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Trunnion - Wikipedia
Sometimes trunnions are also equipped with casters to allow the striplight to be moved easily. In woodworking, they are the assembly that holds a saw's arbor to the underside of the saw table. In waste collection, the trunnion is the bar on the front of a Dumpster that connects to the back of a garbage truck. On the Space Shuttle, trunnion pins are affixed to the sides of payload items ...