What is cat 1 or cat 2?

Cat 1 or Cat 2 refers to Category 1 and Category 2 three-point hitch sizes on tractors, which are standardized systems for attaching rear implements like mowers, blades, and tillers. Category 1 is for small compact utility tractors with 20 to 45 horsepower, such as John Deere 1025R and Kubota L series, with specifications lower link pins 7/8 inch diameter, top link pin 3/4 inch, spacing between lower arms about 26 inches, and lift capacity up to 2000 pounds, used for light-duty 4 to 6 foot implements for hobby farms and landscaping. Category 2 is for larger utility tractors 40 to 100 horsepower like John Deere 5075E, with larger pins lower 1-1/8 inch, top 1 inch, spacing 32 inches, lift capacity 3000 to 5000 pounds, used for heavier 6 to 8 foot implements for larger farms. The categories were developed to ensure interchangeability, any Cat 1 implement fits any Cat 1 tractor regardless of brand. The choice between Cat 1 or Cat 2 depends on tractor size and work needed, if you have small acreage and sub-compact tractor, you need Cat 1, if you have larger acreage and need heavy tillage, you need Cat 2. You can use Cat 1 implements on Cat 2 tractor with bushings that sleeve smaller pins to fit larger holes, but not heavy Cat 2 implements on Cat 1 tractor as they overload hydraulics.