Cam follower roller device

Cam follower roller device

  • CN 104,747,336 B
  • Filed: 11/26/2014
  • Issued: 12/29/2020
  • Est. Priority Date: 11/26/2013
  • Status: Active Grant
First Claim
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1. Cam follower roller device comprising a main body (12) defining an outwardly open pocket (12a), a roller (14) mounted in said pocket (12a), and a shaft (16), said shaft (16) being mounted on the main body (12) and comprising an outer seat for mounting said roller for rotation, said roller comprising an inner surface (14a) radially surrounding said seat and mounted rotatable with respect to the shaft, characterized in that the outer seat of said shaft (16) and/or the inner surface (14a) of said roller comprises a plurality of cavities (22) having a ratio of the sum of their surface areas to the outer seat in which they are formed, or to the entire surface area of said inner surface, of between 2% and 40%, said cavities having a depth of between 0.5 μ

  • m and 5 μ

    m, the cam follower roller device further comprising a support body (26) fixed to said main body (12) and bearing on the bottom wall (12b) of said main body, the support body (26) is provided with an open bearing surface (26a, 26b) having a semi-circular profile and supporting an end of the shaft (16) such that the shaft is fully located in an outwardly open recess (12a) of the body.

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