Three point hitch: Difference between revisions
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A three point hitch (or 3 point hitch) is used on tractors to attach various implements to the back. |
A three point hitch (or 3 point hitch) is used on tractors to attach various implements to the back. |
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Revision as of 15:49, 16 June 2008
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A three point hitch (or 3 point hitch) is used on tractors to attach various implements to the back.
They are separated into categories dependent on the load/forces put on them by the tractor - a heavier, more powerful tractor will have a stronger 3 point hitch. Category 0 is very light duty. Category 1 is for small compact utility tractors (CUTs) with horsepower up to 60hp. Category 2 applies from __ to __ hp, with Category 3 above that.
Three point hitches are so called because they attach an implement to a tractor by 3 points in a triangle - 2 bottom lift arms, usually with hydraulic life, and a top link, which adjusts the implements angle of attack.
The geometry of the 3 point hitch changes by category, with certain standards promulgated. Unfortunately, it is not unusual for manufacturers to manufacture implements which vary noticeably from the standards.
There have been many tweaks to 3 point hitch design, including hydraulic top arms and side arm (commonly referred to as TopnTilt), telescoping side arms, and variations on turnbuckle assemblies.