slewing bearings for Dx800

Supply Types Of Slewing bearings

A slewing bearing or slewing ring (also called a turntable bearing) is a rotational rolling-element bearing that typically supports a heavy but slow-turning or slowly-oscillating loads in combination (axial, radial and moment loads), often a horizontal platform such as a conventional crane, a swing yarder, or the wind-facing platform of a horizontal-axis (yaw) windmill. In other orientations (e.g. a horizontal axis of rotation) they are used in materials handling grapples, forklift attachments, welding turnover jigs and so on.

Compared to a "normal" ball bearing the rings are quite wide and usually have holes drilled in them to provide fixation to a structure. Seals can be provided between the rings to protect the rolling elements. Compared to other rolling-element bearings, slewing bearings are relatively thin section and require that the structure to which they are bolted is stiff enough so that under load predefined limits of distortion are not exceeded.

Slewing rings range in size from as little as 100mm diameter to well over 15 000mm (often segmented at this size for easy transport and handling);Slewing bearings are often made with gear teeth integral with the inner or outer race (or both in rare cases) used to drive the platform relative to the base (for example in winches).

Slewing bearing designs range from single row ball or roller style, through double row ball or roller, triple row roller, combined (1 roller/ 1 ball) or wore guided raceways - each design having its own special characteristics and application. Old designs can have split rings to allow tight control on preload during assembly.

As for other bearings that reciprocate, rather than rotating continuously, lubrication can be difficult. The oil wedge built up in a continuously rotating bearing is disrupted by the stop start motion of slewing. Instead, a hydrostatic bearing with pumped oil flow may be used.

Swing gears handle a lot of stress throughout their life and improper care can lead to replacement needs earlier than usual. Some of the most common reasons for swing gear failures include lack of lubrication, overloading or overworking the machine and outside contamination.

Our swing bearing support specialists have the knowledge and training to understand your excavator needs and can quickly locate your part. We work with top of the line vendors like DYCO and other, that offer quality parts at affordable rates. We also understand that timelines are important and want to ensure you receive your replacement swing gear as quickly as possible. That is why we offer same day shipping for our most popular brands.

Swing ring

Excavator swing bearings handle a forceful load that spreads out combinations of thrust and tilting loads. Regular maintenance is recomended to ensure an efficient performance and to prevent premature failure. Checking the swing gear, pinion gear and all the bearings are standard procedures for excavator and mini excavator fleets. With so much strain on the swing gear, this crucial parts will need to be repaired or replaced over time. PEERS's affordable pricing with fast shipping times, will limit any possible downtime, and get you back up and running with a quality swing gear you can rely on. 

Swing Drive Applications 

• Construction cranes
• Excavators
• Rack drives
• Grapples
• Fire trucks
• Forestry equipment