KZ12038B012X 12V 2.80A 120mm Ball bearing Cooling Fan 4p
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KZ12038B012X 120mm 12V 2.80A High-Speed Cooling Fan for ASIC Miner
The KZ12038B012X is a 120x120x38mm 12VDC high-speed cooling fan built for ASIC mining chassis where airflow demand is high and a low-current 1.75A variant can no longer keep up. With a 2.80A rated current, a ~6000 RPM average speed and a 4-pin connector, it delivers the strong, focused airflow needed to keep hashboard heatsinks within thermal limits under sustained load.
Ball bearing construction is the key reliability feature for 24/7 mining duty. The 4-pin connector matches the standard miner control-board fan header pin-out (12V + GND + Tach + PWM).
Specifications
| Parameter | Value |
|---|---|
| Part number | KZ12038B012X |
| Condition | New |
| Size | 120mm x 120mm x 38mm |
| Rated voltage | 12V |
| Rated current | 2.80A |
| Rated speed | ~6000 RPM (average) |
| Bearing type | Ball bearing |
| Connector | 4-pin |
| Compatibility | ASIC miner chassis (12cm fan slot) |
| Application | High-airflow mining hashboard cooling |
Where the KZ12038B012X fits in the miner
The 120x120x38mm form factor matches the standard 12cm fan apertures on most modern Antminer-class chassis. The 2.80A rating is markedly higher than the lower-end 1.75A variants — useful on units that have been running hot, on overclocked configurations or in elevated ambient temperatures. The 4-pin connector ties directly into the control-board fan header for PWM speed control and tach feedback.
Compatibility
Replacement fan for 120x120x38mm 4-pin positions on ASIC miner chassis that already use a 2.80A-class fan or where additional airflow is needed. Confirm the 4-pin connector pin-out and the control board's expected current draw before installation. For a 1.75A variant, see the PSAD1A238BH in related products.
Common failure symptoms
- Miner reports fan-stop or fan-low alarm at startup or under sustained load
- Audible bearing rattle, grinding or whining from the front or rear of the chassis
- Hashboard temperature climbs to throttle threshold despite fans appearing to spin
- Dust impacted across the 120mm aperture reducing effective airflow
- 4-pin lead frayed or pulled at the strain entry into the fan hub
Frequently asked questions
How does the KZ12038B012X compare to the PSAD1A238BH?
Both are 120x120x38mm 12V 4-pin fans. The KZ12038B012X is rated at 2.80A vs 1.75A on the PSAD1A238BH — higher airflow at the cost of higher current draw and noise. Pick by the original spec marked on the miner's fan label.
Is the 4-pin connector PWM-capable?
Yes — the 4-pin pin-out provides 12V + GND + Tach + PWM. Speed is commanded by the control board's PWM duty.
Will the miner's control board supply 2.80A?
Most modern Antminer / Whatsminer control boards can supply 2.80A per fan header. Older boards may need verification before swapping from a 1.75A fan.
What other 12cm fan variants do you stock?
PSAD1A238BH 1.75A 6000RPM and DF1203812B2UN 12cm variants are stocked alongside the KZ12038B012X.
Related products
- PSAD1A238BH 120x120x38mm 12V 1.75A 4-Wire Fan for Antminer
- DF1203812B2UN Martech 12cm Fan for Antminer L7 / S19
- KZ14038B012U 14cm Cooling Fan for Whatsminer
- KF2510 6-Pin Vertical Fan Header Connector
Contact contact@lys-sz.com for volume pricing or compatibility questions.
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