with the button above.
Level 1/2Score 0Streak 0Hints 0
Your shift briefing
A rebuilt pump is back from the shop and the coupling must be aligned before startup. Misalignment - even a few hundredths of a millimetre - will punish the bearings and seals until they fail early. You have your dial indicators, the base is leveled, and the readings are in. Decide what the measurements mean and what to do about them before the plant signs off on the job.
Feedback approach
Each explanation shows how the reading maps to a physical shaft condition - the mental model a millwright builds with experience.
Common mistakes
- Tightening coupling bolts before checking alignment
- Chasing readings on a machine with soft foot
- Ignoring thermal growth of hot machines
- Treating the tolerance as a suggestion (it is set by the coupling maker)
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Keep learning
Return to the Industrial Mechanical hub to see the full skill path.