Toplink Cat 1 20" Tube is a high quality, zinc plated, economy Toplink with a thread of 1⅛ UNC in a 20" Centre tube. It goes from a minimum Length of 24⅜" to a maximum of 33". It is designed to be used with a tractor linkage system. You should know the length of toplink you will require for each implement on your farm and use one to suit.
Why use The Toplink Cat 1 20" Tube
The toplink is the topmost arm of the 3 point linkage system. Turning the centre tube clockwise or anti-clockwise (with the tommy bar provided) extends or shortens the length of the toplink. This in turn levels the attached implement with the ground surface. The attachment of a new implement to the tractor may require the use of shorter or longer toplink.
TIP: Keeping the correct length toplink with each implement eliminates the need to reset the correct position each time you change implements.
| Category | Tractor HP | Top Link Pin Diameter* | Lift Arm Pin Diameter |
|---|---|---|---|
| 0 | Up to 20 | 5⁄8 in | 5⁄8 in |
| 1 | 20 to 45 | 3⁄4 in | 7⁄8 in |
| 2 | 40 to 100 | 1 in | 1⅛ in |
| 3 | 80 to 225 | 1¼ in | 1 7⁄16 in |
| 4 | 180 + | 1 3⁄4 in | 2 in |
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