You may find that your original 3D printer cooling fan has malfunctioned, or its blades have broken or been stripped entirely. These fans are necessary to prevent heat creep, which will affect or damage your extruder assembly, and thus your finished prints.
Specification:
Size: 50mm*50mm*15mm
Bearings: Ball bearing
Voltage : 24V
Current : 0.1A
Speed?5589±10%RPM
Noise Level?30dBA
Connector Type: 2 Pin-ph2.5
Cable Length: 30CM