This v-belt installation guide will show you what you need to do to prepare the pulleys for a new variable speed belt, as well as the best method for installing the belt itself.
Check Pulleys for Damage and Debris
the installation of V belts, Yorkshire-based
supplier YB Components recommend giving the variable speed pulleys a thorough
check for wear and tear. Also look out for dirt, debris and other foreign
material which should be cleaned or removed before beginning to install the
variable speed belt.
When a variable
speed pulley is worn out, it should be replaced immediately to maintain a good
contact between the pulley and belt. Continuing to operate with a worn out
variable speed pulley will significantly reduce the lifespan of the belt, as
well as cause slippage and a reduction of the drive’s power transmission.
Worn pulleys and
especially those with broken sides will also create extra vibrations which can
lead to an exponential increase in wear and tear.
Check the Pulley Groove and Pulley Gauge
attention to the surface finish of the pulley groove, as a worn or course
groove surface will interact aggressively with the belt surface and drastically
reduce the lifespan of the variable speed belt. V-belts suppliers will always
recommend a close inspection of the pulley groove’s surface before installing a
You should also
check that the pulley fits snugly with the shaft. Any misalignment between the pulley
and shaft will cause an erratic jerking motion when the drive starts which adds
unnecessary wear and tear that will reduce the lifespan of the drive.
How to Install V-Belts
Once the pulleys
are checked for debris and the gauge is aligned correctly, it is time to
install the v-belt. Yorkshire supplier YB Components recommends reducing the
centre distance of the pulleys enough so that the variable speed belts can be fitted
on loosely at first. Once they are on loosely, you can then restore the original
operational centre distance.
ensures you do not have to use a lever to install the belt. Using a lever is
not recommended by v-belt suppliers as it can cause damage to the belt’s tensile cords. You can also cause a permanent twist in the
belt by using a lever, which results in the belts turning in the pulley groove
Re-tensioning Variable Speed Belts
The tension of
the newly installed v-belts should be monitored during the first 48 hours of
operation. It is after a new belt is installed that it is most vulnerable to
losing tension due to the settling-in process all variable speed belts require
when beginning to perform their purpose. If you discover the belt tension has
loosened, then simply re-tension as necessary during the first couple of days.
After this period the belt should have settled in and further need of
re-tensioning will be unlikely.
If you require variable
speed belts from any of the excellent v-belt manufacturers from around the
world, then contact YB Components who are the UK’s leading v-belts