Straightedge touching sheaves at points indicated by arrows.
Cord touching sheaves at points indicated by arrows.
ALIGNMENT USING STRAIGHTEDGE (A)
ALIGNMENT USING STRING (B)
Cord tied
to shaft
4. Inspect tension after:
• The rst 24 hours of operation.
• One week of operation.
New belt tension will drop rapidly during the rst few hours
of operation.
5. Overtensioning shortens belt and bearing life.
6. Keep belts free from foreign material, which may cause
slip.
7. Make V-drive inspection on a periodic basis. Tension belt
when slipping is observed. Never apply belt dressing, as this
will damage the belt and cause early failure.
1. Measure the span length, K.
2. At the center of the span (K), apply a force (perpendicular
to the span) large enough to deect the belt 1/64" for every
inch of span length. For example, the deection of a 100-inch
span would be 100/64 or 1
9
/
16 inches. See Figure 55.
BELT
DEFLECTION
1/64" PER
INCH OF
SPAN
K
SPAN
FORCE
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