Geared Slewing Ring FAQS

QWhat is Four-point contact bearings?

AFour-point contact bearings are single-row angular contact ball bearings and therefore require significantly less space in an axial direction than double-row designs. The bearings comprise solid outer rings, split inner rings and ball and cage assemblies with brass or polyamide cages. The two-piece inner rings enable a large complement of balls to be accommodated. The inner ring halves are matched to the particular bearing and must not be interchanged with those of other bearings of the same size. The outer ring with the ball and cage assembly can be mounted separately from the two inner ring halves

QWhat is slewing bearing?

AA slewing bearing or slew[ing] ring is a rotational rolling-element bearing that typically supports a heavy but slow-turning or slow-oscillating load, often a horizontal platform such as a conventional crane, a swing yarder, or the wind-facing platform of a horizontal-axis windmill. (To "slew" means to turn without change of place.)

QHow to solve the dust and sound of the slewing bearing?

AHow to solve the dust and sound of the slewing bearing: (1) Control method of dust sound There are dust and other foreign matter in the rotating branch, and non-initialized vibration occurs. The so-called dust sound has varying vibration and noise, and may or may not be. Control method of dust sound: Improve the cleaning method of slewing bearing/slewing bearing, completely clean the bearing, shaft, seat hole and matching parts before installation; remove internal foreign matter; improve bearing sealing; avoid material impure or embedded Plastic cage with foreign objects. (2) Control method of scar sound If there are cracks, indentations or rust on the rolling surface of the rotating support, vibrations and noises like the wound seams will occur, and the period may be fixed but most of them correspond to the distortion. The wound is full. It will occur continuously, and the scar will appear on the steel ball, and the noise will change with the installation and lubrication conditions.

QHow many kinds of slewing bearing cage?

AThe slewing bearing cage has a structural form such as an integral type, a segmented type, and an isolated block type. The integral and segmented cages are made of 20 gauge steel or ZL102 cast aluminum alloy. The spacer block is made of polyamide 1010 resin, ZL102 cast aluminum alloy, and the like. In recent years, with the continuous development of the material industry, nylon GRPA66.25 has also been promoted and applied in the design of segmented cages.