Page 6 Section 4 Operation
MSD SABER SERIES SHEARS
OPERATING THE ROTATOR
if equipped
The rotator gives the shear 360˚ of continuous rotation in both directions for easy, accurate processing at
all angles. The rotator requires special attention when operating the shear. The rotator is to be used only to
position the shear, not as a means of bending, twisting, or breaking material.
BACKDRIVING THE ROTATOR
Backdriving occurs when an excessive, off-center force is applied to the shear. Examples of this are closing
the jaws on a rigid member without the jaws being square to the member or handling a heavy load off-center
in the jaws. Backdriving puts undue stress on the rotation system and, if done continually, can lead to
rotation component problems. Follow the tips below to minimize backdriving as much as possible.
1. When handling a load in the jaws, try to grip it as close to its center of gravity as possible
2. When processing a long member that is suspended, make several shorter cuts rather than one long cut
where the member can come loose and backdrive the rotator.
3. When processing any rigid member, use the rotator to square the jaws to the cut. If the jaws are not
square, the rotator will backdrive to adjust to the cut.
OPERATING THE INTERNAL ROTATION CONTROL SYSTEM
if equipped
The foot switch installed in the operator’s cab is used to operate the Internal Rotation Control System,
assuming an alternative customer provided switch is not used. The foot switch provided by LaBounty has
three positions—center, front (toe), and back (heel). The switch will automatically move to the neutral center
position when it is not being used. No rotation occurs in this position. The other two positions will cause
the shear to rotate. One position will cause clockwise rotation and the other will cause counterclockwise
rotation.
RECHARGING THE ACCUMULATOR WITH FLUID
When using the Internal Rotation Control System, the shear will typically rotate between 100º and 270º each
time the accumulator is charged with fl uid. When the accumulator runs out of fl uid charge, it is necessary to
recharge the system before rotating the shear again. To recharge the system, simply open or close the shear.
The system draws hydraulic fl uid from the jaw circuit when the jaws are operated.
DO NOT use the shear rotator for any other purpose except to position the shear for a cut. Using
the rotator for any other purpose, such as bending or twisting material, will damage the rotation
components and may void the shear warranty.
