channels (bearing channel)

English to Spanish Tech/Engineering Furniture / Household Appliances saw table / workcentre

Instructions for a saw workcentre. Talking about channels or bearing channels as I see below.

My doubt here is that I don´t think the channels are really "canales" or "guías" as I have thought of translating as besides that, I have the obvious confusing problem that I have already used the word "guía" for term "fence" as instructed by the client so we cannot have two "guías"!!! Help See below in the Channels section for this... (In inclined to algo go for vías but again im not sure), pls provide references, for spain pls!


Legs
Place the end panel on the edge of the work bench and fit the leg
Holding in the spring pin, you can now fit the leg to the leg bracket
Now take the longer M8 bolt with a washer under the head.
Push the bolt through the hole and attach a washer and nyloc nut on the other side and tighten.
Make sure each leg splays outwards.
Check that you can put the leg into the park position by pushing in the lock pin.

Channels
Once you have fitted the four legs, you can now fit the base channels.
Fit each base channel with the open side facing in.
Place the bolt into the hole and tighten.
Repeat this at the other three corners
Now turn your table the right way up
Bearing
Take a bearing channel and fit a flange nut at each end.

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And this is the bit about the fence (which I have translated as a guia following client's inctructions)

Now turn the saw over, leaving the chassis positioned in the centre
You can now fit the fence, which goes on from the left-hand side
Slide the side fence in up to the blade.
Use any of the two arms to lock the side fence in position