Hycote Workshop Belt Slip, 400 ml

Product Information

i sprayed some wd40 on the drive and air con belt, i think it helped a bit, but the noise is still there. i know that there is a special spray for squeeky drive belts, do these work well? Note that the relative motion around the pulley is constantly increasing as the belt increases its speed more and more in accordance with the increasing elongation (condition of continuity!), but the pulley has a constant circumferential speed. This means that the belt speed and the peripheral speed of the pulley are only equal when the belt runs onto the driven pulley, otherwise the belt speed will be higher or the pulley speed lower. The elastic slip influences the belt speed and thus the power but not the circumferential force or the torque! As can be seen from the animation below, the belt is running more and more ahead due to the increasing stretching on the driven pulley. This means that the speed of an imaginary point on the belt is always slightly higher than the peripheral speed of the pulley. This corresponds to the relative motion between belt and pulley described above.

Slippage of the belt in belt drives - tec-science Slippage of the belt in belt drives - tec-science

The higher the circumferential forces to be transmitted and the more elastic the belt is, the higher the elastic slip!On all applications for elimination of slip under dynamic conditions. This product is designed for use on all types of conveyors and belts including “V”, round and flat types. WHERE NOT TO USE The relative motion on the pulleys, which is always present due to the elasticity of the belt, is called elastic slip (partial relative motion between belt and pulley)! The higher the circumferential forces to be transmitted and the more elastic the belt is (e.g. low Young’s modulus!), the greater the elastic slip. With the increased elastic slip, the sliding zone also includes a larger portion of the wrap angle. Figure: Increase in elastic slip with increase in circumferential force The peripheral speed of the driven pulley is lower than that of the driving pulley! The relative loss of speed in comparison to the driving pulley is a measure of the elastic slip! The strains ε can be determined as follows using the Young’s modulus E of the belt (not to be confused with the bending modulusE b!) and the acting belt stresses σ=F/A (with A as cross-sectional area of the belt):

BELT SLIP – Hycote BELT SLIP – Hycote

Note: In the previous articles on belt drives, the sliding anglewas equated with the wrap anglefor reasons of conservative calculations. The statements made must then always be interpreted at the limit to sliding slip! Calculation of the elastic slipThe belt adapts to the different speeds by elastic slip on the pulleys! Circumferential speed of the pulleys At the input pulley, the power P i=F c⋅v i is first transferred to the belt. The power reduced by the amount of the elastic slip (P o=F c⋅v o) is then taken from the output pulley. The difference in power corresponds to the power loss ΔP due to the stretching and shrinking processes of the belt (related to heating of the belt!):

Belt May Silence Adjusting Tension or Cleaning Fluid From a Belt May Silence

With the definition of the elastic slip S as the ratio of speed loss Δv and circumferential speed of the input pulley v i, the following formula applies v o: circumferential speed of the output pulley): The relative motion on the pulleys, which is always present due to the elasticity of the belt, is called elastic slip! Elastic slip In the animation below, additional marking lines are attached to the pulleys for better orientation. If one compares these pulley markings with the belt markings, the relative motion between belt and pulley can be seen very clearly. Animation: Stretching and shrinking of the belt around the pulleys There is a wide variety of reasons V-belts and pulleys slip. Some important reasons are: Worn pulleys Equation (\ref{4367}) also shows that if no circumferential force is transmitted (F c=0) there is no sliding zone (ln(1)=0!) but only an adhesion zone. With the transmission of a circumferential force, however, a sliding zone is created which increases with increasing circumferential force. As a result, the elastic slip also increases.The exact relationship between elastic slip S and circumferential force F c to be transmitted is to be derived in the following sections.The more the belt stretches, i.e. the greater the elastic slip, the greater the difference in belt speeds and thus also in the circumferential speeds of the pulleys. Therefore, the elastic slip S can be defined by the relative loss of speed at the circumference of the input pulley (v i) and the output pulley (v o): Note that in this case it is not, as previously always assumed, the static limit case in which the belt is not yet slipping. Rather, slipping is already present from the very beginning due to the elastic slip (µ s as coefficient of sliding friction!). The reduction in peripheral speed between the driving pulley and the driven pulley is directly relatet to a loss in power, because a decrease of the circumferential speed v at a transmitting circumferential force F c means a direct decrease in power according to the P=F c⋅v. Actually, No! WD40 is a water dispersant and NOT a repellant! It does not contain the ingredients to repel water as wax or silicone would. Negative wetting angles and all that...