single row four-point contact ball slewing bearings light series single row four-point contact ball slewing bearings have a thin and fixed cross section, irrespective of the inner or outer diameter. The inner and outer rings have a standardized number of equally spaced holes for attachment bolts, to simplify installation.
The light series single row four-point contact ball slewing bearings (fig. 1) listed in the product tables include bearings with a mean raceway diameter ranging from 411 to 1091 mm and are available with any of the following gear configurations:
• an external gear (a), RKS.21 series designation
• an internal gear (b), RKS.22 series designation
• without a gear (c), RKS.23 series designation
These lightweight general-purpose slewing bearings provide a cost-effective solution for light to medium-duty arrangements, which do not require high precision. Examples include: aerial work platforms, robotics, industrial positioners, turntables and some material handling equipment. Light series single row four-point contact ball slewing bearings can be operated at circumferential speeds up to 2 m/s.