Bielomatik has further refined the design of its two-channel MQL (minimal quantity lubrication) system with the introduction of a new quick valve that controls precisely the temperature of the oil arriving at the cutting point. By heating the oil to a constant, known temperature Bielomatik has removed one of the process variables, making the whole process more robust. The Bielomatik two-channel system delivers pressurised oil and proportionally controlled air separately to a Bielomatik rotary transmission unit. A specially designed quick valve mounted to the rotary transmission controls the exact amount of lubricant required. This quick valve is equipped with heaters and feedback sensors for accurately controlling the oil temperature. Air and oil remain separate streams until immediately prior to discharge to the cutting tip, where they mix to produce a precisely controlled fine oil/air mix.