Pr
o
-
C
Series
20
Belts
How to Measure, Assemble and Install Pow-
erTwist® Plus™ V-Belts
PowerTwist
®
Plus
TM
V-Belts are supplied by Fenner
Drives. For additional information about the company,
please refer to the contact information on page 22.
Measuring the Belt
Pull belt tight around sheaves to check hand tight
length, overlapping the last two tabs with two holes
in matching links as shown in Figure 15. Count the
number of links and remove one link for every 24 of
O/3L, A/4L and B/5L sections and one link for every 20
of C section. This gives the correct installed belt length and
will ensure optimum belt tension when running.
Note: Every tenth link is designated with an arrow. For
multiple belt drives, ensure that each belt has the same
number of links.
Figure 15. Measuring the belt.
1. Hold belt upside down. Bend
back as far as possible and
hold with one hand. Twist one
tab 90° parallel with slot.
2. Pull end of link over tab.
3. Rotate belt end with tab
90°.
4. Pull belt end through two
links.
1. Hold belt with tabs pointing
outward.
2. Place end tab through two
links at once.
3. Flex belt further and insert
second tab through end link by
twisting tab with thumb.
4. Ensure tab returns to position
across belt. Reverse belt so
tabs run inside.
Note: Turn belt inside out (as shown above) to ensure easy assembly and disassembly.
