Apparatus for high performance conical crushing

  • US 4,750,681 A
  • Filed: 06/05/1987
  • Issued: 06/14/1988
  • Est. Priority Date: 02/24/1986
  • Status: Expired due to Term
First Claim
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1. A head assembly for a conical crusher capable of transmitting eccentric forces, said head assembly having a normal crushing operational mode and a no-load operational mode, and comprising:

  • a conical head having an exterior surface and an interior surface, said interior surface defining an interior cavity and having an upper spherical bearing surface designed to engage a stationary lower bearing surface having a seat;

    wear resistant mantle means secured to said exterior surface;

    means for receiving said eccentric forces generated by said crusher which impart gyrational motion to said head; and

    a supplemental, annular, load-bearing support projecting from the interior of said head into said cavity and constructed and arranged with an annular vertically oriented face having a low friction wearing surface adapted to engage said bearing seat on a gyrational basis when said crusher is in said no-load operational mode and thus slow the rotation of said head during said no-load operational mode.

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