Kaydon Corp. Bearings Division now stocks many models of its space-saving HS Series slewing ring bearings, units capable of handling moment loads to 139,900 ft-lbs. This is about twice the capacity of the widely used Kaydon RK Series bearings, and in the same envelope.
The considerable load and thrust with significant space savings makes Kaydon HS Series bearings ideal for a wide range of medium-duty to heavy-duty applications, such as cranes and aerial lifts.
HS Series slewing ring bearings are designed for four-point contact, with a rectangular cross-section, deep groove gothic-arch raceways, and maximum ball complement. This produces higher thrust and load capacities than the Kaydon RK Series, whose “L” cross-section saves weight while providing a flange for mounting. The HS Series has less internal diametrical clearance than the RK, and therefore greater stiffness. The two series also have several features in common: the same pinion, an identical gear, and equal race core hardness.
HS Series slewing ring bearings come in O.D.s from 20 to 47 in. (500 to 1,200 mm). Configurations include internal geared, external geared and non-geared. The gears are involute stub designs with 20° pressure angles, manufactured to AGMA Class Q5. All HS models feature two fittings for lubrication and integral seals to protect against contamination. Geared races have tapped holes, while non-geared races have through holes.
Kaydon Corp. Bearing Div.