Timing Belt Pulley The Belt Tension Value Must Be Accurate

After the Timing Belt Pulleyis running for 2 to 3 years, when the core reaches the fatigue life, the Timing Belt Pulleyfailure is normal. After a long period of operation, the Timing Belt Pulleydue to the core to reach the fatigue life and failure, which is an ideal Timing Belt Pulleyfailure mode. Figure 1 is a jagged rupture Timing Belt Pulleyat a 45-degree angle, which is typical of the belt's core to achieve normal fatigue life.

The Timing Timing Belt PulleyPulley of the Timing Belt Pulleyis also ineffective, but this does not belong to the ideal Timing Belt Pulleyfailure mode. In the long run, although the Timing Belt Pulleyto maintain the initial size and shape, but the Timing Belt Pulleyteeth will wear. The exposed fibers of the canvas can make the Timing Belt Pulleyteeth look rough and dry.

The Timing Belt Pulleyafter 2 to 3 years of operation does not require any further improvement. Timing Belt Pulleylife will be due to the different applications, as well as a variety of objective factors have a greater change. Factors that affect Timing Belt Pulleylife include transmission power rating, environment, Timing Belt Pulleymounting tension, belt-to-wheel matching, pulley quality level, and even how to cut, package, transport and install belts.

Timing Belt Pulleybending failure

Timing Belt Pulleybending failure mode is usually expressed as a broken surface of the core line in a straight line.

This failure mode occurs when the Timing Belt Pulleycore is bent to a very small diameter. A sharp bend will bend and damage the Timing Belt Pulleycore fibers under great pressure, resulting in a decrease in the tensile strength of the belt. Timing Belt Pulleybending failure is the most common failure mode, usually with the Timing Belt Pulleyimproper operation, the installation of tension is too low, the pulley diameter is too small and the wheel with foreign matter and so on.

Due to improper operation caused by the Timing Belt Pulleybending reasons are: improper storage, improper packaging and Timing Belt Pulleyinstallation and installation before the improper operation. The Timing Belt Pulleymay be tilted until it reaches an acceptable tension, which is called automatic tensioning.

Automatic tension in the Timing Belt Pulleyof the loose edge or Timing Belt Pulleyteeth into the drive wheel groove where the most clearly observed. When the Timing Belt Pulleyis automatically tensioned, the Timing Belt Pulleyteeth will jump out of the wheel groove until the Timing Belt Pulleytight side of the tension to force the Timing Belt Pulleyteeth and then into the pulley groove. When the Timing Belt Pulleyis forced back to the wheeled trough, it often results in violent, momentary bending of the Timing Belt Pulleyand pulley contact points, which can cause damage to the Timing Belt Pulleycore. This part of the core damage is called bending. If the tight side of the tension can not make the Timing Belt Pulleyteeth into the wheel groove, the Timing Belt Pulleywill produce a tooth, also will produce bending failure or Timing Belt Pulleytooth damage.

Timing Belt Pulleyinto the diameter of the pulley is too small, it will lead to damage to the Timing Belt Pulleycore or bending failure. The pulley and the back idler are below the specified minimum, and the idler between the Timing Belt Pulleyand the pulley is even bent with a small sharp angle by hand, which causes the Timing Belt Pulleyto fail.

Transmission system has a foreign body to enter the same will make the Timing Belt Pulleybending, they will make the Timing Belt Pulleyand the wheel between the formation of a sharp angle, so that the Timing Belt Pulleycore bending. Using a tool to force the Timing Belt Pulleyto the pulley will also damage the belt. The Timing Belt Pulleydoes not fail immediately after the use of improper tool (such as a screwdriver) when the foreign body enters or installs, but the belt's overall life will drop.

Impact load

When the gap required by the driven equipment or the periodic torque load is greater than the normal level, the impact load should be more than the Timing Belt Pulleyitself can withstand the force, the impact of the transmission system appears. Tend to exacerbate the belt's failure. Ordinary V-belts can be used to instantly slip to reduce the impact load, but the Timing Belt Pulleymust be transmitted all the load.

A severe impact load can cause the Timing Belt Pulleycore to break in a rough, uneven form. The Timing Belt Pulleyteeth can develop into tooth root cracking and / or tooth shedding after an immediate impact load in the pulley. If the impact load occurs only once, or in the Timing Belt Pulleyfixed position to repeat the cycle, the remaining teeth of the Timing Belt Pulleymay still look normal. Describe how tooth root cracking spreads in the teeth. Fractures formed in the tooth root sometimes diffuse to the tip. The accumulation of too much cracks when the teeth will cut, it will only leave part of the teeth.

 The impact load generated by the driven equipment may be a part of the transmission system operation, or may come from accidental, harsh conditions, such as clogging. If the impact load of the drive system is unavoidable, the strength of the core of the Timing Belt Pulleyneeds to be increased, or the Timing Belt Pulleycan be intermittently slipped instead of the Timing Belt Pulleydrive.

Timing Belt Pulleyinstallation tension is too high

Timing Timing Belt PulleyPulley Timing Belt PulleyPulley Pulley installation tension is too high will cause the Timing Belt Pulleyteeth cut or broken. A lot of tension is too high in the Timing Belt Pulleyon the tooth surface are clearly left the teeth of the wear marks. Examples of the surface area of the Timing Belt Pulleybeing pressed and the cracking of the tooth root. Tooth root cracking is usually extended through the core line to its adjacent cracks, the individual Timing Belt Pulleyteeth will slowly fall off. The Timing Belt Pulleywith a high tension is overshooted on a large pulley. Excessive Timing Belt Pulleysurface pressure will cause the Timing Belt Pulleyto wear in a large area and eventually cause the Timing Belt Pulleycore to be exposed. In order to prevent such wear problems, the appropriate Timing Belt Pulleyinstallation tension value must be set accurately.

Timing Belt Pulleymounting tension is too low

Moderate to high load of the transmission system in the installation of tension is too low will lead to premature failure of the belt. The Timing Belt Pulleyfailure mode, which is usually caused by low tension, is shown as jumping teeth. Timing Belt PulleyGirdling means that the teeth of the Timing Belt Pulleyclimb out of their corresponding troughs and their roots are no longer subjected to loads. The drive load is further applied to the side of the Timing Belt Pulleyto bend the Timing Belt Pulleyteeth and then run. The teeth are rolled to cause the rubber to tear from the tooth root along the core. With the spread of rubber tear, the Timing Belt Pulleyteeth began to strip off the belt. Due to excessive jumper caused by the failure may seem like rubber and cord viscosity is not enough. However, due to lack of viscosity caused by the failure of the Timing Belt Pulleyin the exposed core wire is usually kept clean, and hobbing failure mode is different.

When the Timing Belt Pulleyteeth to climb out with a wheel groove and automatically tension, the rubber tear and tooth off before the Timing Belt Pulleyprone to jump teeth. The damage to the Timing Belt Pulleycore caused by the gears tends to cause the Timing Belt Pulleystrength to fail prematurely, and the damage is similar to that of the broken core (rugged), which is similarly similar to the impact load (jagged and angular). If the Timing Belt Pulleydoes not jump teeth and continues to run during self-tensioning, there is often an excessive wear of the Timing Belt Pulleyteeth. This tooth wear is called hook-shaped wear, because the Timing Belt Pulleyteeth and the pulley does not match. The hook-shaped wear is due to the insufficient installation of the Timing Belt Pulleyand the lack of a strong drive system in the case of low tension in the center of the distance caused by the change.