Consideration should be given
to starting torque particularly if the torque limiter is positioned
close to the motor. This may be up to three times the normal
running torque.
(2)
From the table below choose the unit size and spring code required
for this calculated torque taking into account the maximum bore
of the unit.
Torque Adjustment The unit will be despatched from our factory
with the torque setting requested. Calibration spacers are supplied
to prevent this setting being exceeded. If no specific setting is
requested, a spacer is fitted which will prevent adjustment over
the maximum capacity of the spring.
The spacers also help to position the disc springs correctly.
In case where requirements are difficult to calculate with a reasonable
degree of accuracy, the recommended commissioning procedure would
be to try to start the drive with a low torque setting, progressively
tightening the adjusting nut until the unit will start and drive
the mechanism without disengaging. Before attempting to turn the
adjusting nut, ensure that the locking screw is loosened and is
relocked after final adjustment.
Ordering
the 200 Series Torque Limiter
When ordering please specify the following:
• Model/ Type/ Size
• Spring code and torque required
• Bore and keyway details
• Pulley or sprocket details for models 221/ 202
• Units are available which trip in one direction only.
