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EZ ALIGN
™
RED
PRECISION LASER ALIGNMENT OPERATING INSTRUCTIONS
Shown Vertical
Angularity
After Vertical
Angularity Correction
Shown Horizontal
Angularity
After Horizontal
Angularity Correction
Shown Axial Offset
After Axial Offset
Correction
The sequence
in which the
misalignment
correction is
carried out may
vary from one
situation to the
next.
FORCE–DEFLECTION METHOD
OF BELT TENSIONING:
1. Measure the belt span length and calculate
the desired deflection distance (1/64" per
inch of span length).
2. Using a spring scale, press down on the belt
in the approximate center of the span, and
deflect the belt to the desired level. When
the desired deflection distance has been
reached, note the force registered on the
spring scale.
3. Adjust belt tension until the force required
to achieve the desired deflection distance is
within the belt manufacturer’s recommended
force values for the type of belts being used.
New belts generally require higher tension
levels than used belts because they have not
been run in.
Incorrect belt tension (as well as pulley
misalignment) adversely affects belt drive
reliability and efficiency. After the pulleys have
been aligned, it is very important to tension the
belts to manufacturer’s recommendations.
The following diagrams depict misalignment
conditions using the Gates EZ Align
™
and the
corresponding corrections as observed on the units.
Vertical angularity should be corrected first. This
is done by shimming the unit that the movable
pulley is mounted to. The next step is to correct
horizontal angularity. This is accomplished by
shifting or twisting the position of the unit that
the movable pulley is mounted to. Use lateral
jackscrews if available, otherwise the unit will need
to be loosened and re-positioned. Finally, correct
axial offset by moving the unit that the movable
pulley is mounted to axially or reposition one of
the pulleys on its shaft. Since performing one
alignment correction almost invariably affects the
other alignment conditions, this process may have
to be repeated several times.
Gates EZ Align
™
enables all three alignment
conditions to be monitored simultaneously. The
accuracy of the alignment is greatly increased and
the process can be completed quickly and easily.
