For measurements, I need to remove the cranckcase cover again and it's gasket and drain oil. I have no motive yet. Everything is working. I will make a much more rough estimate, as a consumer: with other equal conditions, I will compare how much the installed bearing will run by mileage. If the mileage exceeds 2500 kilometers, even an ordinary industrial Koyo bearing, for which I paid 3 bucks, will clearly look better than what Barnett use.If you want to calculate the actual approximate thrust forces then I would suggest you measure the spring free length and also the collapsed preloaded length (spring pocket depth) and do some simple calculations.
But if you specify the bearing model used by you, which you advise, I will be grateful. The manufacturer mentioned here is practically not represented in our country, but I will try to find Koyo in similar parameters and order it in order to be ready for possible breakdowns.