COMINTEC
45
DSS/SG/RF - torque limiter free rota
Ɵ
on: introduc
Ɵ
on
This model of torque limiter nega
Ɵ
ve version to incorporate the following features:
Backlash free with compact dimensions
Instantaneous reduc
Ɵ
on of the couple at the
Ɵ
me of overloading
Absence of residual torque, a
Ō
er disengagement
Immediate response
Ɵ
mes and high sensi
Ɵ
vity
Suitable for protec
Ɵ
ng against overloads within automa
Ɵ
c machines with signi
fi
cant
powers and iner
Ɵ
as and high rota
Ɵ
on speeds. When an overload occurs an
immediate and complete separa
Ɵ
on of the drive and driven occurs and will remain
disconnected in free rota
Ɵ
on un
Ɵ
l it is re-engaged manually or using a suitable tool.
A possible micro switch or sensor detects the movement of the movable base by
genera
Ɵ
ng an electrical signal necessary to stop the transmission. This electrical
signal can also be used for further control func
Ɵ
ons.
Electromechanical microswitches model EM1 or EM2 or induc
Ɵ
ve sensors model
PRX, available from Comintec.
Adjustment of the Nega
Ɵ
ve version is opposite to all other units in our range.
Unlike the tradi
Ɵ
onal units, by rota
Ɵ
ng the adjuster nut clockwise the
disengagement torque will reduce, and therefore to increase the torque the nut
must be rotated an
Ɵ
-clockwise. To assist the operator in se
ƫ
ng, there are clear
markings on the nut showing 75% of the max torque and +/- Min/Max direc
Ɵ
ons
indicated.
Unless otherwise requested, these models are supplied pre-calibrated at 75% of
the maximum torque value of the spring’s chosen con
fi
gura
Ɵ
on.
Hub
Nut
Driven part
Driving part
stroke
Engaged
Disengaged
OPERATION
TORQUE ADJUSTMENT
HOW TO USE AND ASSEMBLE
MAINTENANCE
The device is supplied ONLY with
fi
nished bore in the hub, unless otherwise speci
fi
ed, with tolerance H7 and keyway according to UNI 6604
(DIN 6885-1) with tolerance H9, H7 tolerance or without keyway with integrated locking assembly.
The device can be
fi
xed axially by a screw and washer for the version with hole and keyway or by the locking device integrated in the version
without key. They can be used, on request, also conical rings. The device is NOT self-suppor
Ɵ
ng so it is necessary to provide that the sho
Ō
s
on which it will be
fi
Ʃ
ed are with bearings and are supported in the case of the applica
Ɵ
on are met with coupling misalignment shown in
the catalog.
These devices, mechanical, are maintenance-free.
In the case of the torque is appropriate to take account of di
ff
erent variables that combined together can
a
ff
ect the length of the limiter:
- Torque interven
Ɵ
on in rela
Ɵ
on to the range provided by the limiter.
- Whether the frequency and dura
Ɵ
on of interven
Ɵ
ons.
- Ability to dissipate heat generated by the sliding.
- Speed of rota
Ɵ
on.
- Environmental working condi
Ɵ
ons.
Displacement (mm)
Time (sec)
Load (N)
Torque (Nm)
Calibra
Ɵ
on torque (Nm)