GB
2 - TECHNICAL INFORMATION
MASTER 880MP E-volution
2 - Pag. 18 / 19
2.6.1
Noise levels
Bar feeder does not cause acoustic noise.
Noise occurs when lathe, connected to the bar feeder, is working and the bar is rotating into
bar feeder guides.
In such a case, noise level emitted depends on the following conditions:
• perfect alignment and levelling of the lathe-bar feeder unit;
• proper fastening to the floor both of lathe and bar feeder;
• suitable bar gripping device fitted on lathe;
• dimensions of guide channel and bar-pusher suited to the bar stock;
• front guide bush of suitable diameter (if supplied);
• bar with a straightness within prescribed limits (max. arrows equal to 0.5 ‰
mm of the bar
length);
• 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 panels must be closed.
Should the above mentioned conditions be met, the noise level emitted during 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
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