A life time
i have a 1956 singer that sews like a dream and I have a 20 year old Viking( bought new 20 years ago) I expect it to last forever. It might not, but I try to take care of it so it will last me as long as I’m still sewing. I find the idea of having to purchase a new machine very daunting. My Longarm I did upgrade/ buy a new one 5 or 6 years ago. Now I’m hoping that is it- will last the rest of my life