W12E12BS11B5-07 12cm 12V 1.65A Cooling Fan for Antminer S9 S20 S21 series
Couldn't load pickup availability
Have questions about this product? Our team is here to help — just reach out on WhatsApp.
💬 Contact Us on WhatsAppAbout the Product
W12E12BS11B5-07 Nidec 12cm High-Speed Cooling Fan – Antminer S9 / S19 / S20 / S21
The Nidec W12E12BS11B5-07 is a 120 x 120 x 38 mm high-airflow 6000 RPM cooling fan engineered for continuous-duty operation inside Bitmain Antminer S9, S19, S20 and S21 miners. Built with a high-precision double ball bearing and a compact streamlined blade profile, it delivers strong static pressure through dense hashboard heatsinks while keeping vibration low. Stock fans often fail first on long-running ASIC miners — swapping in this original-spec Nidec restores proper thermals and prevents cascading chip failure.
W12E12BS11B5-07 Fan Specifications
| Feature | Specification |
|---|---|
| Model | W12E12BS11B5-07 |
| Manufacturer | Nidec |
| Size | 120 x 120 x 38 mm (12038) |
| Bearing | High-precision double ball bearing |
| Voltage | 12 V DC |
| Current | 1.65 A |
| Power | 14.8 W |
| Rotation Speed | 6000 RPM |
| Airflow | 180.15 CFM |
| Connector | 4-pin PWM |
| Compatible Miners | Antminer S9, S19, S20, S21 series |
| Weight | 380 g |
| Condition | Brand New |
When to Replace Your Antminer Fan
Typical fan failure symptoms on Antminer S9 / S19 / S21 include: rising chip temperatures at constant ambient, increasing fan noise with rumble, miner throttling hashrate below nameplate, or outright fan-stall errors in the control panel logs. Running a miner with a weakened fan will eventually damage hashboard ASICs — far more expensive than a fan swap. The W12E12BS11B5-07 is a drop-in replacement for the stock Antminer fan with matching RPM and static-pressure profile.
Why High Static Pressure Matters
Antminer hashboards are packed with dense heatsink fins. Ordinary case fans move a lot of air in open space but stall against dense finstacks — a high-static-pressure fan like the Nidec W12E12BS11B5-07 maintains airflow through the restriction, keeping silicon junction temperatures in safe range. The double ball bearing is rated for long-duty 24/7 operation and is the same bearing grade used on Bitmain's original fan orders.
Related Antminer Cooling Fans
- W12E12BS11B5-07 – Antminer S21 / S19K 4-pin Variant
- DF1203812B2UN Martech L7 / S19 12cm Fan
- Antminer S19K Pro 12cm 4-pin Cooling Fan
- Martech 7000 RPM Cooling Fan – S21 / S19K Pro / L9
Keep your Antminer hashing cool and steady. Order online or contact us at contact@lys-sz.com for bulk pricing and farm-scale fan replacement programs. Worldwide shipping from our Shenzhen warehouse.
Buying in bulk for a mining farm or repair shop?
Get dedicated B2B pricing on this part and across our full catalog — quote response within 24 hours, payment by T/T USD bank wire, and DDP delivery available for US & EU customers (and other lanes on request).
