GermanyHEWMotor technology exchange

1 Brand and Product Overview

GermanyHEW（Request Elektromotoren-Werke GmbH & Co. KG）It is a company with a history that can be traced back to1892A motor manufacturing enterprise with headquarters located in North Rhine, Germany-Hereford, Westphalia. Over the course of more than a century of development,HEWAlways focused on the research and production of industrial motors, its product positioning is not limited to large-scale manufacturing of standard models, but focuses on providing flexible and reliable motor solutions based on customers' specific application scenarios and performance requirements. From individual customization to small to medium batch production,HEWCapable of meeting diverse demands, its products have been applied in multiple industrial fields that have strict requirements for drive systems.

II List of main product types and technical models

HEWThe product line is based on three-phase asynchronous motors and extends to various variant products that are suitable for special environments, functions, or industries. The main product types can be summarized as follows:

Ø Standard three-phase asynchronous motor: a universal basic drive motor with an aluminum or gray cast iron casing.

Ø Single phase asynchronous motor: suitable for situations where only single-phase AC power is available.

Ø Brake motor: The non shaft extension end of the motor is integrated with a disc brake, used for quick stopping and position maintenance.

Ø Explosion proof motor（ATEX / IECEx）Suitable for potentially explosive gas environments (gas explosion-proof) or dust environments.

Ø Variable frequency speed regulation motor: optimized design for variable frequency power supply, suitable for wide range speed regulation applications.

Ø Submersible motor: Adopting a sealed design, it can operate in water for a long time (commonly seen in water pumps).

Ø Permanent magnet synchronous motor: has high power density and operating efficiency.

Ø Variable pole motor: achieved by changing the winding connection method2-3Fixed rotational speed.

Ø Motor with forced cooling fan: used in situations where high load cycles or low-speed operation require enhanced heat dissipation.

Ø Food industry and hygiene design motor: Made of stainless steel components and smooth surface, easy to clean and disinfect.

Corresponding specific technical model examples (model codes usually include information such as machine base number, pole number, protection level, explosion-proof mark, etc.):

Ø R3G 80M-2Standard three-phase motor, frame number80，2Extreme.

Ø REM 71K-4Single phase motor, frame number71，4Extreme.

Ø R3G 90L-4 B3Three phase motor with brake, base number90，4Extreme,B3Installation method.

Ø DCEx 100L-2Explosion proof three-phase motor, suitable for2Gas environment in the area.

Ø RDM. .ZSeries: A motor series designed specifically for variable frequency drives.

Ø R3G. .PSeries: Submersible Motor Series.

Ø RPM..Series: Permanent magnet synchronous motor series.

Ø R3G 132S-4/2Dual speed variable pole motor.

Ø R3G 160M-4 TF: Equipped with independent power supply cooling fan（TF）The motor.

Ø R3G-H..Series: Motor variants designed for hygiene requirements.

III Product Introduction and Core Technical Parameters

Using several representative products as examples:

Ø Explosion proof motor:

Introduction: This type of motor is designed for industrial environments with flammable and explosive gases or dust, such as chemical plants, refineries, and grain processing workshops. The core security principle lies inExplosion proof enclosure ": The motor housing is designed to be strong enough to withstand the explosive pressure caused by internal arcs or sparks, and to prevent the spread of explosive flames to the outside of the housing through precise joint surface gaps, thereby avoiding ignition of the surrounding environment.

Technical parameter example: to DCEx 100L-2For example, the model may include parameters such as rated power15kW, synchronous speed3000rpm（2Extreme), protection levelIP55Explosion proof markEx db IIB T4 GbInsulation levelFInstallation methodIM B3.

Ø Brake motor:

Introduction: A spring-loaded, electrically released disc brake is integrated into the rear cover of the standard motor. When the motor is powered off, the brake spring immediately acts, generating a braking torque to quickly stop the motor shaft; When the motor is powered on, the electromagnet attracts and overcomes the spring pressure to release the brake. This design is suitable for situations that require quick response and reliable maintenance, such as material lifting and conveyor belt fixed stop.

Technical parameter example: In addition to conventional motor parameters, key parameters include Braking torque (such as20 Nm）Braking response time and release voltage.

Ø Variable frequency speed regulating motor:

Introduction: To adapt to the output of the frequency converterPWMOptimize the design based on pulse width modulation waveform. The main measures include using insulation materials with better corona resistance to prevent damage from high-frequency voltage impact, and installing independent cooling fans. Because during low-speed operation, the air volume of the self cooling fan of the motor is insufficient, an independent fan can ensure the heat dissipation of the motor within the full speed range.

Technical parameter example: In addition to power and speed range, it will be specifically marked Insulation system level (such asResistant to variable frequency drive ", speed ratio (such as1:10）And independent fan voltage.

4 Core Features

based onHEWThe product positioning and technical solutions can be summarized as follows:

Ø Application adaptability: It can provide diverse standard product options and support customized adjustments based on specific load characteristics, installation space, and environmental conditions (temperature, humidity, medium).

Ø Structural reliability: The motor adopts a robust mechanical structure design, for example, the cast iron base model has high rigidity, which helps reduce operating vibration and noise, and adapts to longer operating cycles.

Ø Compliance with safety standards: Relevant product series strictly follow applicable international and regional standards, such as explosion-proof motors that comply withATEXandIECExInstructions provide convenience for user devices to enter the target market.

Ø Flexible production mode: capable of handling orders from a single prototype to hundreds of small batches, with relatively flexible response cycles, suitable for non-standard equipment matching or project-based needs.

5 Main application areas

HEWElectric motors, with their diverse designs, are commonly used in the following industrial fields and equipment:

Ø Material conveying and logistics system: Drive belt conveyors, roller conveyors, elevators, stackers, etc.

Ø Fluid machinery: As a power source for various industrial pumps, fans, and compressors, including clean water pumps, sewage pumps, and ventilation systems.

Ø Processing and mixing equipment: used for process equipment such as mixers, mixers, dispersers, extruders, etc.

Ø Lifting and Stage Technology: Applied to the walking and lifting mechanisms of bridge cranes and electric hoists, as well as the lifting and translation drive devices of theater stages.

Ø Special environmental applications: Used in industries such as chemical, pharmaceutical, food and beverage for mixing, conveying and packaging equipment with hygiene, corrosion or explosion-proof requirements.