sealed roller bearing bit

例句：

1. 1.The sealed roller bearing bit is crucial for the smooth operation of the machine.
   密封滚珠轴承零件对于机器的顺畅运行至关重要。
2. 2.The engineer carefully inspected the sealed roller bearing bit before installing it in the machine.
   工程师在安装机器前仔细检查了密封滚珠轴承零件。
3. 3. The sealed roller bearing bit was replaced after a few months of use, ensuring the machine's longevity.
   经过几个月的使用后，密封滚珠轴承零件被更换，确保了机器的耐用性。