Nsk nakanishi inc, japan, offers super precision high speed jig grinding units, marketed by worldwide industrial distributors. Simply by attaching a standard borin head with the planet series, any milling machine can be converted into a jig grinding machine. This series is also easily able to convert any lathe into a high precision internal grinding machine. An energy saving construction with small sized compressor [minimum 1/2, maximum 2 hp], made in pursuit of absolute quietness provide, noiseless operation through the exhaust air silencer system. Planet air system is a mechanism, which allows smooth operation of high speed grinder for prolonged period of time. Stable air regulation and unrestricted adjustment of revolution speed are given by the regulator, directly connected to the compressor. The air filter performs filtering. The switch enables on/off operation.