Kobra 3 Z-axis belt tensioner

Z-axis belt tensioner to remove the gap present with the untensioned belt

Print profile ready to be printed

to keep the tensioner centered, fit the half with the nut slots in the lower part

The pulley must be mounted with the bearing lip facing downwards

Version 1

Tension pressure not changeable.

I will upload new versions soon with fixed but higher pressures

additional material list

1x Nut M4 7mm

1x Nut M8 13mm

1x Bolt M8 x 30mm

1x Bolt M4 x 16mm

1x Bearing 608 22x7x8

Edit:

added 4 new versions:

+1mm

+2mm

+3mm

+4mm

increase the length of the object and consequently the relative pressure on the belt