WINSINN 40mm Fan 5V Brushless 4020 40x20mm for Cooling PC North South Bridge Chip - High Speed (Pack of 4Pcs)

• ✔️️Oil bearings 4020 Fan - High Speed version
• ✔️️Oil bearings, use time no more than 16 hours / day. The life expectancy is about 30,000 hours. Lubricating oil is required to maintain the bearing.
• ✔️️Rated voltage: DC 5V
• ✔️️Size: 40x40x20mm
• ✔️️Made by WINSINN

Enhance Your Device’s Cooling with WINSINN 40mm 5V Hydraulic Bearing Fans Keep your electronics running efficiently with this 4-pack of 40mm 5V fans. Perfect for 3D printers, DVRs, and small devices like routers or mini PCs, these fans provide reliable cooling in compact spaces. The 30cm cable with XH2.54-2PIN connector allows for flexible installation, while the brushless motor ensures consistent performance without frequent maintenance. Why Choose These Fans? Hydraulic Bearing Technology: Eliminates the need for oiling, reducing maintenance compared to traditional oil-bearing fans. Optimized Airflow: Delivers 7.96 CFM at 7000RPM (±5%) for efficient heat dissipation in tight spaces. Quiet Operation: At just 27dBA, these fans maintain a peaceful environment—ideal for home or office use. Extended Durability: Built to last up to 35,000 hours (recommended ≤8 hours/day use) for long-term reliability. Certified Quality & Easy Integration CE, FCC, and ROHS certifications ensure safety and environmental compliance. The 5V DC input is compatible with a wide range of devices, making these fans a versatile choice for various applications. Package Includes & Usage Tips Each order contains four 40x20mm fans for multiple replacements or setups. For best results: Confirm your device’s voltage matches the 5V rating. Ensure unobstructed airflow during installation. Clean dust periodically to maintain performance. Whether you’re upgrading a 3D printer or cooling a small electronic device, these fans offer a balance of efficiency, quietness, and durability at an affordable price.