HAMAR LASER L-708, Operation Manual

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3
The L-708 Laser Bore Alignment System Components
Model L-708 Laser
The L-708 Laser provides a
straight reference line to which
any bore can be aligned and
measured. The laser mounts in
an adapter, and the laser and
adapter are then mounted in
either two reference bores or in
each end of a continuous bore.
The laser projects a beam
through the adapter and down
through the inside of a bore
toward the A-512 Target,
which is mounted in the
opposite reference bore. The
laser beam is steered to zero on
the A-512 Target, representing
the centerline of the two
reference bores.
The L-708 Laser has been
designed with a 1.2495 in. (31.74 mm) mounting surface. The laser beam is concentric to the OD to
within .0003 in. (0.008 mm) and is held in place in an adapter by powerful magnets. With a range of 100
feet (30 M) and under good environmental conditions, it is accurate to .005 in. (0.13 mm) over the entire
range. The L-708LD Long Distance Bore Laser has a range of 200 feet (60 M) and under good conditions
should hold .010" (0.25 mm) over the full distance. The L-708LD requires the use of the T-1218 2-Axis
Target, T-1220 or T-1240 targets (20x20 mm PSDs) since the laser beam diameter is larger (10 mm). By
following the NORMIN procedure described in Appendix A, accuracies of .0002 in. (.005 mm) in 10 feet
(3 m) can be achieved.
The L-708 provides a straight reference line to which any bore can be aligned and measured. The laser
mounts in an adapter, and the laser and adapter are then mounted in either the bore or the counter bore of
the gearbox spindle. The laser projects a beam through the adapter and down through the inside of a bore
toward the A-512 Target, which is mounted in the opposite end of the bore. The laser beam is then
adjusted (qualified) to project the actual axis of rotation of the gearbox.
Figure 1 – The L-708 Laser
Power
Switch
Battery Connector
Horizontal Coarse
Angular Adjustment
Horizontal Fine
Angular Adjustment
Center of Adjustment
Range Indicator for
Coarse Adjustments
Vertical Coarse Angular Adjustment
Vertical Fine Angular Adjustment
Vertical Fine
Angular Adjustment
Fine Adjust Tool (Bar)
to indicate center of
range for fine adjustments