MK8 Direct Drive Extruder 0.4mm / 1.75mm for Prusa i3 HICTOP Reprap 3D Printer

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  • $18.99
  • Regular price $24.99

This is All Metal single head MK8 extruder. Extruder made of aluminum alloy and anodized yellow. It comes with NEMA 17 stepper, heater cartridge 12V 40W, Thermistor NTC 3950, 12V 40mm Fan, 70cm long stepper cable. Extruder uses high torque stepper motor, it should have no problem pushing filament through 0.4mm nozzle.

Extruder technical specs:

  • Nozzle: 0.4mm
  • Filament size: 1.75mm PLA/ABS or other 3d print materials
  • Flow rate of Nozzle: about 24cc / h
  • Heating element voltage: 12V
  • Heating element power: 30-40 Watt
  • Thermistor: 100K NTC 3950
  • Cooling fan voltage: 12V
  • Net weight: 450g

Stepper motor parameters:

  • Step angle 1.8 deg
  • Body length: 40mm
  • Holding torque: 500 mN*m / 70 oz*in
  • Resistance Per phase: 2.5 Ohm
  • Length of cable wiring: 70 cm

NTC 3950 Thermistor parameters:

  • In Marlin firmware use TEMP SENSOR #11 for 100k beta 3950
  • Nominal resistance: 100K
  • Temperature range: -40C to +30C