This brake disc is the friction component that transfers braking torque from the wheel hub to the caliper assembly. It sits inside the final-drive housing, where the caliper pistons clamp against its friction surfaces to slow or stop the rotating hub. The disc is splined to match the hub's drive shaft, ensuring positive engagement without slippage. A worn disc reduces braking force and can cause uneven pad wear or vibration during braking. As an AGCO original component, the friction material and spline geometry are matched to the original caliper and hub specifications, so no shimming or modification is needed during replacement. On installation, ensure the friction surfaces are free of oil or grease, and torque the hub retaining hardware to specification.