If wooden parts are binding, will silicone spray lubricant cause bare dry wood to swell? The wood is not maple or oak or birch. It is some type of softwood, maybe fir or pine. The bearing surfaces are not painted or varnished, just bare wood.
I have never used silicon spray lube. But it should say on the back of it what it's used for.
You didn't really say what the object is that's binding. More then likely it's a draw? Wax would be a very good alternative to use for your problem.
Why is it binding in the 1st place? It could be because the timber has moved since moisture in the air. Witch has made it to tight.
More then likely it is pine. Since its used in a lot of furniture.
A dry silicone spray lube is fine for bare wood applications. If you apply the spray to a cloth then wipe it on the binding surfaces, you should not have any problems with swelling. you can also use furniture polish, but in many cases, polish uses a silicone base as well with wax. Wax can build up, so I like pure silicon best.
As with any application to unfinished wood, test a small inconspicuous area to check for possible discoloration if the surface is visible.