Single-row interspersed roller slewing ring (HJ series)-external gear

Structural features, functions, scope of application

Single-row interspersed roller slewing ring, composed of two seat rings, compact structure, light weight, high manufacturing accuracy, small installation clearance, high requirements for installation accuracy, rollers are arranged in a 1:1 interspersed arrangement, which can bear the axial direction together Force, tipping moment and large radial force are widely used in lifting and transportation, construction machinery and military products. There are foreign objects such as dust in the slewing branch, and non-periodic oscillations will occur. The so-called dust sound, the magnitude of the oscillation and noise is variable, and there may or may not be.

Dust sound control method: improve the cleaning method of the slewing ring/turntable bearing, clean the bearing, shaft, seat hole and common parts before installation; remove foreign matter in the lubricant; improve the seal of the bearing; prevent impure use of data Or a plastic cage embedded with foreign objects.

Because most of the slewing ring bearings work under heavy load and low speed, the sealing type of the bearing selects two structures: rubber seal ring seal and labyrinth seal. The rubber seal ring seal itself has a simple structure. It is widely used because of its advantages such as small space occupation and reliable sealing performance. However, its shortcoming is that the rubber sealing lip is easy to age at high temperature and lose its sealing performance. Therefore, the slewing bearing that works under high temperature conditions is suitable Use labyrinth seal.