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 Post subject: US source of NMB 120mm fans?
PostPosted: Sat Nov 09, 2002 4:46 am 
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Joined: Sat Nov 09, 2002 4:40 am
Posts: 156
Hello, Sledge the n00b here.

I'm trying to get my hands on NMB DC4710NL 04W B20 P00 120mm fans. Does anyone know of a good US source for these fans?


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PostPosted: Sat Nov 23, 2002 6:38 am 
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Joined: Sat Nov 23, 2002 6:33 am
Posts: 8636
Location: Sunny SoCal
http://www.newark.com has the B30 120mm fans in stock. Here: http://www.newark.com/NewarkWebCommerce/newark/en_US/support/search/searchResults.jsp?_dyncharset=ASCII&action=0&First=0&QText=50F5409&x=10&y=7.

They've got a better selection of the 38mm NMBs here: http://www.newark.com/NewarkWebCommerce/newark/en_US/support/search/searchResults.jsp?APart=4715KL&MName=NMB&action=1&First=0&MPart=&NPart=&UNSPSC=&KWord=&advancedSearch.x=27&advancedSearch.y=6


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PostPosted: Tue Nov 26, 2002 11:04 pm 
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Joined: Sun Aug 11, 2002 3:26 pm
Posts: 428
Location: San Francisco, CA
Whats the cfm/db spec on these fans?

-Ken


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 Post subject:
PostPosted: Tue Dec 31, 2002 9:58 am 
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Joined: Sat Nov 09, 2002 4:40 am
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Thank you


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 Post subject:
PostPosted: Tue Dec 31, 2002 9:20 pm 
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Joined: Mon Dec 09, 2002 7:11 pm
Posts: 7372
Location: Maynard, MA, Eaarth
Quote:
Whats the cfm/db spec on these fans?


I did some digging on the link that Ralf posted, and here's what I got:

119mm SQUARE x 25mm (4.69" SQ. x 1.00") LOW-NOISE BOXERâ„¢ FANS PLASTIC IMPELLER AND VENTURI

Type
Connections
Bearings
VDC
Watts
rpm
cfm
dBA
Stock No.

4710NL- 04W- B10D00
Lead Wire
Ball
12
1.44
1550
59
27
50F5407

4710NL- 04W- B30P00
Lead Wire
Ball
12
2.88
2050
80
35
50F5409

4710NL- 04W- B50D00
Lead Wire
Ball
12
6.84
2550
92
41
50F5411

The first one (B10) looks nice: 1550RPM @ 12V = 59CFM @ 27dBA; all for a little less than $15...

_________________
Sincerely, Neil
http://neilblanchard.blogspot.com/


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 Post subject: Other 120mm/12cm fans
PostPosted: Wed Jan 01, 2003 10:41 am 
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Joined: Mon Dec 09, 2002 7:11 pm
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Location: Maynard, MA, Eaarth
To expand this thread a bit, here are all the 120mm/12cm fans that are for sale on NewEgg.com in alphabetical order:

Enermax Adjustable 1500-2300RPM user adjustable $13 + $6 shipping. The fan is clear (woo woo!) and it comes with a wire grill (it's gold color!!) and it has a screw-type potentiometer for adjusting the speed -- nice. The motor hub is pretty small (so the blade area to move air is a good 85% of the 113 sq. cm), and it has 6 curved blades with radiused tips. http://www.newegg.com/app/Showimage.asp ... 012-03.JPG

Panasonic FBA12G12U1A 2750RPM 114(.7!!)CFM @ 45.5dBA with "hydro wave" bearings. $12 + $5 shipping. It has a larger motor hub than the Enermax -- my guestimate is that it has 79% blade area. It has 7 curved blades with radiused tips. http://www.newegg.com/app/Showimage.asp ... 009-02.JPG

Sunon has two 120mm fans, and both are 3100RPM monsters! One has 5 straight blades with sharp leading corners/ radiused trailing, rated at 90CFM ($10 + $6), and most of the reviews say that it is LOUD! It's hub is similar to the Panasonic. http://www.newegg.com/app/Showimage.asp ... 003-02.jpg The other Sunon is a 38mm deep model rated at 108CFM ($12 + $6), and it also has 5 blades, but they are flared wider at the outer ends and radiused. The reviews have this one as noticeably quieter than the other Sunon. http://www.newegg.com/app/Showimage.asp ... 007-03.jpg

Thermaltake has a 2000RPM 78CFM ($10 + $6 backordered) It has 7 curved blades with sharp corners, and possibly the smallest motor hub of the group. http://www.newegg.com/app/Showimage.asp ... 113-04.JPG Most other Thermaltake fans that I have seen reviewed have noisy bearings and lots of vibration -- this one has no user reviews.

Vantec has a 120mm Stealth that runs at 1500RPM with 53CFM ($18 + $6) It has a medium sized motor hub with 7 curved blades and smallish radii. It also appears to have it's hub supports on the exhaust side. http://www.newegg.com/app/Showimage.asp ... 614-02.JPG

That's it. One half dozen 120mm fans, and one (at least) is an obvious non-starter (the cheaper Sunon) at 12V, anyway.

From Directron http://www.directron.com/quietfans.html there are a couple more:

Ever Cool 2000RPM, 79CFM, 30dBA, 7 very curved blades w/ sharp tips, aluminum frame and silver plastic fan, small motor hub. $12 + shipping

Panasonic L1A is rated at 30dBA and ~68CFM, no RPM listed. This is a 7 curved blade design and is otherwise similar to the faster Panasonic. $19 + shipping

Papst 4412 FGL is rated at 26dBA with 1600RPM and 55CFM. It has 5 straight blades and a medium sized motor hub. $19 + shipping

Combining these 9 with the 3 NMB's in order by increasing RPM:

Vantec
NMB #1
Pabst
Thermaltake, Ever Cool
NMB #2
Enermax (at full speed)
NMB #3
Panasonic
both Sunons

Panasonic L1A - unrated

In CFM order, lowest to highest:

Vantec
Pabst
NMB #1
Panasonic L1A
Thermaltake
Ever Cool
NMB #2
cheaper Sunon
NMB #3
other Sunon
Panasonic

The Enermax is unrated, but it might fall in the ~50CFM to ~90CFM area based on it's RPM range.

So, the Enermax looks quite interesting due to its built-in adjustabilty. The Pabst is quietest (rating) @ 12V, with the NMB #1 close behind. The Vantec and NMB #1 have potential to be very quiet but it would also move the least air (guessing at undervolting). The Thermaltake would have to have good bearings and balance (duh!) to be quiet.

As for the behemoth CFM Panasonic and Sunons, it would depend on how they behave at lower voltages. The Panasonic gets the nod for moving more air at 88% of the RPM of the Sunons.

If I get a new case that uses a 120mm fan, I'd be happy to try these out -- unless someone else wants to do it! ;-)

_________________
Sincerely, Neil
http://neilblanchard.blogspot.com/


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 Post subject:
PostPosted: Sun Jan 05, 2003 11:59 am 
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Joined: Tue Aug 27, 2002 2:44 pm
Posts: 56
Location: Escondido, CA
if u do a little digging, u will find some awesome 120mm fan deals at

http://www.goldmine-elec.com/


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