HSD
5801H0056 _______________________________________________________________ 90/181
6.6.1 Installation of the tie-rod HSD 0804H0009 in the cone ISO30 DIN69871
• Carefully clean the tie-rod and the tie-rod housing in the cone ISO30.
• Cover the thread of the tie-rod with high resistance, thread-blocking liquid (LOCTITE 270 or
another equivalent product).
• Tighten the tie-rod to the cone with a torque of 62 Nm.
• Leave the cone to rest, to allow the thread-blocking liquid to adhere (12 hours with LOCTITE
270, or depending on the manufacturer's indications if using an alternative, equivalent thread-
blocker).
The use of non-original HSD tie-rods, or incorrect installation, may cause the tool-holder
cone to fly off.
It is forbidden to use ISO or HSK tool-holders not conforming to the conditions described
above; failure to observe these instructions represents a source of risk of breakage or
incorrect hook-up of the tool-holder cone, with serious risks for the user.
6.6.2 General recommendations for the tool-holder cones
IMPORTANT:
• The choice of tool-holder is a determining factor for safety purposes.
• The conical surfaces of the tool-holder and its housing on the spindle shaft must be kept
thoroughly clean in order to permit secure hooking-up (see section 7 "Scheduled maintenance"
).
• During machining operations, be sure to avoid any contact between the non-cutting rotating
parts and the piece being machined.
• The seat of the tool-holder cone must always be protected against any impurity that may come
in: use a closing device or a tool-holder cone.
• At the end of the working day, always remove the tool-holder cone from the electrospindle, to
avoid any problem of it sticking. Replace it with a clean tool-holder cone at room temperature,
to protect the inside of the electrospindle from the outer environment.
• Only for HSK versions: do not set the electrospindle in rotation without the tool-holder installed.
This would compromise the balancing and working of the collet.
6.7 TOOL
The tools must have a degree of dynamic balancing of G = 2.5 or better (standard ISO1940) at the
maximum rated speed of the electrospindle.
When selecting the tool, it is essential to pay attention to the following recommendations:
• Always use properly sharpened tools, locking them correctly in the respective tool-holder.
• Never use deformed or damaged tools, tools with missing parts or tools that are not perfectly
balanced.
• Before inserting the tool in the respective collet, always check that all the surfaces are free
from damage and thoroughly cleaned.
• The essential requirements for using a tool at high speed are:
- a compact, short, lightweight tool
- precise, and with any inserts blocked with a high degree of safety
- balanced and coupled symmetrically with the tool-holder
- with bits near the rotation axis
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