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Safegard Overload Clutches
The Safegard series of overload
clutches were developed to provide
overload protection of high
torque values with a compact
unit. Directly interchangeable
with other units in the market,
this series offers low cost
precision with minimal maintenance
for a long reliable service
life.
Safegard clutches are in two
basic series, the Standard series,
for optimum speed and torque,
and the Mini series, for lower
cost option on slower speed
drives. Both series are also
available as shaft couplings. |
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| Four
options of operation are available.
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1.
The basic Safegard CSF design,
using ball driving system for
high speed, non synchronous
applications.
2. The Synchron CSY design,
with roller drive for lower
speed synchronous applications.
3. The Safe Lift CSL, also with
roller drive, but remaining
in constant drive, only indicating
overload by axial movement onto
the limit switch.
4. The Safebreak CSZ design
where the unit is held on totally
free running condition after
overload and requires manual
re-engaging. |
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Series
CZ/CN Zero Backlash Safegard Overload Clutches
Zero backlash Overload Clutches
and Couplings, series CZ available
in 8 different basic types and
12 basic sizes, for shaft diameters
from 8mm to 60mm; providing
overload protection for torque
values from 5Nm to 740Nm.
The CZ series Safegard overload
clutches were developed to provide
a totally backlash free transmission
of power with a very responsive
overload protection. These compact
units are directly interchangeable
with existing designs in the
market providing a cost advantage
with long reliable service life.
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| Two
basic modes of operation are
available: |
1.
The basic CZF Safeguard ratchetting
design with the driving balls
equally spaced so that the clutch
can re-engage after a small
angle of rotation
2. The Synchron CZY design with
the balls unequally spaced so
that the clutch can only re-engage
after a full revolution so providing
full synchronisation between
driver and driven
Responsive overload reaction
is obtained by the use of negative
functioning disc springs to
apply drive load. In the event
of an overload the spring load
actually decreases, allowing
faster disengaging of the drive
and minimal pressure on the
driving surface in the disengaged
mode. |
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Series
CP Safegard Pneumatically operated Overload Clutches
CP Clutches are zero backlash units
which provide remote accurate
adjustment of the overload torque by
air pressure adjustment. The torque
can be constantly adjusted throughout
a production cycle providing optimum
machine protection.
CP Overload Clutches can be integrated
into complex control systems with
substantial advantage in automatic
machinery with continuous changes of
operating conditions. A stop switch is
integrated in the torque limiter
detecting the axial movement of the unit
in event of an overload, providing a
signal to cut off the air feed, to
disconnect the drive. When overloaded,
the CP Clutch has no connection between
drive and driven sides providing a long
maintenance free service life. After the
cause of the overload has been removed
the clutch can be automatically re-engaged
by resumming the air pressure. Standard
finish on the clutches is black phosphate
exterior, but can supply in Nickel plated.
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