Flux F 457 | The Most Powerful Commutator Drum Pump Motor

• Motor type: F 457, single-phase, brushed commutator motor, for safe area use 

• Power supply: 110 V or 230-240 V (50–60 Hz) (100 V and 120 V available on request) 

• Ingress protection: IP 24 

• Power rating: 800 W 

• Duty cycle: S1, continuous operation 

• Housing type: Single-wall, internally cooled, double insulated (Class II) 

• Housing material: Polypropylene 

• Cable length: 5 m (standard) 

• Plug: UK 3-pin adaptor included for 230 V motor 

• Weight: 4.0 kg 

• Speed control: Optional – see F 457 EL model with stepless, infinitely variable speed control 

• Thermal monitoring: Integrated 

• Optional features: Low-voltage protection, no-volt release 

• Pump options: Use with all F 400 and F 500 series models 

Firstly, the F 457 stands out as the most powerful motor in Flux’s electric commutator motor lineup, making it the go-to option for users requiring high flow rates or discharge pressure. Furthermore, its high torque rating and 800 W output provide sufficient power for handling viscous and high density media, plus for pumping longer vertical and horizontal distances. The F 457 can be used with all F 400 and F 570 series pump tubes, however it should be used in safe areas only – see model F 460 Ex for use in Zoned areas containing potentially flammable vapours. In addition, it is ideal for use with F 426 mixing pumps and larger, 50 – 100 mm diameter, high performance F 430 IBC pumps. 

Unlike the standard fixed-speed models, the F 457 EL variant includes electronic stepless speed adjustment, enabling precise control over flow rate during filling, dosing, or batch dispensing operations. Additionally, this flexibility is useful in sensitive processes where foaming or excessive aeration is a concern. 

From a design perspective, the IP 24 polypropylene housing is chemically resistant and tough enough to withstand impacts and heavy-duty use in industrial environments. Furthermore, the recessed pump driver and controls are protected from accidental damage. In addition, options are available for single-phase power supplies from 100 – 240 V, with globally recognised safety approvals. Its internal cooling fan maintains consistent airflow across motor components, thereby reducing the risk of overheating and ensuring a long operational life. However, this motor should not be used in environments subject to corrosive fumes – see alternative model F 458. 

F 457 is the universal workhorse of the Flux motor range –  it’s high power output covers a huge range of drum and IBC pumping applications. In addition, this motor is a serviceable design – replacement brushes and bearings are available from UK stock for ease of maintenance. Whether deployed in plant operations or mobile service systems, the F 457 delivers exceptional reliability and flexibility, even under heavy workloads. 

Selecting the right drum pump motor depends on the following factors: 

• Available power supply 

• Duty cycle 

• Liquid viscosity and density 

• Transfer distance (horizontal and vertical) 

• Desired flow rate and discharge pressure 

• Ambient and liquid temperatures 

• Environmental considerations 

• Certification and approvals required 

• Will the motor be used in a safe area, or hazardous area, ie. are potentially flammable vapour – air mixtures present? If yes, an ATEX certified motor will be required eg. F 460 Ex or FBM 4000. 

• Is the motor destined for use in a food production environment? If yes, consider F 458 totally-enclosed motors. 

• Are corrosive fumes present? If yes, consider F 458 totally-enclosed motors. 

• Is it important that no carbon dust is released into the local environment? If yes, consider F 458 totally-enclosed motors. 

• Is noise a concern? If yes, consider FBM 4000 brushless motors. 

Considering these factors will help you to choose the most suitable motor for your application. 

• Transferring low to high viscosity fluids from < 1 – 30,000 mPas (depending on pump tube) 

• Safe area use with non-flammable liquids and fluids with flashpoint >50 deg C  

• High volume transfer, or continuous duty processes where high throughput is needed 

• Handling fluids that do not release corrosive fumes. 

Both F 457 and FEM 4070 are IP 24 ingress protected electric AC commutator motors, for use with drum or IBC pumps. They are designed for use in similar environments, for example safe areas without the presence of excessive moisture, corrosive fumes, or flammable vapours. Furthermore, both motors are suitable for continuous operation. The key differences in their specifications and focus is outlined below: 

The Flux F 457 drum pump motor is a single-phase, AC electric commutator motor, designed to deliver rotational torque directly to the pump shaft. An AC commutator motor is a type of electric motor that runs on alternating current (AC) but incorporates a commutator and brushes, similar to a DC motor. Furthermore, it is designed to combine the benefits of AC power supply with the torque characteristics of DC motors.  

Key components: 

Stator: Produces the magnetic field, typically using laminated iron cores with AC field windings. 

Rotor (Armature): A rotating component with windings that carry current and interact with the stator’s magnetic field to produce torque. 

Commutator: A segmented, rotating copper ring that switches the current direction in the armature coils, thereby enabling continuous torque in one direction. 

Brushes: Stationary carbon elements that deliver current from the external AC source to the rotating commutator. 

• AC Power Supply: Alternating current is applied to the motor through the brushes. 
• Synchronized Current Reversal: Both the stator and rotor receive AC, and the commutator ensures that the direction of current in the armature windings is always reversed in sync with the AC input. 
• Torque Generation: The interaction between the magnetic field from the stator and the current in the rotor creates a force (Lorentz force) that produces torque. 
• Unidirectional Rotation: The commutator maintains unidirectional torque output despite the reversing nature of AC, enabling continuous rotation. 
• Internal fan ventilation system pulls ambient air through a directed airflow path, effectively cooling the internal components and maintaining thermal stability, even during extended operation. 
• Optional Speed Control: The F 457 EL motor is fitted with a manually adjustable, rotary variable speed control. Consequently, this allows the user to vary motor speed (and thus flow rate) by varying the electrical frequency sent to the motor. F 457 can run at high speeds of up to 10,000 RPM. 
• Optional no-volt release: Prevents unintended start-up in the event of a power failure and remote power reset. Not suitable for use with batch filling systems, or remote start-stop switches. 
• The F 457 drum pump motor is a high torque motor, designed for continuous duty and high flow (or high pressure) applications. Furthermore, it can be used with viscous, or high density fluids and has features and options to enhance safety and process control. Designed and 100% manufactured in our factory near Stuttgart, Flux drum pump motors lead the way for quality and reliability. Consequently, this drum pump motor is suitable for most common drum and IBC pumping applications, making it a reliable, long-term asset for efficient fluid handling. 

• The most powerful Flux commutator motor (800 W) for fast liquid transfer 

• Various power options available: 230-240 V, 120 V, 110V 

• Optional speed control (F 457 EL) for process flexibility 

• Overload protection and optional no-volt release for operator safety and remote operation 

• Suitable for extended duty operation – marked S1. 

• IP24 ingress protection 

• Compatible with all Flux 400 and F 570 Series pump tubes 

• Low-noise operation, with high torque output 

• All parts available to buy as spares 

• Engineered, manufactured and tested in Germany 

Explore our full range of Flux drum pump motors 

Learn more about Flux 400 Series pump tubes