3 Point Hitch Technical Page from Agri Supply®
The 3 Point Hitch System is the standard used hitch system on most tractors today. Refer to Drawing A below. The purpose of the system is for the attachment of your agricultural implements, as well as the adjustment of your implements. As shown in Drawing B below, the top link and the two lower lift arms are the primary make-up of the 3 point hitch system. If you, the tractor operator, need to lower, raise or tilt your agricultural implement, a simple adjustment of any one, or all three of the primary pieces is all that it takes.
Definitions
CATEGORIES 0,1,2,3 & 4 = System used for classifying tractors by their drawbar horsepower. |
Maximum Drawbar
Horsepower |
Top Link Pin
Diameter |
Draw Pin
Diameter |
Lift Arm
Spacing |
| Cat. 0- up to 20 |
5/8" |
5/8" |
20" |
| Cat 1- up to 45 |
3/4" |
7/8" |
26" |
| Cat 2- 40 to 100 |
1" |
1 1/8" |
32" |
| Cat 3- 80 to 225 |
1-1/4" |
1-7/16" |
38" |
| Cat 4- 180 to 400 |
1 3/4" |
2" |
46" |

Drawing A |

Drawing B |
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