China processing ball screw linear bearing supplier
- PRODUCT DETAIL
The nut pair is usually sealed with a felt ring, and the thickness of the felt ring is 2 to 3 times the pitch. Moreover, the inner hole is formed in the shape of a thread so as to tightly enclose the lead screw and fit into the slot at both ends of the nut or the sleeve. In addition to soft felt, the seal can also be made of oil-resistant rubber or nylon. Since the sealing ring and the lead screw are in direct contact, the dustproof effect is good, but the frictional resistance torque of the ball screw nut pair is also increased. In order to avoid such a frictional resistance torque, a non-contact labyrinth seal made of a harder plastic may be used, and the inner hole is formed in a shape opposite to the screw thread raceway with a certain gap.
For the lead screw exposed to the outside. Generally, a spiral girder, a telescopic sleeve, a tapered sleeve, and a protective cover in the form of a folded plastic or artificial leather are used to prevent dust and abrasive particles from adhering to the surface of the lead screw. Similar to the shields of the guide rails, these ones are attached to the end faces of the ball nuts at one end and to the support seats of the ball screws at the other end. This will be even stronger.
- For the outer wheel separation type and the inner wheel rotation.
- For use where it is necessary to rotate the inner wheel.