نقبل الدفع بالعملة المشفرة — لذلك يمكن للعملات الرقمية التي تملكها أن تشتري أجهزة حقيقية.ادفع بالعملة المشفرة، وأنفقها على أجهزة حقيقية. شحن مؤمن مجانا إلى كل أنحاء العالم لما يتجاوز 399 US$. صناديق شحن بسيطة بلا علامة تجارية، ترسل من ألمانيا.شحن مؤمن مجانا لما يتجاوز 399 US$. يُقفل سعرك لمدة 30 دقيقة بمجرد فتح صفحة الدفع.السعر مقفل لمدة 30 دقيقة. كل قطعة مختومة، ورقمها التسلسلي متحقق منه، ومشمولة بضمان 24 شهرا.مختوم، وبضمان 24 شهرا.

قائمة الرصد تسجيل الدخول
Black 40mm square axial fan with four-pin PWM connector

SXDOOL

SXDOOL 40mm 12V PWM Case Fan 4028 14000RPM 0.75A Black

SKU CH-9TZY-J76WR

40 mm 12 V PWM fan spins to 14 000 RPM with dual ball bearings, 4-pin control and 24.03 CFM airflow for compact PC or server cooling

  • TypeCase Fan
  • Fan Size40mm
  • Bearing TypeBall
  • RPM>7000 RPM
  • Air Flow20-25 CFM
  • Noise Level> 50 dBA
  • High-speed cooling at 14000 RPM for demanding server workloads
  • PWM 4-pin control enables precise speed regulation down to 7000 RPM
  • Dual ball bearing design built for continuous 24/7 operation
  • Compact 40 × 40 × 28 mm frame fits tight 1U chassis
  • Delivers 24.03 CFM airflow at 55.00 dBA noise level

40mm 12V PWM Case Fan

The SXDOOL 40mm fan fits 4028 mounting holes and runs on a 12V four-pin PWM connector. It suits compact servers, small-form-factor PCs or replacement cooling where a high-speed 40mm frame is required. Builders needing larger airflow or quieter operation should choose a bigger fan format. The dual ball bearing supports continuous rotation at the rated speed.

Thermals noise and power

At the rated 14000 RPM the fan moves 24.03 CFM while producing 55.00 dBA of noise. Current draw is 0.75A with a typical running value of 0.55A. The PWM interface allows the motherboard to lower speed and noise when full flow is not needed. No LED lighting is present on this black model.

Sustained load behaviour

The dual ball bearing is designed for long-term high-speed operation without sleeve-bearing wear. Speed holds at 14000 RPM ±10% under constant 12V supply, so airflow remains stable during extended server or workstation loads. The four-wire connection reports real-time RPM to the controller for fan-fail detection. Noise stays above 50 dBA whenever the fan runs near maximum speed.

أبرز المميزات

  • High-speed cooling at 14000 RPM for demanding server workloads
  • PWM 4-pin control enables precise speed regulation down to 7000 RPM
  • Dual ball bearing design built for continuous 24/7 operation
  • Compact 40 × 40 × 28 mm frame fits tight 1U chassis
  • Delivers 24.03 CFM airflow at 55.00 dBA noise level

المواصفات

TypeCase Fan
Fan Size40mm
Bearing TypeBall
RPM>7000 RPM
Air Flow20-25 CFM
Noise Level> 50 dBA
Power Connector4 Pin
ColorBlack
LEDNon-LED

أسئلة حول هذا المنتج

How do I install the 40mm fan with its 4-pin PWM connector, and what step is often missed?

Mount the 40x40x28 mm frame using the four corner holes, plug the 4-pin connector into a PWM header so the motherboard can control speed, and verify in BIOS that the header is set to PWM mode — not DC — otherwise the fan will run at fixed 14000 RPM.

What maintenance or replacement will the dual ball bearing need later?

The dual ball bearing is sealed and rated for continuous operation at 14000 RPM; no lubrication is required, but expect replacement after several years when noise rises above the specified 55.00 dB(A) or speed drops below 7000 RPM.

What limit appears first during sustained 14000 RPM operation?

At 0.75 A the 12 V line delivers 9 W, so the first limit is thermal — the small 40 mm frame cannot dissipate that heat indefinitely, causing the PWM controller to throttle speed below 14000 RPM to protect the motor.

أيضًا في هذا القسم

عملاء قارنوا هذه المنتجات

نفس القسم، ونفس صفحة الدفع — ثماني عملات رقمية وقفل سعر لمدة 30 دقيقة.