|
What is a Torque Multipliers?
It is a simple gear box, works on the principle of
‘Epicyclic Gearing’. The given load at the input
gets torque multipliers as per the multiplication factor &
transmitted at the output, there by with a minimum
efforts you achieve greater load.
How They Work
Hand Torque Multipliers incorporate an ‘Epicyclic’ or
‘Planetary’ gear train having one or more stages.
Each stage of gearing increases the torque
multipliers applied
by a factor of 5, allowing to offer torque multipliers in
ratios of 5:1, 25:1 and 125:1. In the planetary gear
system, torque multipliers is applied to the input gear or ‘Sun’
gear. Three or four planet gears whose teeth are
engaged with the sun gear and therefore rotate. The
outside casing of the torque multipliers, or ‘Annulus’ is
also engaged with the planet gear teeth, and would
normally rotate in the opposite direction to the sun
gear. A reaction arm prevents the annulus from
rotating, and this causes the planet gears to orbit
around the sun. The planet gears are held between
input & output plate which also holds the output
square drive. Therefore as the planetary gears orbit
around the sun gear, output plate the and so the
square drive turns. Without the reaction arm to keep
the annulus stationary, the output square will
not apply torque multipliers.
Why use a Torque Multipliers?
Safety - Use of long levers can be dangerous.
Torque Multipliers mean a reduction in the lever
length or operator effort by a factor of 5, 25 or
125.
Space Limitation - The use of a long lever
may be impossible due to restricted space.
Accuracy - Torque Multipliers will be applied most
accurately when it is applied smoothly and slowly.
Torque Multipliers enable this by removing much of
the physical effort from the tightening task.
Advantages Of Torque Multipliers:
| The ratio stated
is the true torque multiplication factor. |
| No correction charts are needed
to determine torque multipliers output. |
| Strong, safe Anti Wind-Up
Ratchet available on most models for safe and
comfortable operation. |
| A wide range of
alternative reaction arms are available as per
customers requirement, making the Torque
Multipliers |
| adaptable to many
applications. |
Anti Wind-Up Ratchet (AWUR):
With any high ratio gearbox (25:1 or more) a certain
amount of wind-up (spring) has to be taken up before
any useful tightening work is applied to the nut.
Each time the input device is
released, the wind-up will rotate it back against
the direction of operation.
The Anti Wind-Up Ratchet retains all
of the wind-up forces as they are created, with the
following benefits:
-
The torque multipliers input device can not
fly backwards against the direction of operation
if it is suddenly released.
-
Without an Anti Wind-Up Ratchet,
it will often be necessary to continue to make
360 sweeps with the torque multipliers input device
otherwise the torque multipliers will ‘unwind’. However,
obstructions will often make this impossible.
-
With an Anti Wind-Up Ratchet
fitted, the torque multipliers becomes locked onto The
nut because the reaction plate is held hard
against the reaction point. This means that even
used upside down, the torque multipliers will support
it’s own weight.
Standard Series Anti Wind-Up Ratchet
Safety Note: Additional
support is recommended as failure in the bolt,
socket or torque multipliers will release the wind-up forces
and cause the torque multipliers to drop.
Hand Torque
Multipliers - Standard
Series
 |
