5 DIRECT DRIVE SYSTEM DDS Other ■DDS Direct drive sprocket DDS Direct drive sprocket In order to drive the belt reliably, the tooth is pulled into the mesh of the belt and rotate it directly. The materials are UHWWPE and casting stainless steel. The direct drive sprockets engage with the belt meshes and turn directly so as to ensure steady belt drive. The materials are UHMWPE and SUS303 Stainless steel(casting). 5 Figure 3 Figure 3 Belt type Belt type DDK2-16.9-19.05-1.6 DDK2-16.9-19.05-2.0-2.0 Weight kg/m2 3.32 5.34 Acceptable tension N/m 1470 3630 Sprocket Number of teeth O.D. W-F L H Number of teeth 8 50.0 50.8 38.4 57.2 25.5 12 75.1 50.8 63.5 57.2 38.1 8 34.2 30.5 23.8 38.1 18.4 12 50.9 30.4 12 50.5 40.5 40.5 40.5 26.4-2.4-1.47.4 2.7-2 2.7.7-2.7.7.7.7-2 2 DK 2 1 1 1 2.4-2 DK 1 1 2 1 2-2 ■Standard specification (nominal size) △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ △ Sprocket is made of stainless steel in stock F-F W O.D.
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