Does anyone know how much the Bear squat machine weighs without any weight on it? Just squatting on it by itself?
The ‘weight’ of the lever arm you move does not directly correlate to weight on a barbell or any other machine, based on the way the machine works. The answer to your question has no applicability in the real world. That’s why their own website doesn’t have the information you’re looking for.
All that’s necessary for tracking progression is tracking the weight you add to it, not including empty weight.