Z axis hesitating

[Janste]

Hi clive
it isn't biding when I turn the knob at the top of the motor it's notchy but just like the other motors
any other ideas I may try

[cropwell]

If you can swap connections around, try changing with another axis to see if the problem is transferred. If it is , it's electrical. If not it is mechanical.

[njhussey]

If Mach is showing it as moving but it's not is the Z axis coupling slipping?

[Janste]

I will try swapping the connections around and see what happens
also will look to see if the z axis coupling slipping (not sure where to look for this tho?)

thank you all for the positive replies
I have heard the wiring to there are a little suspect
would I be able to purchase better wiring from say Maplin (what size gauge etc)
or is it a more specialized shop

thanks

[njhussey]

I will try swapping the connections around and see what happens
also will look to see if the z axis coupling slipping (not sure where to look for this tho?)

It connects the Z axis stepper motor to the Z axis ballscrew/leadscrew....looks a bit like this probably...

[Janste]

thanks
will I find allen type head bolt in the holes that may need tightening

[njhussey]

Depends on the type fitted to your machine, generally I believe they're socket head cap bolts so yes.