What are the differences between the two terms
for covering industrial machinery

OK, I'll give it a shot. I'm used to warranties relating to mechanical operability, as in after a pump rebuild the vendor gives a one year warranty against workmanship defects (he'll fix it for free if it breaks). Guarantees (like 30-day money back guarantees) imply a level of satisfaction or meeting some performance criteria--like I guarantee this pump will move so much product at such a cost or I'll give you a dozen donuts.

Thomas,

My ten cents...

For all intents and purposes, the industry where used doesn't matter. Those two words are two different aspects of someone or some organization offering some sort of protection and assurance usually relative to a purchase.

From Mr. Webster... the closest meaning for our use:

Guar·an·tee - an assurance of the quality of or of the length of use to be expected from a product offered for sale often with a promise of reimbursement.

War·ran·ty - a usually written guarantee of the integrity of a product and of the maker's responsibility for the repair or replacement of defective parts

Effectively a Warranty is the authority and/or document used to Guarantee a product or service.

Hope this doesn't confuse excessively.
Dana