<p>Slip Clutch, 1 3/8&quot; PTO Slip Clutch, Smooth Round End PTO Friction Clutch, Carbon Steel Tractor Slip Clutch, Adjustable Rotary Cutter Slip Clutch, </p><p> </p><br/><p>Premium PTO Slip Clutch: The tractor PTO slip clutch adopts advanced 20CrMnTi carburized steel, which has high durability and impact resistance. The surface is blackened and smooth, fatigue-resistant. Therefore, it can withstand higher torque and speed for better protection of your PTO shaft. 1 3/8&quot; 6-spline shaft end: Constructed on the spline end, this 6-spline PTO clutch is 1 3/8&quot; in size, suitable for both male and female ends. It fits the PTO slip shaft, perfectly matches the tool input shaft and tractor output shaft of the same diameter, and has the superior safety function of shear bolts. Adjustable torque setting: Rated torque 900Nm, adjustment range: 20-55HP, you can adjust the total length of the tension spring to set the appropriate torque for your rotary tool slip clutch. Just tighten/loosen the 8 nuts 1/4 turn according to the instructions and check their tightness to ensure correct operation. Replaceable friction plate: The PTO friction clutch adopts a basic spring and disc setting, and is equipped with a dummy disc inside to help transmit force, allowing the two sides of the PTO shaft to rotate at different speeds. Considering long-term use, we provide two extra discs for you to replace. Wide range of applications: Adding a slip clutch to the PTO is for protection. It acts as an extra safety line with the PTO driven machinery on your tractor to prevent further damage to the moving line, most commonly used by rotary tillage attachments such as rotary cutters, brush cutters, and rotary mowers, tractors.</p><p></p>