gearbox acceptance tests and quality certs

[Tmoose]

We are going to buy some expensive gearboxes.

We want to include requirements for things like material certs, manufacturing certifications, and acceptance tests to get good quality assemblies.

I'm familiar with GM's vibration specifications for new equipment.

My internet searches for examples of the right documents have not come up with much. Can someone point me toward something I could use as starting references?

Thanks,

Dan T

 

[MikeHalloran]

The document you need is a list of contact information for happy customers.




Mike Halloran
Pembroke Pines, FL, USA

 

[Tmoose]

Hi Mike,

Thanks for the suggestion. We have received lists of "references" with dates and power ratings of installations comparable.

Thanks,

Dan T

 

[tbuelna]

Tmoose,

Your ATP (Acceptance Test Procedure) should include any performance parameters that you require each piece of delivered hardware to meet: vibration, operating temps, friction losses, workmanship, weights, lube system flows, etc. I would also recommend an FAI (First Article Inspection, per AS9102 maybe) of each part and a QTP (Qualification Test Procedure) for the assembly. The ATP validates the manufacturing of each delivered unit and the FAI/QTP validates the design, analysis and production process.

Your ATP should also specify a "green run" prior to any testing, since even a very high quality gearbox, assembled under lab conditions, will generate some debris when new. And that should not be cause for rejection.

Most competent gear houses or build-to-print shops are used to maintaining material and heat treat certs, dimensional inspection records, and build sheets. Keeping these detailed records may seem like a hassle, but if you ever have a problem they will be invaluable in helping to troubleshoot it.

Good Luck.