What Is a Magnetic Coolant Separator?

Magnetic coolant separators are designed to clean cooling liquids of filings, chips, and other metallic impurities generated during the cutting process.
Coolant magnetic separators are designed primarily for use on grinding machines, other machine tools, and devices with water-based coolants or straight-cutting oils, to extend the life cycle of machine tools and cooling fluids. Magnetic Separator for grinding provides increased productivity with less downtime for machine coolant replacement. Magnetic coolant separator is the best solution to perform machining accurately due to the quality of the surface and the accuracy of the final dimensions.

Technical Specifications of Magnetic Coolant Separator


Model	Flow (L/min)	Voltage(V)	Power(W)	Water Intake	Outlet	A	B	C	D	E	F
CF-180Q	25	380	40	47	40*100	269	140	205	336	190	235
CF-300Q	50	380	60	47	40*100	340	140	205	470	310	355
CF-500Q	100	380	90	89	40*200	387	140	325	670	510	555

How Does a Magnetic Coolant Separator Work?

Coolant carrying iron particles flows from the grinding machine into the inlet of the magnetic coolant separator. As it passes over the magnetic drum, ferrous chips, iron powder, and fine grinding sludge are pulled onto the drum surface.
The cleaned coolant flows back to the machine tool coolant system. The collected sludge moves with the drum, passes through the rubber roller to remove extra coolant, and is scraped off by the scraper plate.
With fewer iron particles returning to the coolant tank, the process can help reduce marks on the workpiece surface, slow grinding wheel wear, and make the coolant last longer.

Features of Magnetic Coolant Separator

Removes ferrous sludge, fine chips, and small iron particles from coolant or cutting oil.

Suitable for water-soluble coolant and neat oil used in grinding, honing, and gear cutting.

Uses a rotating magnetic drum with ferrite or rare earth magnets to collect iron particles from the liquid flow.

Commonly used on centerless grinding machines, heavy stock removal grinders, honing machines, and gear-cutting machinery.

Can be installed before other filtration equipment to reduce the amount of ferrous particles entering the next filter stage.

Flow rate, inlet, outlet, voltage, motor position, and mounting size can be adjusted for different machine tool coolant systems.

Where Magnetic Coolant Separators Are Used

Magnetic coolant separators are used in machine tool coolant systems where water-based coolants or straight-cutting oils carry iron sludge, fine chips, and grinding particles. They are common in magnetic coolant filtration for processes that need repeated coolant circulation.
Common applications include:
Grinding machines
Centerless grinding machines
Heavy stock removal grinders
Honing machines
Gear-cutting machinery
Chip processing systems
Industrial coolant filtration equipment
During operation, the magnetic drum collects ferrous sludge from the coolant flow. The rubber roller and scraper then remove the collected material, like the dark grinding sludge shown on the separator surface. Cleaner magnetic coolant can return to the machine or pass into the next filtration stage.

How to Choose a Magnetic Coolant Separator

Based on Coolant Flow Rate

Check the coolant flow from your machine first. The separator should not be too small, or the coolant may back up at the inlet. For one grinder, the required flow is usually different from a shared coolant tank serving several machines.

Based on Particle Type

A magnetic coolant separator works best when the coolant contains iron powder, grinding sludge, or small ferrous chips. If your process also has aluminum chips, wheel dust, or other non-magnetic particles, you may need another filter after it.

Based on Coolant Type

Water-soluble coolant and neat cutting oil can both be used. You still need to check the liquid viscosity and how much sludge is produced during machining, because thick oil or heavy sludge can slow the flow.

Based on Installation Space

Before ordering, check the inlet height, outlet direction, tank size, voltage, and motor position. For OEM equipment or a modified coolant filtration system, photos or drawings help avoid fitting problems.