Flender Corporation

Flender is a global manufacturer of mechanical drive technology with more than 125 years of engineering heritage, serving 18 industries worldwide as a leading gear unit and coupling specialist. For water and wastewater applications, Flender provides purpose-built drive solutions including the FLENDER ONE gear unit, helical and bevel-helical gear units, the PLANUREX 2 and PLANUREX 3 standard-series platforms, aerator-specific gear drives, travelling bridge drives, and turbo gear units. The coupling portfolio spans nine distinct types: N-EUPEX and RUPEX pin-and-bush couplings, BIPEX-S claw couplings, ARPEX all-steel disc couplings (including the ARPEX ART turbo coupling line), ELPEX-B rubber-tire couplings, ZAPEX gear couplings, and FLUDEX fluid couplings. Complementary offerings include bevel gear sets, oil supply systems, and industrial lubricants. Flender's AIQ digital platform provides predictive maintenance services — AIQ Core, AIQ Detect, AIQ Care, and AIQ Analytics — giving operators real-time condition monitoring for drive assets. The company designs and manufactures products in-house with full machining, heat treatment, and testing capabilities, supporting applications from pumps and aerators to filters, centrifuges, and cooling towers across municipal and industrial water treatment facilities.