Hi team, Can you let me know what size coupler I need for the

General CNC CNC Routers
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1

Hi team,
Can you let me know what size coupler I need for the R7 ball screws?

My coupler isn’t quite catching the ball screw correctly and is bending to one side. This causes the call screw to rotate with a wobble.

8f7d107e2cdc4157fba3ae9c58ab6c28.png
8f7d107e2cdc4157fba3ae9c58ab6c28.png640×1136 246 KB

2

Hi Kevin, your using ball screws or the stock ACME screws? The stepper motor shaft is 6.35mm and the ACME is an 8mm so they ship with a 6.35 x 8

3

Ah! ACME screws I guess since that is what it came with. Thanks a lot for the reply.

4

Brandon have you or anybody else experienced the eccentric washers moving and loosening the wheels in the gantry assemblies? Lately I have found myself having to tighten them. Do you recommend using lock tight to fix them in place after finding a good tension?