14.6 Toothed belt tension
Standard checking
Over half the tightening length S=145 the toothed belt 1 must bend
under the test load Fv=6 N so that the loaded belt just touches the
unloaded one.
Correction
Remove the single piping stop completely. (See chapter 14.4).
Pull the lower belt against the upper one through the opening in the
rest table by means of a spring balance.
Loosen 4 motor fastening screws and turn core pin 3. The belt
tension changes.
Tighten the screws 2 again and reinsert the single piping stop.
Consequences of a too high belt tension
Reduced durability of the toothed belts
Reduced durability of the step motor
Noisy running
Consequences of a too low belt tension
No faultless meshing
The teeth may skip over under load
3
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2
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