K40-S Motors

Background

Identifying motors in my K40-S as part of my conversion

The  K40-S BUILD INDEX with schematics

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What steppers are in my machine?

Y stepper: 17HM4410N-03AD-Z
X stepper:17HM3448N-15AD

K40 X stepper in my K40.

Motor specs

+Frederick Deryckere  over @ man made mahem found the vendor and specs for the motor.

From his blog: "After a while though I got lucky and stumbled upon the website of the original manufacturer of the motor: http://www.baolongmotor.com. In the end, the ‘dragon’ logo was a dead giveaway. I contacted their support team, and they proved surprisingly helpful. Below is the spec sheet they sent to me, accompanied by the sheet of the replacement motor I bought (not from them ;-)). Seems close enough to me."

Y motor: 

Vendor; Spec sheet, Mech Drawing

X Motor

Others I know of

NEMA 1742BYGHW609

Series Model	Step Angle (°)	Motor Length (mm)	Rated Current (A)	Phase Resistance (ohm)	Phase Inductance (mH)	Detent Torque (N.cm Max)	Holding Torque (N.cm min)	Lead Wire (No.)	Motor Weight (g)
17HW3448N-21AD	0.9	34	0.48	20	25	0.8	25	4	450

Motor Replacements

I have not used these motors but collected the links from others who have.

https://www.aliexpress.com/item/Free-shipping-1-PCS-17HS2408-4-lead-Nema-17-Stepper-Motor-42-motor-42BYGH-0-6A/32590189283.html?spm=2114.01010208.8.9.IGCnWy

Pictures of K40 tension adjustment assy:

• https://www.dropbox.com/s/5ydakcuro4xwdxi/20160615_133834.jpg?dl=0