The deflection force value (N) should lie between the minimum values given in the table.ĭeflection force less than minimum recommended value in the range indicates an under tensioned drive & deflection force higher than maximum recommended value indicates an over-tensioned drive. Read the deflection force value (N) on the Newton scale by taking reading at the lower side of the upper ring.Ĭompare the deflection force value (N) with the values given in the following table 1 on page 38. Apply force with the help of Tension Tester perpendicular to the span till the lower surface of the ring touches the string.

Place Tension Tester at the centre of the span of the belt. Adjust lower side of the upper ring at 0.00 N. The primary goal of learning how to tension a V-belt is to find this happy tension medium. However, there is still a wide range of tension between these two extremes in which a drive will operate sufficiently. Adjust lower ring on the Tension Tester on mm scale to coincide ‘x’ mm with the lower side of the ring. Proper V-belt tension is the lowest tension at which the belt won’t slip or squeal under peak load. Tie a string / thread on the two pullies along the length of belts and mark centre of the span on the belt.Ĭalculate 1.5% of the span (say 'x') for the belt length less than 1000mm & 1% of the span for belt length more than 1000mm. Measure the span length of the belt in mm (Ref.sketch) The belt tension in most drives can be checked with adequate reliablity by means of PIX V-belts Tension Tester. To ensure optimum V-belt drive operation, it is recommended to check the tension in the belts by measuring the deflection force value (N) with the help of a tension measuring device. Proper belt tension is vital to the operation of drive and the life of V-belts.

The tension meter is designed to measure static tension of a belt by determining the natural frequency of vibration of the belt under tension.General guidlines for tension measurement of V-belts) Generally the ideal pretension level is that which gives least vibration of the unloaded belt span in operation. The value Fpt can be determined by calculation where the peripheral force is known, or empirically where the torque value is unknown.

Supplied with long-life 9V alkaline battery, protective leatherette case and transport case with instructions.

Frequency range: from 7Hz to 400Hz Accuracy: +/-5%.

V-belt tension checker