Teardown
Borehole pump housing: the four tolerances that matter
Community reverse-engineeredReport an IP concernGrace Wanjiru
@grace-mech
Bought at retail · surveyed Jul 2, 2026
- Independent dimensional survey
- Material spectroscopy & alloy analysis
What can I quote from, and what is still missing?
- Parts cost
- $120 – $155
- Parts
- 24
- Difficulty
- Intermediate
CAD breakdown of a submersible pump housing, with the fits that decide whether it survives a season of silt and the three that do not matter at all.
What you may do with this
No licence and no authorization. The survey is the publisher's own measurement of hardware they bought, and any patent or trade-dress question in your manufacturing jurisdiction is still yours to answer.
What the methods prove
Independent dimensional survey
Dimensions measured off the unit, then redrawn from those measurements.
Material spectroscopy & alloy analysis
Materials identified by compositional analysis of the unit's own parts.
Everything published here is the publisher’s own measurement of a legally acquired, off-the-shelf commercial unit. Qatoto does not host manufacturer-internal documents and makes no clearance assessment of its own.
Report an IP concern about this teardown
Publisher attested on Jul 8, 2026 that the unit was lawfully obtained, that the data was gathered by measurement and standard disassembly, and that no vendor-confidential material was used.
Materials and composition
Every designation below carries how the publisher arrived at it. A material named from a datasheet or a supplier is not the same claim as one measured off this unit.
316 stainless
Housing casting · Metal alloy
Measured by spectroscopy
Cast · As-cast, bore machined
Composition, 3 elements
Element Weight percent Method Instrument Cr 16–18 % Synthetic exampleInvented figure. Not an instrument reading Ni 10–14 % Synthetic example Not an instrument reading Mo 2–3 % Synthetic example Not an instrument reading Some figures in this table are synthetic examples. They were invented to show the shape of a composition record and they are not a measurement of any unit.
Simulation
- Factor of safety
- 1.6 ×
- Peak von Mises
- 118 MPa
- Max displacement
- 42 µm
- Thermal delta
- 6.5 K
- Rated load
- 3,200 N
Author-reported figures from their own analysis or test rig. Nothing on this page computed them.
Documents
Getting it made
Qatoto lists factories by capability and certification and carries an inquiry to them. Nothing here is a quote, and a factory will ask for your own files.
Browse the factory directory- pumps
- tolerances
- cad
- water
Discussion
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