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6000 VSquirrel Cage (IC 81W + IC 86W)Motors for ships, offshore platforms and other marine applications

Two-Speed 6 kV Marine Motor for Maximum Efficiency and Flexibility

Two-speed ship motor for azimuth thrusters | 6000 V Medium Voltage Motor | certified by Lloyd's Register for safe maritime applications.

Menzel Elektromotoren develops high-performance marine motors engineered specifically for the demanding requirements of the maritime industry. The two-speed 6 kV squirrel-cage induction motor shown here—type MEBKSW630-8/10—was manufactured for a leading oil & gas company and successfully certified by Lloyd’s Register for marine applications. It drives an azimuth thruster, a key propulsion system on a large vessel deployed by an international petroleum company.

Menzel’s modular marine motor series, equipped as standard with IP55 protection and IC 81W cooling (air-to-water heat exchanger), enables flexible and cost-efficient configuration according to customer requirements:

  • Efficient & versatile – Two operating speeds for optimal adaptation to each operating mode
  • Reliable & robust – Designed for challenging marine environments
  • LR-certified & fully compatible – 100% interchangeable with the existing drive system
6000V two-speed ship motor frame size 630

Maximum maneuverability with azimuth thrusters

An azimuth thruster is a steerable propulsion unit used for both propulsion and steering. Unlike a fixed propeller shaft, an azimuth thruster can rotate 360°, enabling exceptional maneuverability. This propulsion type is commonly used on tugs, ferries, and offshore vessels and places stringent demands on the drive motor.

Optimal Performance enabled by flexible motor speeds

The medium-voltage motor supplied for the azimuth thruster is a pole-changing, two-speed marine motor featuring two separate windings for different operating speeds—ensuring maximum adaptability:

  • 8-pole winding: 2,000 kW at 895 rpm
  • 10-pole winding: 800 kW at 713 rpm

To dynamically adjust the thrust output, the drive must be capable of delivering multiple speeds.
Thanks to its high starting torque, the motor reliably accelerates the propeller even under load. Its stable torque characteristics compensate sudden load variations caused by waves or currents.

Technical Features at a Glance

The motor is built in a vertical configuration and designed for seamless replacement of existing drives. Additional features include:

Vertical design IM 3011 (IM V1) – Simple replacement of existing equipment
IP55 protection – High resistance to environmental influences
IC 81W cooling – Air-to-water heat exchanger for optimal operating temperature
Vibration- and shock-resistant – Engineered for dynamic environments
High overload capability – Durable and maintenance-friendly construction

Motor Performance Data

  • Motor type: MEBKSW630-8/10
  • Standards: IEC / EN 60034-1
  • Rated power: 2,000 kW / 800 kW
  • Rated voltage: 6,000 V (6 kV)
  • Rated frequency: 60 Hz
  • Number of poles: 8 / 10
  • Rated speed: 895 rpm / 713 rpm
  • Frame size: 500 mm

Weight: 12,500 kg

Robust Motor Series for Marine and Petrochemical Applications

The Menzel motor series stands out with its high power density, high efficiency levels, strong overload capability, and long-life bearing designs. The modular architecture allows cost-efficient customization while maintaining a proven and reliable platform.

For marine and petrochemical applications, Menzel also supplies explosion-protected motors and models with higher IP protection classes.

Lloyd’s Register Certification – Guaranteed Safety and Quality

Lloyd’s Register certification confirms compliance with international safety and quality standards. The motor underwent extensive mechanical, electrical, and operational testing, including assessments of load capacity, emergency running characteristics, and operational safety.

The certification confirms conformity with maritime standards such as SOLAS, IMO regulations, and other international shipping requirements.

Choose certified marine motors.  Request your non-binding quote for a new marine propulsion motor today. 
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Certified Marine Motors from Menzel

Menzel has been manufacturing and delivering industrial motors worldwide since 1927. Our products offer outstanding power density, energy efficiency, and durability. Upon request, our motors can be supplied with certifications from various classification societies, including:

  • DIN EN 60034
  • Efficiency class measurements (IE3, IE4, IE5)
  • Bureau Veritas (BV)
  • Registro Italiano Navale (RINA)
  • Lloyd’s Register (LR)
  • Det Norske Veritas (DNV)
  • American Bureau of Shipping (ABS)

Emergency Supply: Large Electric Motors Available from Stock

If you require an immediately available replacement motor, we are also your reliable emergency partner. Menzel maintains one of Europe’s most extensive inventories of large industrial motors. We stock medium- and high-voltage motors, low-voltage motors, squirrel-cage and slip-ring designs, and DC motors in numerous sizes—including special configurations.

Our comprehensive stock strategy and in-house machining capabilities enable exceptionally fast response times.