Insufficient lubricating oil may cause the mechanism to jam for the following reasons

1. Long-term shutdown (including transportation), the amount of oil in the nose is insufficient, resulting in instant oil shortage, resulting in stuck, so the equipment for long-term shutdown should first add sufficient amount of oil to the nose and restart the machine;

2. Insufficient oil supply, including the replacement or addition of lubricating oil in time, or oil blockage, leakage, resulting in lack of oil stuck nose;