Tractor friction discs, commonly referred to as clutch discs, come in a variety of sizes depending on the make and model of the tractor, as well as the specific application and design of the clutch system. The size of a friction disc is typically determined by its outer diameter, inner diameter, and thickness. These measurements can vary significantly between different tractor manufacturers and models.

To provide a general idea, I can give you a range of possible dimensions for tractor friction discs. Keep in mind that these measurements are approximate and may not cover all possible variations:

Outer Diameter: 6 inches (150 mm) to 14 inches (355 mm) or more.

Inner Diameter (center hole): 1 inch (25 mm) to 2.5 inches (64 mm) or more.

Thickness: 0.25 inches (6 mm) to 1 inch (25 mm) or more.

For more detailed information about the size of the tractor friction disc, which parts constitute the detailed information, please click to visit: