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Torque Reaction
The reaction bar ensures all reaction forces are contained, so torque reaction is not passed back to the
operator. Several reaction bar styles are available.
Fit reaction bar as detailed below.
Reaction Bar Type
Cranked Reaction Bar (Standard)
Single Sided Reaction Plate (Option)
Double Sided Reaction Plate (Option)
Nose Extension (Option)
It is essential the reaction bar rests squarely against a solid object or
surface adjacent to the fastener to be tightened.
DO NOT react on the surface circled in red on figure 6.
React on the end of the reaction bar, circled in green on figure 6,
using the maximum area possible.
The ideal reaction arrangement has the centre of the reaction bar and
the centre of the nut on a perpendicular line to the centre line of the tool,
see figure 7.
The supplied reaction bar has been designed to give an ideal reaction
point when used with a standard length socket.
To allow for a small difference in socket length the reaction bar may
contact any point within the shaded area of figure 7.
WARNING:
10
Fit reaction bar / plate over the drive square to engage
IF THE REACTION POINT IS OUTSIDE THE SHADED AREA EXCESSIVE
LOADS MAY BE PLACED ON THE TOOL LEADING TO POTENTIAL
OPERATOR INJURY AND DAMAGE TO THE TOOL.
Fitting Instructions
reaction splines. Secure with circlip supplied.
Fit as instructions supplied with nose extension.
FIGURE 5 – Nose Extension
FIGURE 6 – Reaction Bar Surface
FIGURE 7 – Standard Length
Socket Safe Reaction Window
X
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