Precision Unit Load and Thrust Bearing.
Ideal choice for continuous or extra demanding service. A replaceable unit bearing carries the direct thrust (main load), while a precision tapered roller bearing counteracts component thrust. In addition, Hamilton's famous integrally forged kingpin-which can't bend, break or come apart-makes this a herculean combination. Series PSD.
Commercial Load and Precision Thrust Bearing.
A set of hardened and polished steel balls rotates in a machined raceway (flame hardening recommended for continuous service). Radial thrust is absorbed by a precision tapered roller bearing. To get the most out of this combination, Hamilton also gives you our unbeatable integrally forged kingpin that is guaranteed for life not to bend or break. Series MD, MDD, EHD, CH, A, ES, FM, HS, WH, 7000, 7200, and 8000 (some models). Heat treated raceways standard on Series MD, MDD and ES, optional at extra cost on all others.
The top plate and inner raceway are formed from one piece, providing a superior raceway for shock conditions. The inner and outer raceways are CNC-machined to ensure a uniform depth in hardness. A sealing cap welded to the outer race assures protection from foreign material and keeps grease in the raceway. Series SEC and Series EC.
Double Ball Race.
Two sets of hardened and polished steel balls rotate in machined or pressure-coined raceways. The upper raceway absorbs direct thrust, while the lower raceway surrounds the kingpin to absorb side forces (component thrust). Raceways are hardened as required by the load ratings, and kingpins may be of the bolt or rivet type. Series MS, GS, 52, WW , HL, 300, 5000, 4000, STA, STL, TG, and TX.