Stepper Motors [3DPrint.Wiki]

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====== Stepper Motors ======


===== Extruder Stepper Motor =====

The stepper motors are all (externally) unmarked. As such, gathering information for them is quite dificult.
It is known that they are type NEMA 17, 2-phase hybrid bipolar. They are fairly easy to replace, however, as long as you know the specs you are looking to match.
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==== X and Y Axis Motors ====

NEMA17 - 40mm

170mm x 170mm x 400mm depth
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==== Z axis ====

NEMA17 - 34mm

170mm x 170mm x 340mm depth

Step Angle	1.8。

Step Angle Accuracy	±5% (full step, no load)

Resistance Accuracy	±10%

Inductance Accuracy	±20%

Temperature Rise	80。C Max.(rated current,2 phase on)

Ambient Temperature	-20。C~+50。C

Insulation Resistance	100MΩMin. ,500VDC

Dielectric Strength	500VAC for one minute

Shaft Radial Play	0.02Max. (450 g-load)

Shaft Axial Play	0.08Max. (450 g-load)

Max. radial force	28N (20mm from the flange)

Max. axial force	10N
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=== References ===
http://eng.bohongmotor.com/product/42BYGHB_4018.html?fbclid=IwAR2_02I2wV8S9-HutXkXvsazQwDZTvZizo63bPu6fPxzitGchzWKoX_kkyc
https://www.facebook.com/groups/470637449795481?view=permalink&id=901398366719385&fs=8&focus_composer=0&refid=18&ref=m_notif&notif_t=group_comment_reply&__tn__=S%2AW-R