This context comes from a video game "Metal Gear Solid The Phantom Pain"
And Boss, with no borders left, what difference can we make? War will have lost any true meaning to the world. Just one more gear keeping the wheels of economy turning. Another product bearing down the capitalist conveyor belt.
Here is one definition of this phrase:
To carry or transport someone or something down along something. In this usage, a noun or pronoun is used between "bear" and "down." The current bore us down the river toward the ocean. The courier bore the parcel down the road as quickly as he could. (source: Farlex Dictionary of Idioms.)
This definition would apply here if the sentence was reversed (conveyer belt bearing down another product). Is there an intransitive version of this phrasal verb? I wasn't able to find it.
bear down (on someone or something)
to press down on someone or something. Bear down on the pen. You have to make a lot of copies. Don't bear down too hard or you'll break it. (source: McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.)
Does the sentence in question mean "Another product pressing down on the capitalist conveyor belt."?