Arrangement for supporting of an axial bearing of a drilling machine

  • US 4,846,289 A
  • Filed: 04/21/1987
  • Issued: 07/11/1989
  • Est. Priority Date: 05/09/1986
  • Status: Expired due to Term
First Claim
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1. An arrangement for supporting an axial bearing of a drilling machine comprising:

  • a body supported by a carriage by a first supporting means,a percussion means mounted in the body and a rotation means positioned on an axial extension of the percussion means for rotation of a shank, andan axial bearing arranged in the body in an abutting relationship with said rotation means so that the axial forces acting the rotation means through said shank are directly transferred from the rotation means to the axial bearing, and wherein the axial bearing is supported directly on the carriage in the axial direction, by a second supporting means separate from said first supporting means that supports the body radially, so that the axial forces received by the axial bearing are transferred to the carriage.

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