We are manufacturer of solid ball valve, ball valves, gate valves, industrial ball valves, single pipe ball valve, polypropylene flanged ball valve, air valves, bolt nut foot valve, threaded foot valve, bore foot valve, etc.

The Needle Roller Bearing is NRB’s flagship product, cylindrical roller bearings, spherical roller bearings, wide inner ring bearings, tapered roller bearings and ball bearings.

Metalized sapphire windows are created by applying thin layers of chrome, nickel and gold around the edge of a sapphire window. This metalized edge creates a surface that can be soldered or bonded directly into your opto-mechanical assembly allowing you to create a hermetic seal. Hermetically sealed optics is used in a variety of applications ranging from infrared imaging systems to medical devices. Technical capability Material: optical sapphire (Al2O3) Diameter tolerance: +0, -0.1mm Thickness tolerance: +/-0.05mm Clear aperture: 90% Surface quality: 80-50 scratches and digs Surface accuracy: 2 lambdas per 25.4mm @ 632.8nm Parallelism: < 3 minutes Coating: AR coating, T > 98% @ 1260-1600nm Metalizing: Chrome, Nickel, and Gold; sputtering method or screen printing method

The Needle Roller Bearing is NRBs flagship product, cylindrical roller bearings, spherical roller bearings, wide inner ring bearings, tapered roller bearings and ball bearings.