Major Selection Criteria: Bearing Properties
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This toothed wheel consists of two parts which are assembled with cast-in spigots and bolts in special steel. The parts are made in zinc alloy ZA-27, and apart from trimming, receive no machining or other finishing operations. The part is produced in two sizes, the...
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Die casting the three components in ZA-27 alloy offers attractive aesthetics and a near-net shape, which eliminates machining costs. In addition, ZA-27 alloy provides good wear and bearing characteristics.
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Zinc’s excellent bearing properties at high loads and low speeds permitted it to be used for this part without the use of pressed-in bronze bearings, reducing cost. The required dimensional precision and high required strengths also made zinc die casting the preferred...
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The Champion Series IV grader incorporates ZA-12 alloy low-speed, high load bearing to improve operation performance. This Front Axle Bearing application acts as a replacement for the grader’s front axle needle bearings. The original needle bearings performed well...
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Originally, the housing and base plate frame were sand cast aluminium and finish machined. Machining and assembly time took 3.5 hours per unit. During a redesign, the company set about to reduce costs without sacrificing quality or performance. This led to graphite...
