NAVILUS gear units and other mechanical drives

Flender is one of the most renowned manufacturers of gearboxes and couplings with an international footprint and more than a century of experience in mechanical drives. Since 1998 upon the transition of Lohmann & Stolterfoht it also has its own marine gearbox portfolio, the NAVILUS range.


                                                                                                                                                                                                               Consistent industry orientation, leading technology, international production sites and worldwide service, we put our strengths to work for our customers. Between the engine and the propelling screw there are therefore economically designed drive and system solutions with maximum reliability, minimal maintenance costs and optimum efficiency. Siemens offers all types of marine gearboxes under the name Flender NAVILUS, with power ratings of up to 50,000 kW. Higher power ratings and custom solutions are available on request.

Flender has been supplying the shipping industry with drive technology for many years. Close collaboration with our customers and close links with the industry have provided the basis for a successful partnership for decades and at the same time acts as the indicator of our performance profile.

Our drives are optimized specifically for ships to transmit power to the propeller without unnecessary losses. Highest efficiencies and optimum power to weight ratios and the lowest possible vibration and noise generation are characteristics of our products and thus of our first-rate engineering.

Flender product line

                                                                                                                                                                                                               Our total Flender product line for marine applications consists out of:

• NAVILUS propulsion gearboxes, arranged with horizontally or vertically placed input and output shafts and driven by one or multiple engines.

• NAVILUS gearboxes for drive (shaft) generators, dredge pumps, jet pumps and cutter drives.

• Flender FSG / SIG industrial and SIP / PLANUREX planetary gearboxes, for instance for winches or deck cranes.

• Flender bevel gear sets, for example for use in bow thrusters or pod drives.

• SIMOGEAR and MOTOX geared motors for auxiliary drives or systems like conveyors.

• Flender couplings like the type ARPEX, ZAPEX, N-EUPEX, RUPEX, EPLEX and many more to be used in for instance pump applications and other shaft-to-shaft connections.

• Any add-on parts related to mechanical drives like brakes, oil supply and lubrication systems, pressure and temperature monitoring devices.

The Flender product line is not limited to the before mentioned but also includes a wide range of special designs and former series that are still in production. Feel free to ask!