Should my Z axis have a little play in it?

[Philly]

Right, I've managed to check in the daylight and it appears the coupler is one of those springy type ones and its allowing the whole z axis to move. Going to order a normal coupler, anyone have any recommendations?

Thanks

[Gary]

If you are using the coupling to support the load then it is all wrong, the coupling in only used to transfer the torque from the motor to the screw and absorb any radial movement.
They are not desigend to take any axial or radial load, also if you get a solid type then you will also have problems with movement becasue the motor will have a spring washer in the back and this will give about 0.5-1MM of movement.
You need to use a bearing arrangement to take any radial or axial loadings and without this the system will fail.

Right, I've managed to check in the daylight and it appears the coupler is one of those springy type ones and its allowing the whole z axis to move. Going to order a normal coupler, anyone have any recommendations?

Thanks