Geared timing belt and motor assembly (CNC)

A motor assembly for a NEMA23 to drive itself along a static 10mm GT2 belt. Geared 1:3 and using very little extra components.

Requires:

• a GT2-200 timing belt loop
• a 60:20 teeth GT2 dual gear (6mm hole)
• a pair of 626 bearings for that
• a 6mm axle for all of above (43 mm)
• a pair of 608 bearings to reverse the main belt around the driving pulley
• a 8mm axle for that (43mm)
• 4x M5 20mm screws to assemble the 3 parts
• NEMA23 stepper motor
• 4x bolts, nuts and washers to attach it.

Printed in three separate parts, rotating them removes the need for any supports.

Inserting the bearings most likely requires significant force. I used a small arbor press. Remember to not apply force on the center of the bearing but the outer ring only.

Print Settings

Printer:

TronXY X5S

Rafts:

No

Supports:

Yes

Resolution:

0.3

Infill:

15%

Filament:

any