Quieter cooling fan

[discomikey]

Hi all, I have a 2015 Oxford migmaker 330-1

It's a cracking machine, the only downside is the cooling fans are much noisier than most other machines I use. They've been like that from new and I don't think they are faulty.

Does anyone have any experience with swapping them out for a quieter brand of fans? Ideally same mounting hole centres etc. The current fans are in the photo attached.

 

[gaz1]

cheapest alternative computer fans then some have 3 speeds on them really shift air through a pc system

 

[bletchmonster]

I have the same issue with my oxford I mig.
It's like an air raid siren firing up when you switch it on. Certainly no leaving it on all day doing bits and pieces. Drives me mad.
A little cheap PWM speed controller off ebay could be the answer (nudge, wink) . Turn the fans down when doing low duty welding. Running at. Low output, especially in a cold workshop doesn't require full fan speed. Just got to remember to up speed when giving it some beans. Obviously warranty issues apply.

 

[gaz1]

i will get a video of my fans for you to show its noise levels

 

[colnerov]

Hi, It's down the the fan blades. Straight blades shift more air but are noisier, curved blades are quieter but less efficient.

Colin

 

[Shedendman]

Or you could just turn it off when not in use
If i'm not welding i'm cutting grinding,if i'm not doing that i'm hammering,with the radio on in the background or i'm chatting a load of codswallop with someone,what fan noise?

 

[gaz1]

now i know its cfm ratio heres what i know

https://uk.rs-online.com/web/p/products/5440706/?grossPrice=Y&cm_mmc=UK-PLA-DS3A-_-google-_-PLA_UK_EN_HVAC_And_Fans_And_Thermal_Management-_-Fans|Axial_Fans-_-PRODUCT+GROUP&matchtype=&gclid=EAIaIQobChMIn_e-3LK63AIV7bXtCh1wLghlEAQYASABEgIRUvD_BwE&gclsrc=aw.ds

Height and width 120mm
Air Flow 95cfm unsure if it means through the fan
Noise Level 49dB
Fan Speed 3100rpm

computer fan

https://www.ebay.co.uk/itm/GameMax-Ring-LED-Blue-12CM-120mm-Fan-Cooler-Case-PC-Computer-Cooling-3-4-Pin/272732201553?_trkparms=aid=555017&algo=PL.CASSINI&ao=1&asc=20151005190540&meid=c8d54d5a7af7403e842b03ddac4e0abd&pid=100505&rk=1&rkt=1&&itm=272732201553&_trksid=p2045573.c100505.m3226

Airflow: 43.2 CFM

Speed: 1300RPM ± 10%

Noise:: 25.88 db

maplins fan

https://www.ebay.co.uk/itm/Maplin-1...268407?hash=item41d6d6b0b7:g:ppgAAOSw2k5bKMYi

It spins at 1200RPM,
which equates to 51.73 cubic feet per minute (CFM) of air being moved around your case,
with only 23.7dBA

 

[gaz1]

the new model is this

https://www.ebay.co.uk/itm/Sunon-Fa...587400?hash=item5af459e008:g:PkgAAOxyXHpSRA5P

Air Flow 105.0 CFM (2.97m³/min)
Noise 48 dB(A)
Power (Watts) 19.0W
RPM 2900 RPM

id dare go down another route

https://www.psp.uk.com/shop/tas12r/

Motor RPM: 1600
Airflow: 85m3/h

 

[Gareth J]

If it's a DC fan (probably not though) you can get temperature controlled pwm widgets.

You'd need to sit the thermocouple sensibly but is a good way to throttle back cooling fans

 

[Richard.]

Just be careful.
They might be noisy but they are shifting a proportion air through that machine which has been calculated to ensure it meets the duty cycle figures it states.
If you change that fan for a quieter one you are essentially changing it for one that shifts a lower volume of air and in turn if it’s not being cooled as efficiently then you potentially lower the duty cycle.
Fans are essentially silent things it’s the blades movement through the air that makes a racket. Powerful fans make more noise. Lower the noise, lower power, lower cooling efficiency and potentially lower DC so be careful

 

[chevy2]

An option if you're prepared to do the work is convert it from constant running to thermostically controlled,
A thermo switch from a fan-ondemand machine placed in the correct location will ensure that it cools correctly when you work the machine hard to ensure its protected,
Had an r-tech several years ago and the fan on that was almost unbearable especially if i knew it wasn't really needed at low amps.

 

[discomikey]

Just be careful.
They might be noisy but they are shifting a proportion air through that machine which has been calculated to ensure it meets the duty cycle figures it states.
If you change that fan for a quieter one you are essentially changing it for one that shifts a lower volume of air and in turn if it’s not being cooled as efficiently then you potentially lower the duty cycle.
Fans are essentially silent things it’s the blades movement through the air that makes a racket. Powerful fans make more noise. Lower the noise, lower power, lower cooling efficiency and potentially lower DC so be careful

Thankyou for the concern.

Your point is definitely 100% valid but i have been checking out whats available online and cross referencing the current fan's details to match, especially flow in CFM. You can get quieter fans with the same flow capacity

 

[Farside]

Thankyou for the concern.

Your point is definitely 100% valid but i have been checking out whats available online and cross referencing the current fan's details to match, especially flow in CFM. You can get quieter fans with the same flow capacity

Grilles contribute a lot of noise, too. The perforated panel type is the worst, so best to cut that out entirely and replace it with a wire one.