Need more infomation on Motors with Gear boxes Aliexpress

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Yang Lu

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Jun 3, 2020, 10:21:57 PM6/3/20
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Hi Sir,

I need to know the hole diameter before I can order.  

For 3D Printer Stepper Motor Nema 17 Planetary geared Gearbox All Ratio 17HS2408S 3401S 4401S 6401S 8401S motor|Gears| - AliExpress
Hole Diameter:
  • 17HS2408S-PG
  • 17HS3401S-PG
  • 17HS4401S-PG
  • 17HS8401S-PG
  • 17HS6401S-PG
Thank you,

Westech Systems

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Jul 13, 2020, 8:15:31 PM7/13/20
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If you are in the US check Amazon. a couple dollars more but you'll get it fast. I ordered from the BOM link and they took 2 months + and the quality of the motor and housing were not great.

I ordered:

motor length: 34mm + Ratio 3.71-1 (17HS3401-PG3.71)

If it didn't eventually arrive I was going to buy:


Usongshine Nema 17 Geared Stepper Motor Gear Ratio 5.18:1 Planetary Gearbox for 3 D Printer DIY CNC Robotics$28 AMAZON



The gear ratio is slower, but should work.


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