V-Belt World - A Portal For V-Belt information
Sunday, 16 March 2014
What influences efficiency of V-Belt?
V-belt efficiency depends on the load being transmitted, sheave sizes, the number and size of belts, and their temperature. But most of all, efficiency is affected by installation and maintenance factors, such as tension, misalignment, and worn sheaves.
Saturday, 1 March 2014
Most common V belt causes of belt failure.
Listed here are some of the most common V belt causes of
belt failure.
•
Worn or damaged Sheaves.
•
Sheaves Misaligned
•
Insufficient Tension
•
Wrong Belt Cross-Section or Type
•
Improper or Prolonged Storage
•
Excessive Heat
•
Excessive Oil or Grease
•
Use of Belt Dressing
•
Abrasive Environment
•
Excessive Moisture
•
Inappropriate Sheave Material
•
Improper Tensioned Idler
•
Belts Rubbing Guard
•
Belts
Pried On or Misplaced Slack
•
Defective
or Worn Backside Idler
•
Excessive
Exposure to Oil or Grease
•
Use of
Belt Dressing
•
Worn or
Damaged Sheaves
•
Insufficient
Tension
•
Wrong
Belt Cross-Section or Type
•
Overload Drive-Underbelting
•
Insufficient Wrap on Small Sheave
•
Foreign Objects In Grooves
•
Sheaves Too Small
•
Backside
Idler
•
Sheaves
Misaligned
•
Improper
or Prolonged Storage
•
Excessive
Tension
•
Worn or
Damaged Sheaves
•
Prying
open The Split With a Screwdriver
Saturday, 20 April 2013
Here we are discussing about belt
turn over problem. It happen either issue within the machine or improper
installation of belt. It can be overcome by replacing correct size V-belt or it
should be installed properly. The belt will need to not be pried on, the right
belt type and cross section and the belt needs to be tensioned to the manufacturer’s
specifications. If you have a machine that has an automatic tensioned and you
still have slack then you may have the wrong belt.
If still problem appearing after
replacing the belt than move to the machine and check if there is a problem
with the sheaves & also check if the sheaves are misaligned you can either
place the belt is the groove and see if there is a bend or, place a flat edge
along the sidewall of the pulleys and make sure they are straight. In some
cases it might pay off for your company to invest in a Gates EZ Align Laser Tool. The
Gates EZ Align Laser Tool uses a visible laser to show you whether or not the
pulleys are aligned properly. The last step would be to make sure that the
bearings on each of the sheaves is still good. If the bearings are bad, the
pulley would be able to move out of alignment.
Sunday, 20 January 2013
V-Belt Slippage Causes and Solutions
Belt slippage is one of the common problems on a V-Belt driven system that caused delay & reduces the worth of a Machine. It’s indirectly or directly affects our Time, Money & Labour.
Reasons like Worn or Damaged Sheaves, Wrong Belt
Section, and Insufficient Tension, Excessive Grease or Oil, Excessive Moisture
and Insufficient Wrap on Small Sheave are the causes for V-Belt slippage but
frequently it happens due to V-Belt Stretchiness.
Improper Installation is also a major reason
for Slippage. Generally what happen, when during Installation more Tension is
applied on the V-Belt for faster Installation, It causes V-Belt to stretch more
than normal.
In case of Slippage Problem we should ensure
that the belt on the machine is the correct size and has not stretched. Sheaves
also need to be checked. The worn and/or damaged Sheaves will cause the belt to
slip. The way to determine whether or not the pulleys are at all defective is
to either purchase a tool that sits in the pulleys to make sure that the sides
are making contact with the belts, or replace the pulleys.
Always choose the belt as per the requirement
of machine to get the maximum output out of it. For example if your machine is
being used in areas of extreme moisture then that could be the culprit. Or, if
your belt runs on a machine that may have a leak of any sort of liquid that
could be the problem as well.
Apart from the above reason one major area of
focus is the Cord used in the V-Belt. The Cord used in a V-Belt as a tension
member is most often constructed out of a Polyester material and this decay
over time. Latest development in Cord is the invention of Kevlar Cord. Kevlar
Cord increases life of a V-Belt and give a longer life than the Polyester Cord
V-Belt and also offer solution to Slippage Problem.
Another
interesting situation is like let’s say that the belt goes from one pulley to a
pulley that is only two inches in diameter. A standard belt will have a hard
time making sufficient contact with the pulley. To resolve it, use a V-Belt
with Cogged instead of a Standard V-Belt.
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