Aimco AcraDyne ABETP Cordless XT Series, Operation Manual

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8.4 Installation of Reaction Bar
WARNING: Remove the battery before installing the reaction arm.
Caution is required. Failure to exercise caution and correct operating
technique can result in serious personal injury, loss of limb, or death.
AcraDyne® XT Tools deliver high amounts of torque to an application. As is
the nature with all tool systems that function in this manner, high amounts
of torque reaction will occur. AcraDyne® XT systems work with Reaction
Bars that engage the tool with snap ring and, when used correctly,
counteract the natural torque reaction in use by pressing against a part
detail or adjacent nut/bolt.
it is essential that these forces are understood completely by the
operator and that the reaction bars have been chosen with the
application’s specific geometry in mind.
AcraDyne® offers a range of Reaction Bars from stock and will design
specific Reaction Bars to suit specific applications upon request.
It is the user’s responsibility to ensure that the correct Reaction Bar or
Tool Holding Fixture is in place PRIOR to use of the AcraDyne® XT Series
Nutrunner.
8.4.1 Reaction Bar Guidelines
Caution is required. Failure to exercise caution and correct operating
technique can result in serious personal injury, loss of limb, or death.
The guidelines offered below are only guidelines. Should there be any
doubt as to the integrity of a proposed reaction strategy, it is strongly
advised to consult with an AcraDyne® authorized representative prior to
executing strategy.
Reaction force is equal to the point being applied. The magnitude of the
reaction force is dependent upon the perpendicular distance between the
point of reaction and the centerline of the gearbox. In other words, the
greater the distance the lower the force experienced. For this reason, the
point of reaction should be kept as far away from the centerline of the tool
gearbox as possible.