Bitmain Antminer Replacement Fan 7200rpm | 120mm PWM | S21, T21, KS5, KS5 Pro, AL1, L9
The Bitmain Antminer 7200rpm Replacement Fan is a high-speed 120mm PWM cooling fan compatible with a wide range of Antminer models including the S21, T21, KS5, KS5 Pro, AL1, and L9 — featuring double ball bearings and adjustable speed control for stable, long-lasting ASIC cooling performance.
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The Bitmain Antminer Fan (7200rpm) is a high-performance 120mm PWM replacement fan designed to deliver reliable cooling for a wide range of Antminer ASIC miners, featuring adjustable speed control, double ball bearings, and a 12V DC power input for drop-in compatibility with supported Antminer models.
Specifications Table
| Field | Value |
|---|---|
| Type | Replacement Cooling Fan |
| Fan Size | 120mm |
| Speed | 7200 RPM |
| Voltage | 12V DC |
| Current | 2.61A |
| Lead Wire Length | 38 cm |
| Connector | 2×2 PIN |
| PWM Function | Yes (adjustable speed control) |
| Bearing Type | Double Ball Bearings |
| Airflow Depth | 38 CM |
| Compatible Models | Antminer S21, T21, KS5, KS5 Pro, S19j XP, S19k Pro, Z15 Pro, AL1, L9 |
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Questions & Answers
Which Antminer models is the 7200rpm fan compatible with?
This replacement fan is compatible with the following Antminer models: S21, T21, KS5, KS5 Pro, S19j XP, S19k Pro, Z15 Pro, AL1, and L9. If you are unsure whether this fan fits your specific Antminer unit or firmware version, contact our support team before ordering and we will confirm compatibility for your model.
What does the PWM function do on this fan?
PWM (Pulse Width Modulation) allows the fan speed to be automatically adjusted by the Antminer’s control board in response to real-time temperature readings. This means the fan can run slower and quieter when thermal load is low, and ramp up to full 7200 RPM when the miner is running at peak output — reducing unnecessary wear during lighter operation and ensuring maximum airflow exactly when it is needed.
What type of bearing does this fan use and why does it matter?
This fan uses double ball bearings rather than the sleeve bearings found in lower-cost alternatives. Double ball bearings handle the high-RPM continuous operation of ASIC mining far better — they tolerate higher temperatures, generate less friction over time, and deliver a significantly longer service life than sleeve-bearing designs, making them the correct choice for 24/7 professional mining deployments.
What connector does the Antminer 7200rpm fan use?
The fan uses a 2×2 PIN connector with a 38cm lead wire — the standard connector format used on compatible Bitmain Antminer models. This allows direct plug-and-play replacement without any soldering, custom wiring, or adaptor cables required.
How many fans does an Antminer typically require?
Most Antminer models use two fans — one intake and one exhaust — mounted on opposite ends of the miner chassis. If one fan fails, we recommend replacing both fans at the same time to ensure balanced airflow and avoid placing additional strain on the remaining functional fan during high-load mining sessions.
Can I order multiple fans at a bulk or bundle discount?
Yes. Bundle discounts are available for multi-unit fan orders, making it cost-effective to stock spare fans for large mining fleets or to replace both fans across multiple miners in one order. Contact our sales team for pricing on larger quantities.
How do I know if my Antminer fan needs replacing?
Common signs of a failing Antminer fan include: unusual grinding or rattling noise during operation, visible error codes or fan fault alerts in the miner’s management dashboard, unexpected temperature spikes or thermal throttling, or a physically non-spinning fan visible through the chassis vent. If your miner shows any of these symptoms, replacing the fan promptly will prevent further hardware damage caused by sustained overheating.
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