Nozzle Gem Core

Nozzle Gem Core is a precision-manufactured nozzle core component made from high-quality artificial sapphire or ruby crystal materials, engineered for extreme precision, fine machining tolerances, and ultra-smooth internal holes. With outer diameters from 0.60 mm to 20.00 mm, inner hole diameters as small as 0.13 mm, and extremely tight tolerances on size, thickness, and surface finish, it provides high-accuracy, low-wear performance when used as a core element in high-precision spray nozzles. Gem cores are ideal for abrasive or demanding spray applications where longevity, corrosion resistance, and dimensional stability are critical.

Categories: Alloy/Gem Nozzles, Spray Nozzles

Since high-quality artificial sapphire/ruby crystal materials have good light transmittance in the 0.20~5.50μm band and the infrared transmittance hardly changes with temperature, optical components and infrared optical windows made of high-quality artificial sapphire are fully used in military night vision infrared equipment, low-temperature laboratory observation ports, and high-precision instruments for navigation, aerospace, etc.

Product specifications

1. Outer diameter D: Ø 0.60~ Ø 20.00mm, the minimum outer diameter tolerance can reach 0.005mm;

2. Thickness H: 0.20~8.00mm, the minimum thickness tolerance is 0.01mm, the parallelism error of the two end faces is not more than 0.02mm, the surface roughness is Rz0.1 (mirror), and the verticality error of the two end faces relative to the inner hole axis is not more than 1°;

3. Inner hole diameter d: Ø 0.13~ Ø 3.00mm, the minimum aperture tolerance can be controlled at 0.004mm, the roundness tolerance and cylindricity tolerance of the inner hole are not greater than the bore diameter tolerance of the bearing;

4. Oil groove: depth h=1/3H, the minimum tolerance can be controlled at 0.04mm, the minimum radius of curvature SR can be controlled at 0.30, and the surface roughness is Rz0.2.