Slewing ring bearings consist of a combination of stainless steel balls with polymer inner and outer rings that enables dry operation with low coefficients of friction. The xiros® swivel ring bearing can be used at temperatures up to 80 °C.
Lubricant- and maintenance-free
Light
Corrossion-resistant
Washable
Low-priced
Electrically insulating
Explanation and technical information here:
a) with 3D printed plates:
b) with aluminium plates: