HSD ES327 - Glossary

1 Preliminary Information
HSD S.p.A. © - 0101h03a.fm100713
13
1.6 Glossary
ISO Tool holder cone locking
system as described in
standard DIN 69871.
A plate similar to that shown
alongside is fixed to the
electrospindle to indicate the
type of locking system.
CONE ISO DIN 69871 SCREW
DOWEL
ISO30 HSD or
BT30
In spindles ES331 the position of dragging tenons differs from
the norm DIN 69871.
HSK Tool holder cone connection system, described in
standard DIN 69893.
The electrospindle carries a plate similar to the
one shown alongside, indicating the type of
connection.
HSK - DIN 69893 CONE
Dynamic
balance quality
grade
The balance quality of a rotating object according to standard ISO 1940/1,
indicated by the letter G. Low G values indicate better balancing. G=0.4
indicates maximum balancing precision. G assumes discrete values in
multiples of 2.5 (G=0.4 G=1 G=2.5 …).
Rated voltage Maximum power supply voltage.
Rated frequency Minimum frequency at which the maximum power supply voltage is provided.
Rated
characteristics
The set of nominal values reached at rated frequency.
Service type S1 Operation at constant load with a duration sufficient to ensure that the motor
reaches thermal equilibrium.
Abbreviated to S1.
(Standard CEI EN 60034-1)
Service type S6 A sequence of identical operating cycles, each consisting of a period of
operation at constant load and a period of operation with no load, with
constant rpm and without any intermediate rest times.
Abbreviated to S6, followed by the percentage ratio between the period of
operation under load and the duration of one cycle.
For example: S6 40%
(40% operating time under load, 60% operating time without load)
(standard CEI EN 60034-1)