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Valve seat & guide machine
Valve seat & guide machine
Van Norman Machine (India) offers a cylinder-head valve-seat and guide machine, Model 044. These are mainly used for precisely machining intake and exhaust valve. With newly developed tooling available, it is now possible to machine all three angles of valve seats simultaneously. Valve seat to guide concentricity is controlled within 0.015 mm, which by far exceeds OEM requirements. Surface finish and accurate machining of valve seat angles using this system eliminates post-lapping of valve seats with corresponding valves which has been a usual practice in the industries so far. Even at OEM levels lapping compound used impregnates into seat ring surface and disrupts the flow of heat from the valve, thereby running dangerously hot and eventually leading to pre-mature cylinder head failure. Also this system offers "Dead Pilot" design, which contributes to much higher degree of accuracy and concentricity between valve seat and guide if compared to live pilot- designs.