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High uptime on numerical control (N/C) machining centers is the result of correcting any condition that may ultimately lead to some component failure. This requires an intimate knowledge of the machine hydraulic system and components, and that rare sense of what is right (or wrong) in the entire operation of a machine. A measurement of oil cleanliness can be most helpful.
A remarkable increase of N/C machines in manufacturing industries presents a challenge to develop personnel for proper care of these installations. Development of this skill in machine maintenance is the users' achievement.
Present day machines, with improved components and hydraulic systems, are less sensitive to hydraulic problems. Several years of experience has provided technical knowledge in the art. This information can be passed on by a machine builder to a user, or from one user to another, in symposiums such as this.
failure, clean oil, contaminants, filters, lubrication, manuals, oil tests, oil coolers, particle size, numerical control, machine tools, hydraulic systems, servomechanisms, maintenance, cleaning, preventive maintenance, temperature control, education, varnishes, evaluation
Arndt, O. H.
Senior mechanical engineer, Kearney and Trecker Corporation, Milwaukee, Wis