Here you have the information of the Fans in Snapmaker 2 and its enclosure plus some direct replacement alternatives I’ve found that have similar specs but less noise ( according to specs given, still have not had time to test them):
NOTE: In general, better order ball bearing ones as they will be quieter and more durable, also the connector should be XH2.54. Some stores require you to buy two, but you can also search a bit and find the same model in other stores.
Actual Enclosure Fan (~45 CFM, 45.6 dBA ): Alternative Enclosure Fan 1 (43 CFM, 31 dBA), Alternative Enclosure Fan 1 ( ~43 CFM, 31 dBA ). REMARK: The alternative fans are 25mm thick in place of 20mm, but that should not affect the assembly, also might be needed to re-use the actual cable as it’s longer than the usual ones ( simple cut & paste will be enough)
Can you PLEASE confirm whether there are 2 fans in the printing toolhead?
I have verified that one fan works but how do I test the other (assuming there is another one)?
I have long suspected that my printing issues may be related to fans and cooling in general.
Thank you.
Hi @JohnFiott, YES there are two fans - confirmed by disassembly - : The blower one is for hotend cooling and the 2510 is inside the head and set to cool the part, splitting the air in two parts for each side of the nozzle.
Thanks for the tip @hoaschter !. I did not do a full disassembly of the PSU. I’ll take a look and see if I can identify the fan and find alternatives for it
So is the hotend cooling fan on all the time by default? I have turned the parts cooling fan on and off using Gcode (M106, M107) but is there anything similar for the hotend cooling one? Maybe I need to specify the index in the Gcode command?
@Franky:
You might want to add the original fans’ dimensions, voltage, and amperage into your original post for people looking up alternatives. If they just go by the links you provided they may not know the voltage for instance (like with your “Actual Enclosure Fan” link, since it does not list the model # like the Actual PSU Fan link does).
For example, I posted this information over in the SnapMaker 2.0 Enclosure thread for the A350 (but may apply to all) enclosure fan:
Manufacturer: Shenzen Xinyujie Technology Co. Ltd.
Model: XYJ24B8020H
Width/Height: 80mm
Thickness: 20mm
Voltage: 24vdc
Amps: 0.25A
REPOST (After the maintenance of the site I cannot edit the original post)
Here you have the information of the Fans in Snapmaker 2 and its enclosure plus some direct replacement alternatives I’ve found that have similar specs but less noise ( according to specs given, still have not had time to test them):
NOTE: In general, better order ball bearing ones as they will be quieter and more durable, also the connector should be XH2.54. Some stores require you to buy two, but you can also search a bit and find the same model in other stores.
Actual PSU Case Fan ( ~7 CFM, ~36 dBA )
Manufacturer: Shenzen Xinyujie Technology Co. Ltd.
Model: XYJ24B3510H
Width/Height: 25mm
Thickness: 10mm
Voltage: 24vdc
Current: 0.08A
Alternative PSU Fan 1 (~17 CFM, ~28 dBA) REMARK: The actual PSU cooling fan is quite good and not noisy, the alternatives are similar or slightly worse in CFM besides that to change it you have to dismantle the whole PSU. I would not recommend to change it. If anyone finds any other alternative, let me know
Alternative Enclosure Fan 1 (43 CFM, 31 dBA) Alternative Enclosure Fan 1 ( ~43 CFM, 31 dBA ). REMARK: The alternative fans are 25mm thick in place of 20mm, but that should not affect the assembly, also might be needed to re-use the actual cable as it’s longer than the usual ones ( simple cut & paste will be enough)
Alternative Part Cooling fan 1 (2.7 CFM, 22dBA) Alternative Part Cooling Fan 2 ( ~2.5 CFM, ~27 dBA) REMARK: The original part cooling fan is not so noisy and furthermore powerful than the alternative found.I would not recommend to change it. If anyone finds any other alternative, let me know
EDIT1: New part cooling fan, more CFM/less noise
EDIT2: As suggested by @fillibar, add the description of original fans and some reformatting to make it more clear Also found the real PSU Fan and added it
I hope it’s helpful
I’ll do some testing in the future when I have them here. If anyone has some direct alternative, please feel free to propose.
Awesome! Very useful because I thought the hotend used 12v fans not 24v like the others except the PSU Fan… Great information overall because I was just thinking about how the fans seemed oddly loud. The enclosure helps cut down on the fan noise except the PSU but your alternative is a dramatic dBA difference so that will likely solve that.
Alternative PSU Fan 1 (~17 CFM, ~28 dBA) Alternative PSU Fan 2 (~11-21 CFM, ~15-32 dBA, temperature controlled - thanks to @gpt1plon ) REMARK: The actual PSU cooling fan is quite good and not noisy, the alternatives are similar or slightly worse in CFM besides that to change it you have to dismantle the whole PSU. I would not recommend changing it. If anyone finds any other alternative, let me know
@gpt1plon, not sure what you mean … all the fans have the same dimensions as the originals so should be directly swappable without needing anything else. The only one that is a bit different is the enclosure one as itś a bot thicker but fits nicely.
@Franky:
Wanted to thank you again for this information. I upgraded my A350 (which has been sitting idle for a bit until I am confident in the calibration routine again) and was surprised by the noise after so long. So I went ahead and replaced the PSU fan finally with the one I had ordered. Such a huge difference! It makes me almost disappointed that Snapmaker did not go with a quieter one to begin with.
Now if only they used a larger power supply so that a larger and nearly quiet fan could be used rather than these tiny ones that have to work harder. When you are dealing with such a larger area as it is in the first place, keeping this PSU so small may be nicer looking but I would trade quiet for the look of it.
That third one is the sensing part. You have to locate it in a representative spot to control it. From what I see, probably the place where the fan is connected is a good one as is close to transformers and power transistors.
one in the outer casing. and one directliy in the PSU.
Also found the real PSU Fan and added it 
… all the fans have the same dimensions as the originals so should be directly swappable without needing anything else. The only one that is a bit different is the enclosure one as itś a bot thicker but fits nicely.