DIRECT DRIVE BELT 3 Type No. DDK2 Left winding and right winding spiral are alternately embedded, and connected with a crimped rod, driven by a dedicated sprocket. The dedicated sprocket is designed by specification of belts. The left-wound and right-wound spirals are arranged alternately and jointed with the pre-crimped rods. Since the direct sprocket drive is applied, the belt must conform to the specific specification. Features Advantages ●As driven by sprocket, no slip meandering. Because the sprocket is used for driving, slip and meandering do not occur. ●Since rotating diameter can be reduced, transfer of transport material is smooth. Since the rotation diameter at terminals is small, smooth load transfer is ensured. ●Our own Hardy-2 ※It is a belt with less elongation and hard to deform. Because Kansai's unique Hardy-2 (※) is used, the belt is characterized by little elongation and high deformation resistance. ●Light weight because the number of parts is smaller than a belt with a chain. As compared to the chain driven belt DDK2 requires smaller number of component parts, so that it is lighter. ●Washing is easy because there is little dead space. Because of reduced dead space, easy washing is ensured. ●The standard specification of the belt is fixed, making it easy to select. Since the standard specification of belts has been established, selection is easy. ●It is a system with low total cost. The system is characterized by lower total cost. DDK2-5-6.35-1.2-0.9 3 Rod diameter Rod diameter 2 Rod pitch 1 spiral pitch Spiral pitch 4 Spiral diameter Spiral diameter ■How to express belt designation ■Standard specification (nominal size) ※Hardy-2 has a hard line of SUS304 with a hardness of 30% or more. Hardy-2 uses SUS304 hard wire having hardness increased by more than 30%. Table 1 Table 1 1 2 3 4 This is a graph when the growth of ordinary products under certain loads is set to 100. Comparison of elongation at the same load Normal product 100 100 71.4 80 60 40 20 0 Hardy-2 As shown in the graph, Hardy-2 does not extend to normal products. In addition, since the hardness is improved by 30% or more, the wear resistance is excellent and the life span is longer. By making the belt Hardy-2, reliable driving and long life are achieved. As is evident from the figure the elongation of Hardy-2 is smaller than that of ordinary belts. Because of increased hardness (by more than 30%) it has excellent wear resistance and longer service life. Hardy-2 ensures reliable drive and long life. ■Hardy-2 Strong Belt - Hardy-2 - Figure 1 Figure 2 The elongation of ordinary belt under specific load is taken as 100. Comparison of elongation under same load Ordinary belts Specification weight Weight (kg/m2) DDK2-16.9-19.05-1.6 3.32 DDK2-16.9-19.05-2.0 5.34 DDK2-10.1-12.7-1.4 4.48 DDK2-10.1-10.1-12.7-12.7-1.6 5.90 DDK2-7-1.6 5.90 DDK2-8.2-1-1.2-1-1-1-1.2-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1
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