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  • Bronze and Copper-Alloy Bearings
    Dozens of copper alloys are available as bearing materials. Most of these can be grouped into five classes: copper lead, copper tin (sometimes called tin bronze), leaded bronze, aluminum bronze, and beryllium copper. As a general rule in these alloys, a higher lead content promotes compatibility
  • Powder metalstake on new shapes
    prize went to Ceromet Div., Metal Powder Products Co., Anaheim, Calif., for a P/M bronze inertial active shock absorber valve. The valves have a radial crushing strength range of 39,750 to 41,950 psi and critical tolerances on the inside diameter of +- 0.0005 in. The castle height of 0.010 +- 0.001
  • PM Brings Satellite TV to RVs
    functional and cost saving. "Iron powder is about $0.80/lb while bronze is closer to $5/lb. The iron retaining plate provides good structural support and keeps costs down, while the self-lubricating bronze bearing lets the gear rotate freely. " The Trav'ler antenna measures only 10 in. high when its
  • Bearings That Lube for Less
    , the radial crush force that can break or flatten a bearing. The Metal Powder Industries Federation (MPIF), an industrial association responsible for powder-metalbearing standards across the industry, requires that selflubricating sintered-bronze bearings have a K-value of at least 26,000 psi of force
  • Porous-Metal Bearings
    motions where it is hard to build up an oil film. Powder producers can control powder characteristics such as purity, hydrogen loss, particle size and distribution, and particle shape. Each of these properties in some ways affects performance. In the bronze system, for example, shrinkage increases

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