Timing Belts Catalogue

150Calculation ParametersCalculation ParametersStep h: Check all calculated dataAll data found out with the calculation steps must be checked:Calculation Parameters• Is the calculated belt width exceeding the range of available standard widths? Inthis case the calculation process must be repeated starting from step 3 „Choice oftooth profile and pitch“! Select a more efficient tooth profile form and/or a biggerpitch.• Is the calculated belt width much smaller than the smallest available standardwidth? In this case the calculation process should be repeated starting from step 3„Choice of tooth profile and pitch“ to find a lower cost belt type. Either to select aless efficient profile and/or a smaller pitch.• Has the maximum number of engaged teeth (normally 12, but 6 for a jointed belt)been taken into account at the calculation of the belt width? If more teeth havebeen taken into account, the belt might be overloaded!• Is the calculated belt width suitable for the construction? If the belt is too wide, thecalculation process must be repeated starting from step 3“choice of tooth profileand pitch“ selecting a more efficient tooth profile and/or a bigger pitch.• Is the calculated centre-centre distance suitable for the construction? This must bechecked exactly, especially for moulded belts which are only available in specificlength. Alternatively jointed belts can be used which are available in every requestedlength but which are weaker than moulded belts. Perhaps repeating step 4“calculation of the transmission ratio” with a different number of teeth for thedrive pulley results in a more suitable solution.• Are the calculated pulley sizes available? For exceptional applications special pulleyscan be manufactured with a particularly large number of teeth. Too small pulleyscan damage the timing belt by exceeding it’s flexing ability and the life time isreduced considerably.• Have the permitted tensile strengths been checked (especially of the jointed timingbelts)?Result step 8: Checked results from the previous stepsOrdering timing belts and pulleysAccording to the nomenclature shown in the corresponding chapter of this cataloguetiming belts and pulleys can be ordered at Ammeraal Beltech, or a sales partner ofAmmeraal Beltech.Copyright © Ammeraal Beltech 2006