HSD
5801H0056
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88/181
6
USE AND ADJUSTMENT
6.1 ENVIRONMENTAL CONDITIONS
HSD S.p.A. has inspected and checked its products in accordance with standard environmental
conditions (CEI EN 60034-1:2006-05)
Contact HSD S.p.A. for information on the possibility of applications in special environments.
6.2 RUNNING-IN
Before being packed, the product was subjected to an automatic running-in cycle to guarantee the
correct distribution of the lubricant (long-life grease) on the races of the bearings, and to run in the
spheres and races of the bearings themselves. If present, also the reducers and servomotors are
run in, and dynamic tests are carried out on the inner pneumatic and hydraulic circuits.
The running-in cycle also includes a strict inspection of all the command and signalling elements,
simulating various types of operating cycle on the test bench.
6.3 PREHEATING
HSD S.p.A. uses high-precision angular contact bearing pairs, pre-loaded and lubricated for life
with special grease for high speeds.
When the machine is switched on for the first time every day, allow the electrospindle to perform a
brief preheating cycle in order to allow the bearings to gradually attain a uniform operating
temperature, and hence to obtain a uniform expansion of the bearing races and the correct preload
and rigidity.
The following cycle is recommended, without machining operations:
50
% of the maximum rated speed for 2 minutes.
75
% of the maximum rated speed for 2 minutes.
100
% of the maximum rated speed for 1 minute.
The preheating cycle should also be performed every time that the machine is inoperative long
enough for the electrospindle to cool down to room temperature.
Only for HSK versions:
it is forbidden to run the electrospindle without the tool-holder inserted.
While the machine is operating, the spindle can reach high temperatures. Be very careful
not to touch it without due precautions.
6.4 ELECTRIC FAN
In the air-cooled versions, the electrospindle is cooled by an electric fan installed at the rear.
Its rotation is independent of the rotation speed of the spindle shaft: in this way, the cooling
efficiency is better compared with a situation where the fan is integral with the spindle shaft.
The electric fan must always be activated, even when the electrospindle is idle.
