Cup Jewel Bearing for vertical shaft applications
  • Extremely hard, strong and wear resistant
  • Excellent thermal conductivity/heat resistance
  • Exceptionalchemical stability
  • Excellent transmission bandwidths (UV to IR)
  • Spherical, conical, single-sided double spherical, double- sided single spherical
  • According to the classification of oil grooves, Cup jewel bearings can be divided into spherical cup jewel bearing, conical cup jewel bearing, single cup jewel bearing and double cups jewel bearing.

    HYT Sapphire Optics offers high quality cup jewel bearings plays a supporting role in the spherical surface of electrical measuring instruments, thermal measuring instruments,hydraulic measuring instruments, single-phase and three-phase electroplating meters, aviation and marine instruments, meteorological instruments and other instrument moving systems.

    Common Types of Cup Jewel Bearing


    Double cups jewel bearing


    Double cups jewel bearing


    Conical cup jewel bearing


    Single cup jewel bearing

    Specifications of Cup Jewel Bearing

    Material Sapphire (Al2O3)
    Outer Dia. Φ0.80 ~Φ10.00mm
    Height(H) 0.60 ~ 5.00mm
    Cup depth(h) 0.20 ~ 0.80mm
    The radius of curvature(SR) 0.60 ~ 5.00mm
    Taper groove depth 0.20 ~ 0.60mm
    Conical groove taper 60°~ 120°
    The bottom of the cone groove(SR) 0.15 ~ 25


  • Specific specifications, dimensions and technical requirements can be processed according to client' s drawings or design by our company.
  • Please Contact HYT Sapphire Opitcs( for other dimensions in prototype and production quantities.
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    HYT Sapphire Optics focused on the precision manufacturing of high-quality sapphire components, and strived to create sapphire optical windows, fine holes, rods, balls, tubes and other automated, intelligent products and chemical production line.