Product Description


Nidec R40W12BS4D8 12V 2.1A Counter-Rotating Fan Brushless High Power Cooling Fan

This is a Counter-Rotating Fan produced by Nidec Company. This fan is overlaid by two fans, the rotating directions of these two fans are opposite. 

This fan is with server high static pressure and air flow, with high quality and long lifespan, it can work continuously for 50000 hours. 

Each fan comes with  two pieces NMB bearings, it’s with built-in drive circuit, PWM speed adjusting and rotation speed signal output.

When connect to power without PWM signal, the fan will work at its highest speed. Please pay attention to safety when using due to it’s high rotating speed. 

Users can parallel the two PWM wire of the two fans together to adjust the speed. We do provide the PWM Signal Output Module,  Click Here to check details.

Recommended PWM frequency: 20 - 25 KHz

Recommended PWM Duty range: 20 - 100%

Attention: The positive and negative pole of brushless motor cannot be reversed, the drive will be damaged if connected reversely!

2-8005-800



Specification:

Brand: Nidec

Model: R40W12BS4D8-07Z76

Rated Voltage: 12V (8-18V)

Rated Current: 2.1A

Maximum Air Flow: 0.99m³/min, 35CFM

Maximum Static Pressure: 953Pa , 3.82 inchH20

Rated Input Power: 25.2W

Sound Level: 68dBA

Rated Speed: 21400r/min

Bearing type: Dual ball bearing

Net weight: 90g



Package Included:

1PCS Nidec R40W12BS4D8 DC Fan


Note: If you need large quantity, we can provide wholesale for you with the best price, just contact us freely via Ebay Message.



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  • 1. Please confirm your shipping address is correct, we are not responsible for undeliverable address. We reserve the right to charge shipping fee for returned items due to wrong address.
  • 2. We ship to worldwide, items are generally shipped out within 1-2 business days after receiving confirmed payment, we provide tracking number freely for all buyers. 
    • 3. It usually takes about 7-15 business days for shipping to United States and 25-40 business days to other countries. Please make sure you accept the shipping time before order.
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    •     Any potential custom duty tax fee applied to the parcel are buyer's responsibility, buyers please make clearly of this point before order.
1. We offer 30 days money back return policy.
2. For all returned products, buyers MUST contact us for the returning address.
3. Buyers are responsible to pay shipping fees at their own cost to return products for exchange or refund.
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