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igus® Slewing Ring Ball Bearings: Precision, Durability, and Maintenance-Free Operation

Slewing ring ball bearings, also known as turnable bearings, are a specific type of large bearing designed to handle simultaneous axial and radial forces. These bearings differ from traditional ball bearings as they are not housed within a casing or mounted on a shaft. Instead, they feature mounting holes on both the inner and outer rings, facilitating efficient power transmission and swift integration with adjacent components. Typically, these bearings are stacked during assembly, although vertical installation is also feasible. The rolling elements within metal slewing ring ball bearings are spaced apart and travel along a raceway that is both sealed and lubricated. igus a company in this field, provides two distinct types of 100% lubrication-free slewing ring ball bearings. One type operates on low-maintenance sliding elements, while the other is supported by ball bearings. These can be further customized with options such as outer drive teeth, inner drive teeth, or specialized parts tailored to specific requirements.

iglidur PRT slewing ring ball bearing supported by plain bearings

iglidur® PRT slewing ring ball bearing

100% lubrication-free
Very slim design
Ready-to-install & easy to assemble
Resistant to dirt, dust, corrosion and humidity
Individually configurable

xiros slewing ring ball bearing supported by ball bearings

xiros® slewing ring ball bearing

100% lubrication-free
Available as a completely metal-free version
Ideal for the food and chemical industries
FDA-compliant components

Our slewing ring ball bearings in use

Assembly table with PRT slewing ring bearing

Assembly table with iglidur PRT-01 slewing ring bearing

"We were looking for a simple slewing ring bearing that would allow our assembly table to rotate. Using the maintenance-free PRT slewing ring bearings was therefore very helpful, and the cooperation with igus went very well."
Maciej Banaś, GBK Projektowanie i Budowa Maszyn

More on the application

EasyCure heating cable drum from Bodenbender GmbH

Heating cable drum with xirodur B180 slewing ring ball bearing

"The xiros slewing ring ball bearings impressed us due to their lack of lubrication, smooth running and low weight of the plastic. The individual design options for the products were also very helpful during the development process."
Jonas Bodenbender, CEO Bodenbender GmbH

More on the application

Our new products in the area of slewing ring ball bearings

PRT-04-100 for cleanroom applications

PRT-04-100 for cleanroom applications

The specially developed sliding elements of the PRT-04-100 are made of iglidur® J, an especially abrasion-resistant polymer that is optimised for use in plain bearings. These sliding elements minimise particle emissions, so they can be used in cleanroom applications.

PRT-04 black edition with dry operating sliding elements

PRT-04 black edition with dry operating sliding elements

Elegant and yet inconspicuous appearance. Ideal for use
as a visible part in furniture or in applications where reflection
should be avoided as far as possible.

Replacement kits for PRT slewing ring bearings sliding elements in four materials

Replacement kits for PRT slewing ring bearings sliding elements in four materials

The PRT Sliding Element Replacement KIT for the PRT-01 and PRT-04 series allows you to replace worn sliding elements with new ones. Extend the service life of your PRT slewing ring bearings and protect the environment.

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