Zur Vermeidung von Querkräften werden oft Linearführungen eingesetzt. Wie ist der Einfluss auf das Messergebnis?
Any ball bearings or linear guides with ball bearings or any sliding guides without ball bearings, i.e. in series or parallel to the force sensor should be avoided.
You will always see a "zero signal return error" in this case, and hysteresis on load reversal.
This effect will even increase over time, because the balls of the linear guide only move a few micrometers in place, the force sensor only covers a few micrometers to a maximum of a few 100 µm measuring path.
It is often better to load the force sensor with a lateral force.
With some force sensors there is a (load-dependent but reproducible) error due to lateral force.
Sensors of the KD, KDs, KR70, KR110 series are particularly insensitive to lateral forces.
Sensors with particularly large dimensions are also particularly good at compensating for lateral forces, since they generally have the corresponding higher mechanical rigidity against lateral forces and bending moments.
Use with small forces, < 10N
The KD34s 0.5N sensor is well suited, also for lateral forces.
Maybe I would even use a model with 1N or even 2N here, due to the higher rigidity and the resulting higher natural frequency and the associated better reproducibility, because there are fewer natural vibrations in the system overall.
KD40s 2N or KD24s 2N would also work.
Use with medium forces <1 kN
The KD80s and KD140 sensors would be recommended here.