needle roller bearing without inner ring

例句：

1. 1. The new machine has a needleroller bearing without inner ring, which greatlyimproves its performance.
   这台新机器有一个无内圈的针式滚珠轴承，极大地提高了其性能。
2. 2. The engineerdesigned the new part with a needle rollerbearing without inner ring to reduce friction andincrease efficiency.
   工程师设计了新的部件，使用了无内圈的针式滚珠轴承来减少摩擦并提高效率。
3. 3. The technicianreplaced the old bearing with a needle rollerbearing without inner ring, which significantly improvedthe machine's stability.
   技师用一个无内圈的针式滚珠轴承替换了旧的轴承，这显著提高了机器的稳定性。