Loher - Marine Electric Drive Systems

Loher is a supplier of electrical drive systems that encompass the entire drive train, including mechanical, electrical and electronical components. Particular ship and marine drive products include thruster drives, compressor drives, pump drives, drives for ventilators and drives for cranes and winches.

Loher drives, both in low and high voltage design, are in operation worldwide on ships, on platforms, in the process and petrochemical industries, in elevators and escalators, in mines and even in sub-sea installations. Loher also manufactures products for environmentally friendly applications such as generators using wind and water power.

The complete drive train package from one source

Loher is one of the very few companies worldwide to offer a complete electrical drive system. We have a unique position in the market to offer the customer our complete knowledge of electrical and process-related drive technology. All this from one partner.

Marine electric motors, generators and inverters

Our product line consists of:

• Wide range of low- and high-voltage motors and generators with outputs ranging from 0.1kW to 10,000kW
• Frequency inverters from 2.2kW to 6,000kW (400V to 950V)
• Explosion-proof drives (non-sparking, increased safety, flame-proof enclosure, pressurized enclosure)
• Low-voltage motors and generators of the highest outputs (e.g. for ship drives, inverter drives, wind turbines)
• Special motors and inverters for drives for conveyor systems (e.g. for elevators, escalators, cranes)
• Special machines for market niches (e.g. sub-sea, mining, high temperature applications)

Certified ship electric motors and drives

In the field of ship and marine applications, Loher is one of the leading suppliers for motors and drives according to international standards and delivers the products with all necessary certifications of the relevant ship classifications, i.e. ABS, BV, DNV, GL, LRoS, RINa and RS.

Loher is a reliable source both for tailor-made and standard motors and drives.

Loher products can be found anywhere on ships – on deck and under deck – from the bow to the stern.

The environment:

• Saltwater
• Salty atmosphere
• High pressure
• Low temperature
• Aggressive environment

Our product range for ships guarantees the highest degree of safety for both humans and equipment due to the reliability, experience and design we bring to each considered individual application:

• Thruster drives
• Compressor drives
• Pump drives (deepwell and booster drives)
• Drives for ventilators
• Drives for cranes and winches

Shipbuilding references

Loher delivers to the worldwide shipbuilding industry and is the partner of all well-known shipyards, machinery suppliers and engineering companies.

Our tradition is our future

Loher is proud to look back on more than 110 years of tradition. We are a medium-sized company, which means that we can assure our customers the highest possible flexibility, together with the in-house capability for tailor-made solutions.

Electric drive manufacturers - company information

Our fabrication facility is located in Ruhstorf / Rott, Germany, near the three-river-city of Passau. The factory comprises 100,000m² of floor space. Every year, about 50,000 motors and 3,000 inverters, mostly in special engineered designs, are produced by 1,100 employees.

Loher manufactures electric machines and inverters according to recognized quality standards such as ISO 9001. After the products have been supplied and installed, the customer can rely on Loher's after-sales service with about 250 service stations worldwide and a 24h service.