I would like to maintain my A1 well but I don’t understand why the assistant periodically warns me to lubricate the Y axis but I have never had messages for the x and z axes. Even in the assembly instructions it was referred to lubricating the Y axis but it was specified not to lubricate the X axis. I’m a bit confused. The guidelines from Wiki say to lubricate it but why doesn’t the assistant give me warnings and the assembly instructions said not to do it? Does anyone know the answer
No, I personally ignore the assistant messages when it comes to lubricating and I stick to my own schedule. I was told that the assistant only triggers a notification to oil when it senses resistance in the rails but I don’t believe this to be true since II have had it tell me to lubricate rails right after doing it.
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I’ve had both Y and X axis maintenance prompts in the first 250 hours of printing. As far as the “do not lubricate” Y axis warning, maybe you are thinking of the grease vs oil warning, as they warned to not mix them, and that they use oil only on more recent machines? Thus it is probably only the Z axis that gets greased now.
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Captain here:
The Y rail is composed of 4 V shaped ball bearings sliding on two rails. The later need to be lubricated for the bed to ensure a smooth gliding motion.
The X rail has two rectangular ball bearing ( basically two struts of 0.5mm wire holding 2mm steel balls - think about 2 tank tracks pressing on each other but with steel balls.) that glide on the horizontal rail.
While on the Y rails you need oil to ensure movement, the X mechanism needs grease to ensure the balls are kept in place, as they’re prone to slip out if the mechanism is not assembled.
This is not an official Bambu Lab procedure, its just what i have discovered on my own maintenance ventures (yeah, i took the tool head off the rail)
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Bambu Lab Wiki says:
Please note that it is strictly prohibited to use lubricating grease on the X-axis linear rail.
Seems that this in contradiction to your suggestion?
best,
Greg
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Haven’t read that one before so i guess the joke’s on me 
In my defence, when i took the tool head off the rail, the ball bearings had a really hard time staying in their place, so grease was the logical way to put it back together…
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That’s ok but I think it’s better to clarify it here to prevent wrong maintenance 
Oh but I did, i did clarify
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