Isn't the RK 24 considered a limited category 1? I know the RK site lists it as Category I 3-pt. hitch but I think that may be a misleading when comparing it to other tractors that size.
Is there actually a definition (with numbers) for limited cat 1 like there is for cats 0, 1, 2, 3 etc? I've read that what makes a cat 1 "limited" is the lack of lift height due to the shorter nature of some SCUTs. The RK24, however, has larger tires than most other SCUTs of similar size, so this may negate the issue. Maybe someone who has more knowledge can offer a better understanding here?
I can't help with terms like "limited cat 1". I can tell you a Japanese cat 0 rating has much in common with the American cat1, such as pin diameter. The spacing between arms though is the same as the American cat 0. I don't know that there is a firm definition for "limited" cat I. Three-point hitch - Wikipedia