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Berges® Spring Tensioning pulley type F211
Berges® Spring tension Pulley with torque control type D350b for use with wide belts type CW-b 70 and adjusting pulley R350b
So item Z-18 is a 10mm wide beth with a 18" pitch length
Spec sheet: 184032121
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UDL Mechanical Speed Variator Size:71B5 Berges® Spring Tensioning pulley typeTramec UDL Disc type mechanical variator operates on an elliptical disc that provides infinitely variable reduction ratio. Output speeds range from 76 to 12% of motor input speed, while multiplying torque proportionally to speed reduction at an 84% average efficiency. Machinery designers appreciate the simple, low cost, low maintenance, and reliable nature of these compact mechanical speed variators. Features: 3 sizes IEC 63B5, 71B5, 80B5 input
