RKS.061 Series with external gear teeth

RKS.061 Series with external gear teeth

RKS.061 Series with external gear teeth

The RKS.061 series is a medium-sized, single-row four-point contact ball slewing bearing with an external gear on the outer ring. It is designed to handle combined loads – axial, radial, and tilting moment – simultaneously in a compact configuration.


Typical Applications:

Mobile cranes and lifting platforms-

Construction and handling equipment

Excavators and aerial work platforms


  • RKS.061 Series with external gear teeth
  • RKS.061 Series with external gear teeth
  • RKS.061 Series with external gear teeth
InquiryDesignationBrandMain DimensionsFixing HolesGear TeethTooth ForceMass (KGS)Fig N°Basic Load Rating Curves
De (mm)Dm (mm)Di(mm)Fe (mm)he (mm)Ne Fi (mm)hi (mm)NiD (mm)mzNorm. Tooth (kN)Max.Tooth Force (kN)axial dyn.C(kN)Axial Stat.Co (kN)Raceway s (r)Bolt (b)

The RKS.061 series is a single-row, four-point contact ball slewing bearing featuring an external gear on the outer ring. This series is designed for light to medium-duty applications where space is limited, yet the bearing must handle complex load combinations with reliable performance.

Design Features

The bearing consists of an inner ring, an outer ring with external teeth, and a single row of steel balls. The raceways are profiled so that each ball contacts the raceways at four distinct points. This four-point contact geometry enables the bearing to simultaneously support axial loads (in both directions), radial loads, and tilting moments – all within a single, compact row of rolling elements.

The external gear is integrally machined on the outer ring, allowing direct pinion drive coupling. This simplifies the transmission system, reduces component count, and facilitates a more compact overall design. Both rings are provided with mounting holes for easy bolted installation.

Performance Highlights

  • Combined load capability: Handles axial, radial, and moment loads simultaneously

  • Compact cross-section: Single-row design saves space and reduces weight

  • Smooth rotation: Optimized raceway geometry ensures low friction and steady operation

  • Easy integration: External gear and mounting holes simplify system assembly



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