Part Specs

Extruder Cooling Fan Specs:

There are a million fan choices. Here are my "target" specifications to search for:

  • 40mm square
  • 10mm thick (can be 10.5mm in searches)
  • 12V
  • At least 4.7 CFM airflow
  • Reasonably quiet (say under 20db preffered but must meet airflow requirement above)
  • Bearing of choice (not getting into ball bearing VS VAPO VS sleeve, Vs whatever they come up with next)

Ebay extruder cooling fan: 12v 40mm Fan


  • Connector: 2pin (3pin adaptor included) (We only need 2 wires fans but can use 3 wire fans and ignore the 3rd wire)
  • MTBF: 30,000 Hours
  • Noise: 14.00dBA -Nice quiet fan!!!
  • Airflow: 4.11CFM (Correct airflow of 4.0CFM or better)
  • Rated Voltage: 12V (correct 12V rating)
  • Rated Current: 0.06A (current is a non issue)
  • Dimensions: 40.0 x 40.0 x 10.0 mm (correct same size as original)

Digikey Fan Search with these Specs

Duplicator I3 Mosfets

Board Mosfet information

Extruder Gear:

Extruder Gear Specs and Photos

X and Y axis pulleys:

X and Y Axis Pulley Specs and Photos?