Standard_Parts_Catalogue

Page 1493 | 3.4 Installing, Lifting, Damping with Leveling Feet, Lifting Gear and Rubber Elements 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 GN 148 Leveling Feet continued The table below gives details on the maximum static load F, the maximum rated compression and the resulting stiffness R. The method shown on page 1494 and the values given below allow the maximum degree of insulation of the vibration to be determined as factor of the interference frequency. Terms F 1 = static load in vertical direction (pressure) F 2 = static load in horizontal direction (lateral thrust) s 1 = Compression in vertical direction (spring excursion) under load through F 1 s 2 = Compression in vertical direction (spring excursion) under load through F 2 Stiffness R: is the load which causes the damping elements to be compressed by 1 mm (spring rate) Equation for calculating the stiffness: R = F s Example of application d 1 Hardness in Shore Max. static load F 1 in N Stiffness R 1 in N/mm Max. compression s 1 in mm Max. static load F 2 in N Stiffness R 2 in N/mm Max. compression s 2 in mm  60 43  1100  340 3,2  2300  770 3     60 57  1750  550 3,2  3400 1130 3     60 68  2800  930 3    4000 1330 3     90 43  1500  430 3,5  3000  750 4     90 57  2800  800 3,5  5000 1330 3,75  90 68  4500 1290 3,5  7000 1870 3,75 113 43  3500 1000 3,5  4500 1290 3,5  113 57  6500 1860 3,5  7500 2140 3,5  113 68 10000 2860 3,5 11000 3140 3,5  126 43  7500 2140 3,5  9000 2570 3,5  126 57 12500 3570 3,5 15000 4290 3,5  126 68 19000 5340 3,5 22500 6430 3,5  F 1 2 s F 2 1 s