We have designed a new type of drill sleeve with high precision and long service life. The structure is shown in the figure. The rotation of the drill bit relative to the drill sleeve 3 is changed into the rotation of the drill sleeve 3 and the bearing 2, so that the wear of the drill bit and the drill sleeve 3 is greatly reduced, and the service life is prolonged. Moreover, the gap between the drill bit and the drill sleeve 3 can be appropriately reduced, and the size thereof is ensured that they can slide axially, thereby improving
A Фитинги Hержавеющие
Фитинги нержавеющие
Фитинги нержавеющие
WENZHOU DIYE VALVE&FITTINGS CO.,LTD , https://www.diye-valve.com