55 KW 1000 RPM ELECTRIC MOTOR

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Introduction

The 55 kW 1000 RPM electric motor is a powerful industrial-grade machine designed for applications that require high torque at lower rotational speeds. With a rated power of 55 kilowatts and a constant speed of 1000 revolutions per minute, this motor delivers robust performance, long-term reliability, and energy efficiency. It is widely used in environments where continuous operation and mechanical strength are key requirements.

Technical Specifications

This three-phase asynchronous (induction) motor is engineered for tough operating conditions and is typically built with the following features:

  • Power Output: 55 kW

  • Speed: 1000 RPM

  • Voltage Range: 380V – 690V

  • Frequency: 50 Hz / 60 Hz

  • Insulation Class: F or H (for high-temperature resilience)

  • Protection Class: IP55 (standard), optional IP56/IP65 for harsh environments

  • Cooling System: IC411 (Totally Enclosed Fan Cooled – TEFC)

  • Mounting Options: B3 (foot), B5 (flange), or B35 (combined)

  • Efficiency Class: IE2, IE3, or IE4 (on request)

These motors are also available with integrated PTC thermal sensors and vibration monitoring options for predictive maintenance.

Common Applications

Due to its high torque and controlled speed, the 55 kW 1000 RPM electric motor is commonly used in:

  • Heavy-duty conveyors in mining or cement plants

  • Water and wastewater treatment systems

  • Large-scale compressors and blowers

  • Industrial agitators, mixers, and crushers

  • Hydraulic power units and press systems

  • Sawmills, grain mills, and industrial processing machines

Its lower RPM operation helps extend the life of connected equipment and reduces mechanical stress.

Energy Efficiency & Cost Savings

Equipped with energy-optimized windings and laminated cores, the 55 kW motor minimizes electrical losses, reducing operational costs. IE3 and IE4 variants significantly improve energy efficiency, meeting international energy-saving standards and government regulations.

When paired with a Variable Frequency Drive (VFD), the motor allows for soft start/stop and precise speed control, contributing to both mechanical longevity and reduced electricity bills.

Durability & Construction

Built with a high-grade cast iron or aluminum body, these motors offer excellent resistance to impact, corrosion, and harsh working conditions. Bearings are selected for long life, and the rotor is dynamically balanced for smooth, vibration-free operation.

Sealed terminals and advanced gasket systems ensure protection against dust and moisture. With proper maintenance, these motors can perform continuously under full load for many years.

Maintenance & Lifecycle

The 55 kW 1000 RPM motor is designed for minimal maintenance. Typical service includes:

  • Routine bearing inspection and lubrication

  • Cleaning of cooling fins and fan covers

  • Electrical insulation resistance testing

  • Periodic thermal and vibration checks

With good maintenance practices, these motors can operate efficiently for over 15 years in industrial settings.

Conclusion

The 55 kW 1000 RPM electric motor stands as a reliable and efficient choice for industries requiring powerful, steady, and low-speed operation. Its high torque capability, robust design, and energy efficiency make it suitable for even the most demanding environments.

You can access all motors from DRG Motor.