IEMCA MASTER 880-VERSO F, Manual For Use And Maintenance

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2 - TECHNICAL INFORMATION MASTER 880/880r VERSO
EN
2 - Pag. 33 / 34
2.6.1 Noise levels
The bar feeder does not cause acoustic noise.
The noise occurs when the lathe, to which the bar feeder is connected, is working and the bar
is rotating into the bar feeder guide channels.
In this case, the noise level depends on the following conditions:
• perfect alignment and levelling of the lathe-bar feeder unit;
• proper fixing to the floor both of the lathe and bar feeder;
• suitable bar gripping device fitted on lathe;
• use of a guide channel and a bar pusher with suitable dimensions as regards to the bar
diameter;
• use of a front guide bush of suitable diameter (if supplied);
• use of bars with a straightness within the set limits (maximum deflection in mm equal to 0.5
‰ of the bar length);
• use of a spindle liner having the same diameter as the bar feeder guide channel diameter;
• spindle rotation speed suitable for the material to be machined;
• as to the bar feeder, use of oil having features suitable for the diameter of the bar to be
machined;
• all bar feeder guards must be closed.
Should the above mentioned conditions be met, the noise level emitted during the bar
rotation into the guide channel, measured in compliance with the international standards,
will be within the following limits:
• brass and steel round bars within 80 dbA
• hexagonal steel bars within 83 dbA
• brass hexagonal bars within 85 dbA