Medium-size single row four-point contact ball slewing bearings have a strong, full-size gearless ring. Depending on their size, they are available with two different fixed cross-sections within the series. The inner and outer rings have a standardized number of equally spaced holes for attachment bolts, to simplify installation.
QIBR medium size single row four-point contact ball slewing bearings feature a unique combination of load-carrying ability and speed capability and provide a cost-effective solution for light to medium-duty arrangements that do not require high precision. Typical applications include, but are not limited to, tower cranes, mobile cranes, lifting platforms and construction or material handling equipment.
The QIBR medium size single row four-point contact ball slewing bearings with a mean raceway diameter ranging from 414 to 1904 mm and are available with any of the following gear configurations:
• an external gear QRKS.061 series
• an internal gear QRKS.062 series
• without a gear QRKS.060 series