QFR1212GHE 120x38mm 6000RPM Cooling Fan 4pin for Antminer L3+ S9 S17 T17 S19

QFR1212GHE 120 × 120 × 38mm 6000RPM Cooling Fan | 4-Pin Replacement for Antminer L3+ / S9 / S17 / T17 Chassis Cooling

The QFR1212GHE is a 120 × 120 × 38mm (12cm) high-speed cooling fan for Antminer L3+ / S9 / S17 / T17 chassis cooling. DC 12V / 2.7A, 6000 RPM, 210.8 CFM airflow, 24.6 mmH₂O static pressure, 64 dB-A acoustic level — built for the dense fin pattern of Antminer-style heatsinks where static pressure (not just airflow) determines whether the air actually penetrates the stack.

Drop-in replacement when the original chassis fan locks up, bearings get noisy, or the fan stops spinning altogether — symptoms that drive the miner into thermal protection and shutdown. The QFR1212GHE uses high-precision double ball bearings rated for 80 000 hours operation at 25°C ambient, with a PBT + 30% glass fiber + V0 flame-retardant frame and blade that survives the heat near the miner exhaust.

When to Replace the Fan

• Antminer chassis fan stopped spinning — bearing seized, miner trips OTP on first sustained load.
• Audible ticking or grinding from the fan — bearing wear, replace before it seizes.
• Fan running but tach reads zero — broken tach wire or hall sensor in the fan body.
• Dust-clogged blades after long outdoor / shed duty — cleaning doesn't restore balanced airflow, replace.
• Thermal-shutdown logs after hot-weather hashing — original fan no longer hitting rated airflow at high ambient.

QFR1212GHE Specifications

FAQ — QFR1212GHE Cooling Fan

Q: Match the original wire colours, or just power + GND?
A: Match all four. Power and GND alone will spin the fan, but the Antminer firmware reads tach feedback and PWM and will trigger fan-failure errors / shutdowns if either is missing. Confirm pinout against the original fan before swapping connectors.

Q: Mount direction — blow into the chassis or extract?
A: Follow the airflow arrow printed on the fan housing and match the original orientation. Antminer chassis cooling is designed for a specific airflow path through the hashboards — reversed orientation kills the cooling efficiency and can shorten hashboard life.

Q: Will this fan work on hot-aisle deployments?
A: Yes — 80 000-hour rating at 25°C ambient is the published figure; expect proportionally shorter life at higher ambients (consult the bearing manufacturer's L10 curve for the actual derating). For high-ambient deployments, plan on replacement cycles every 2–3 years.

Q: Bulk pricing for fleet maintenance?
A: Yes — email contact@lys-sz.com for case-quantity QFR1212GHE pricing.

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Antminer fleet operators stocking QFR1212GHE replacement fans by the case? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.