No. There are no grease fitting on the link you have shown. They are lubricated for life. Now, what is the life of a link that cannot be lubricated? Not sure how that would be answered.
There are links made with grease fittings that you should lube at every oil change, which will extend the life of these links. But they should last 50k-60k miles easily with the grease free ones.
There are links made with grease fittings that you should lube at every oil change, which will extend the life of these links. But they should last 50k-60k miles easily with the grease free ones.