There isn’t usually a “rib” on the record player itself, but there can be “ribs” on the turntable mat or on the underside/back of the platter, and that might be what you’re noticing.

Quick Scoop

On many record players, you’ll find:

  • Ribbed or raised rings on the rubber/felt mat
    These shallow ribs or concentric rings help the record make limited contact with the mat, which can reduce vibration, cut static, and sometimes make it easier to lift the record off without it “sticking.” Enthusiasts often say the ribs keep more of the playing surface slightly “floating” rather than fully pressed down.

  • Strengthening ribs on the underside of the platter
    Some metal or plastic platters have ribs molded or machined into the underside or back surface. These structural ribs stiffen the platter and help it resist bending or ringing, which improves speed stability and reduces unwanted resonance.

  • Textured or ribbed areas around the edge
    On certain designs, a ribbed texture around the outside of the platter or housing is just there for grip or style, not for sound.

So if you’re seeing or feeling a rib, it’s not a random extra piece; it’s usually there to either:

  • Support the record more cleverly,
  • Stiffen the platter, or
  • Help you handle different record sizes more easily.

In short, there’s no “universal rib” on all record players, but ribs and ridges are a normal design feature on mats and platters, not a defect or something missing.