Product Description
Excavator slewing bearing mainly uses a sealing strip, which is bonded into a circle after scraping. On the one hand, it is to prevent the leaked grease from leaking out, and on the other hand, it is to prevent the dust, impurities and water from entering the inside of the track and pollute the oil and affect its normal operation. In addition, most of the slewing bearings work at heavy loads and low speeds, and the seals are exposed to the outside.

The sealing type of the slewing bearing adopts a rubber seal single seal and a labyrinth seal. The rubber sealing strip seal itself has the advantages of simple structure, small space occupation, reliable sealing performance, etc., and has been widely used, but its disadvantage is that it is exposed outside, and the rubber sealing lip is easy to aging early and lose the seal when it is in a high temperature environment. In order to solve this problem, the slewing bearing working under high temperature conditions should adopt a labyrinth seal, so that the outer sealing strip loses the sealing effect even if it is prematurely aged. Due to the multi-layer sealing, the slewing bearing has a good seal to ensure the support. The normal work.