The hardening of the sandblasted surface retards the crack nucleation, enhances the resistance to plastic deformation and improves the stress distribution, thus providing the ability to resist to crack propagation.
PREVENTING DETACHMENT OF THE BALL JOINT FROM THE WHEEL KNUCKLE
Ball joints such as CI-BJ-16641 have a large collar above the ball joint thread which the installer must ‘punch’ with a flat chisel. This action locks the collar into a locating notch on the wheel knuckle to prevent detachment.
WHY HARDEN BALL PINS ARE USED WITH CARBON FIBRE BEARINGS?
Vehicle manufacturers sometimes harden ball pins for applications where the ball pin neck can be subjected to very high forces e.g. high speed braking or where the vehicle can be heavily loaded. Hardening increases fatigue resistance and increases durability.
It’s normal for your car to vibrate slightly when you’re driving thanks to the rotation of the crankshaft and other moving parts in your engine. But, when these vibrations feel more like shaking, it’s time to investigate why.
It’s a proven fact that potholes can damage your car – even if you react in time to partially avoid them. And, while some damage is immediately visible, it might take you a while to notice that your car isn’t handling as well as it used to.