Magnetic Conveyors vs Magnetic Drum Separators: Which Does Your Process Need?
Magnetic technology is widely used in machining operations to handle ferrous contamination. However, two products that are sometimes confused are Magnetic Conveyors and Magnetic Drum Separators. Both use magnetic force, and both can be used around machining coolant systems, but they perform very different functions. A Magnetic Conveyor primarily transports ferrous chips away from the machine, while a Magnetic Drum Separator removes fine ferrous contaminants from coolant. Understanding this distinction helps manufacturers select the correct equipment for their machining process.
What Is a Magnetic Conveyor?
A Magnetic Conveyor is a chip-handling system designed to continuously remove and transport ferrous chips generated during machining. Magnets positioned within the conveyor attract ferrous chips and carry them along the conveyor surface toward the discharge point.
Magnetic Conveyors are particularly suited to short, broken, and powdery ferrous chips generated in applications such as:
- Broaching.
- Gear shaping.
- Milling.
- Machining of steel components.
- Machining of cast-iron components.
Lex Technoaid Magnetic Conveyors can be configured with rare-earth magnets, ferrite magnets, or a combination depending on the application.
What Is a Magnetic Drum Separator?
A Magnetic Drum Separator performs a different function. Instead of transporting chips away from the machine, it separates fine ferrous particles from machining coolant. Contaminated coolant passes through the magnetic separation zone where ferrous particles are attracted to the rotating drum and removed from the coolant.
Magnetic Drum Separators are commonly used in:
- Grinding.
- Honing.
- CNC machining.
- Other processes generating fine ferrous contamination.
They can also be used as the first filtration stage before finer coolant filtration equipment.
Magnetic Conveyor vs Magnetic Drum Separator
The easiest way to understand the difference is to look at what each system is designed to handle.
Magnetic Conveyor
Primary purpose: Chip transportation.
Best suited for:
- Short ferrous chips.
- Broken chips.
- Powdery ferrous chips.
- Continuous chip removal from machines.
The main objective is to move chips from the machining area to a collection or discharge point.
Magnetic Drum Separator
Primary purpose: Coolant filtration.
Best suited for:
- Fine ferrous particles.
- Grinding fines.
- Metallic sludge.
- Ferrous contaminants suspended in coolant.
The main objective is to remove magnetic contamination before cleaner coolant is returned to the process or sent to another filtration stage.
When Should You Use a Magnetic Conveyor?
A Magnetic Conveyor should be considered when the main problem is continuous removal of ferrous chips from the machine. For example, broaching or gear-shaping operations may generate short ferrous chips that need to be removed continuously to avoid chip accumulation around the machining zone. Magnetic conveying can also be useful when chips are mixed with coolant because the conveyor configuration can allow coolant to drain back toward the machine or coolant system while the chips are discharged separately.
When Should You Use a Magnetic Drum Separator?
A Magnetic Drum Separator should be considered when the primary requirement is removing fine ferrous contaminants from coolant. This is especially relevant for grinding and honing operations where contaminants may be much finer than conventional machining chips. Removing this contamination before fine filtration can reduce the quantity of ferrous material reaching downstream filter stages.
Can Magnetic Conveyors and Magnetic Drum Separators Be Used Together?
Yes, depending on the process. A manufacturing line can generate both larger ferrous chips and fine magnetic contamination.
In such applications:
Machine → Magnetic Conveyor → Coolant Collection → Magnetic Separation / Filtration → Clean Coolant Return
The Magnetic Conveyor handles chip evacuation while the coolant filtration system deals with the finer contamination carried by the coolant. The exact system arrangement should be designed according to chip type, coolant flow, contaminant load, and machine configuration.
What Should Be Checked Before Selecting a Magnetic Conveyor?
Before selecting a Magnetic Conveyor, manufacturers should evaluate:
- Workpiece material.
- Whether the chips are ferrous.
- Chip size and shape.
- Quantity of chips generated.
- Whether chips are wet or dry.
- Coolant or oil carryover.
- Machine discharge height.
- Available installation space.
- Required conveyor inclination.
- Desired discharge arrangement.
These parameters help determine whether a Magnetic Conveyor is suitable or whether another chip conveyor design would perform better.
Magnetic Conveyors from Lex Technoaid
Lex Technoaid provides Magnetic Chip Conveyors for handling ferrous chips generated in operations such as broaching, gear shaping, and milling. Depending on the application, Magnetic Conveyors can be designed using rare-earth magnets, ferrite magnets, or a combination of both. Conveyor configuration, width, and inclination can be customized according to the machine layout and chip-handling requirements. For applications where the requirement is coolant filtration rather than chip transportation, Lex Technoaid also provides Magnetic Drum Separators and customized coolant filtration systems.
Not sure whether your application requires a Magnetic Conveyor, Magnetic Drum Separator, or a combined chip-handling and coolant-filtration solution?
Contact marketing@lextechnoaid.com or call +91 99166 98105 to discuss your machining and chip-handling requirements with Lex Technoaid.