Compliance
The industrial solid bowl centrifuge is an economical solution for separating solids from liquids where removal of fines is important for recycle and reuse goals- adhering to ISO-14001 standards.
Low Maintenance
The solid bowl centrifuge provides efficient and continuous operation with low maintenance requirements.
Health & Safety
The industrial solid bowl centrifuge offers consistent, reliable operation over long lifecycles.
Value
  • No consumable media
  • No special pumps
  • High performance separation for all types of particles, metallic, ferrous, non-ferrous, and non-metallic
  • Prolongs coolant and tool life
  • Improves surface finish of the component part
  • Minimizes hauling of waste coolants and water

Engineered for metalworking shops, machining centers, and wastewater systems where precision and uptime matter.

When you’re managing metal-cutting fluids, quench tanks, or wastewater streams, fines and tramp solids reduce tool life, degrade surface finish, and drive frequent disposal expenses. PRAB’s industrial solid bowl centrifuges apply high-G separation to keep fluids clean and reclaimable. So you spend less on new coolant, fewer hours on housekeeping, and face fewer regulatory headaches.

Why Choose a PRAB Centrifuge?

  • No consumables required – No filter bags or media to replace, reducing recurring costs.

  • Fine-particle separation – Captures metallic, non-metallic, ferrous, and non-ferrous solids, down to 10 microns in many applications.

  • Low maintenance & long life – Designed for continuous heavy-duty service with minimal moving parts and straightforward clean-out.

  • Versatile integration – Available as manual, semi-automatic, or fully automatic units; fits as a standalone or into a larger fluid-recycling system.


Solid Bowl Centrifuge Applications

Ideal for:

  • Coolant reclaim from machining sumps, quench tanks, and wash systems
  • Metal chip-processing operations where coolant reuse is critical
  • Pretreatment baths (such as phosphating) need sludge removal and process temperature control
  • Industrial wastewater treatment streams where solids removal enables discharge compliance

How It Works

Feed liquid enters the high-speed rotor, where centrifugal force drives heavier solids toward the wall, while the clarified fluid rises and exits. Solids are compacted in the bowl until discharged (manually or automatically), while clear liquid returns to the process or is recycled.

Models & Flow Rates

Performance-Driven Benefits

  • Extend coolant life and reduce new fluid purchase by 50 %+ (typical with full-system integration)
  • Lower waste-hauling and disposal costs by up to 90% when paired with a full recycling system.
  • Improve part finish and extend tool life by maintaining cleaner fluids
  • Achieve environmental and regulatory goals—ISO-14001, discharge limits, and zero liquid discharge (ZLD) when properly configured

PRAB Solid Bowl Centrifuge Benefits and Features:

  • Removes ferrous and non-ferrous metals
  • Prolongs coolant and tool life
  • Removes particulate down to the 10 micron level
  • Improves the surface finish of the part
  • No consumable media is required, adhering to ISO-14001 standards
  • Minimizes hauling of waste coolants and water
  • Complete with reusable liner
  • Manual or semi-automatic
  • No special pumps as are necessary for feed or discharge
  • Suitable for centrifugal filtering of oils and water-based coolants
  • Available as a stand-alone unit or can be incorporated into a customized centrifuge filtration system
  • Flow rates up to 20 gpm working at 900 times the force of gravity

PRAB’s liquid/solid bowl centrifuge is designed exclusively for industrial use in the following applications:

  • Grinding applications
  • Vibratory deburring
  • Polishing and lapping
  • Separation of  zinc and iron phosphates
  • Honing
  • Sawing
  • Pre-filtration
  • Rolling mills
  • Tube mills
  • Water jet cutting
  • De-scaling operations
  • Wire drawing
  • Parts washers
  • Quench tanks
  • Precious metals recovery

Manual Centrifuge

PRAB’s solid-bowl manual-clean industrial centrifuge is designed exclusively for industrial use. Process liquid is either pumped or gravity-fed to the centrifuge inlet. Process solids are centrifugally separated from the liquid phase and collected in the rotor, which has an easily removable, flexible liner. The entire clean-out process can be completed in as little as 5 minutes with a spare liner included.

Model Flowrate Bowl Volume
CL-50
15 GPM
1.3 Gallons
CL-80
20 GPM
2.6 Gallons

PRAB Semi-Automatic and Automatic Solid Bowl CentrifugesSemi-Automatic Centrifuge

Using no filters or consumables and very few moving parts, the feed enters the dirty liquid inlet and progresses upward through the rotor body. Centrifugal force is applied to the liquid stream in the main body of the rotor, causing solid particulate to move toward the rotor wall. Solids are deposited at the rotor perimeter while clean liquid overflows through the top of the rotor. The clean overflow discharges at atmospheric pressure via gravity through the clean liquid outlet. Solids deposited on the rotor are compacted by centrifugal force and allowed to accumulate until they are removed during the cleaning cycle. The operator manually initiates the clean cycle.

Model Flowrate Bowl Volume
CL-50SA
12 GPM
1.6 Gallons
CL-100SA
25 GPM
2.6 Gallons
CL-150SA
50 GPM
4 Gallons

 


Automatic Centrifuge

Using no filters or consumables and very few moving parts, the feed enters the dirty liquid inlet and progresses upward through the rotor body. Centrifugal force is applied to the liquid stream in the main body of the rotor, causing solid particulate to move toward the rotor wall. Solids are deposited at the rotor perimeter while clean liquid overflows through the top of the rotor. The clean overflow discharges at atmospheric pressure via gravity through the clean liquid outlet. Solids deposited in the rotor are compacted by centrifugal force and allowed to accumulate until they are automatically removed during the pre-set cleaning cycle.

Model Flowrate Bowl Volume
CLA-100
25 GPM
2.6 Gallons
CLA-150
40 GPM
4 Gallons

For operations where a standard, lined-bowl centrifuge is not sufficient, PRAB offers specialty units.


316L Automatic Centrifuge

With no filters or consumables and very few moving parts, the feed enters the dirty liquid inlet and rises through the rotor body. Centrifugal force is applied to the liquid stream in the main body of the rotor, causing solid particulates to move toward the rotor wall. Solids are deposited at the rotor perimeter while clean liquid overflows through the top of the rotor. The clean overflow discharges at atmospheric pressure via gravity through the clean liquid outlet. Solids deposited in the rotor are compacted by centrifugal force and allowed to accumulate until they are removed during the preset automatic cleaning cycle. All wetted parts are made of 316L stainless steel.

High-Speed Stacked Disc Centrifuge

The feed is introduced into the rotating centrifuge bowl from the top and accelerated by a distributor before entering the disc stack. It is between the discs that the separation takes place. The water and heavier solids are forced towards the bowl wall, where the solids accumulate and the water proceeds over the top disc to a clean outlet. The light phase moves towards the center and leaves the bowl through an open outlet (oil discharge). The machine can have a manual or automatic solids-cleaning cycle, depending on the unit selected.

PRAB conducts comprehensive sample testing to develop a precise understanding of the unique characteristics of your mixed solution and its industrial applications.

This test determines the correct centrifuge system design and capacity to optimize the filtration process within your facility.

To receive a free test, contact us today at (800) 968-7722.

Guardian Coolant Recycling Systems | Prab.com
To discuss your custom application

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