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R188 Ceramic Bearing Ball bearing 1/4″ x 1/2″ x 3/16″

(1 customer review)


R188 ceramic bearing is designed with proprietary specific internal race tolerances for high-speed reliability. open on both sides as shown. This bearing is 3/16″ wide “. This bearing’s overall dimensions are 1/4″ inner diameter, 1/2″ outer diameter, and 3/16” thickness “width.

  • R188 Full Ceramic Bearing for fidget spinner
  • The number of balls:9 Balls
  • R188 full ceramic bearing
  • Dimensions: 1/4″x1/2″x3/16” = 6.35mm x 12.7mm X 4.762mm
  • Cage: PTFE Balls: ZrO2 Ceramic Inner/outer races: ZrO2 Ceramic


R188 ceramic bearing is long-lasting and useful. Limit speed and high bearing capacity. Friction temperature is low, and friction loss is minimal. Corrosion resistance, heat resistance, and insulation are all excellent. Ceramic bearing achieves self-lubricating self-lubrication. Can be used in high-speed, high-temperature, low-temperature, strong corrosion, strong magnetic field, vacuum, and high-pressure applications, as well as other difficult working conditions.

1 review for R188 Ceramic Bearing Ball bearing 1/4″ x 1/2″ x 3/16″

  1. Waggis

    I bought this after seeing a recommendation in a fidget facebook group. My preferred bearings are those that are not too loose, have some whirring noise and tactile feedback, and are easy to spin (not heavy or draggy). This pretty much checks every box. It resembles a goldilocks bearing. It should not be too loud, too quiet, or too loose. Although it is not my favorite bearing in my collection, it is an excellent replacement for bearings that are too boring or too slow. It appeals to me.

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