17 planetary gearbox 42 stepper motor reducer for 3D printer geared stepper motor-1 to 26.8

NEMA 17 planetary gearbox 42 stepper motor reducer for 3D printer geared stepper motor

Cla 1 :  gearbox Length : 27.3mm ; Gear Ratio： 1:3.17,  1:5.18

Cla 2 :  gearbox Length : 35mm ;    Gear Ratio： 1:13.76,  1:19.2,  1：26.8

Cla 3 :  gearbox Length 42.7mm ;   Gear Ratio： 1：51 ， 1：71 ， 1：99.5 1: 139

Matching Stepper motor drawing :

3.17 13.76 19.2 51 71 99.5 ratio Plantary need to use 5mm diameter shaft stepper motor

1:5.18; 1:26.8; 1:139 ratio Plantary need to use 3mm diameter shaft stepper motor

About shipping
Shipping and Packaging All itwill be double checked and well packed before sending.Itwill be dispatched within 2 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for remote areas,it may take a little longer). 

Special Announcement:
Please fill in the correct and detailed consignee, address and phone number in the order. For fast and correct delivery.If you do not receive order within 30 working days,please feel free to contact Customer Service before leaving Negative and Neutral Feedback, we will do our best to help you resoe the problem.TaxNo, you will only pay what is quoted as total cost at checkout, no more. You are not expected to pay any additional duties or taxes. If you are asked by Customs or our logistic partner to pay duties, please contact our Customer Service .

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If the product is not on good condition, You can return this product within 14 working days, please contact customer service center before returning.FeedbackYour satisfaction is our first priorityIf you receive the order and it is in good condition,we would be grateful if you would leave us 5 star Positive Feedback for the transaction.