Single Row Ball slewing ring bearings（HS series）, for cranes, swivels

The single row four point contact ball slewing ring is composed of two seatrings.It features compact in design,light in weight,the balls contact with the circular raceway at four points,via which the axial force,radial force and resultant moment may be born simultaneously.It may be used for slewing conveyers,welding operating consoles,light,medium duty cranes,excavators and other engineering machines.

HS series pre-engineered, light profile slewing rings feature rectangular cross sections, which allow for alternate hole patterns, improved stiffness, and the potential for more capacity. Ideal for cranes, aerial lifts, digger derricks, chute swivels, lift truck rotators, and industrial turntables.

The HS series share the same pinion, gear, and race core hardness. However, the HS slewing ring features reduced clearance and rectangular sections that provide additional capacity, greater stiffness, and less movement than the RK series. HS slewing ring bearings  range in size from 20" to 47" (500 mm to 1,200 mm) OD with a standard cross section. Configurations include non-geared and internal geared (with fittings on the outer diameter), and external geared (fittings on the inner diameter). The gears are Involute Stub designs with 20° pressure angles, manufactured to AGMA Class Q5 and .015" to .025" allowance for backlash.

HS slewing ring bearings feature two fittings for lubrication, spaced 180° apart. Geared races have tapped holes, while non-geared races have through holes. All have integral seals designed to protect against contamination.

XZWD engineers apply their experience and expertise to create a wide variety of solutions to address the most unique bearing challenges, making XZWD leading supplier of crane bearings.