Choosing filtration separation equipment for a workshop or production floor comes down to one question: what are you actually trying to remove? Solid particles suspended in liquid and floating oil on top of coolant are two very different problems, and the machines built to solve them are not interchangeable. This head-to-head compares a high-capacity industrial centrifuge dehydrator with a dedicated oil-water separator and cutting fluid skimmer. The two options sit on opposite ends of the price spectrum, so the right match helps you avoid overspending or underbuying.
Quick Verdict
If your shop needs to separate solid debris like metal filings, chips, and sludge from liquid in bulk, the TECHTONGDA centrifuge dehydrator is the heavy-duty route. If your priority is keeping cutting fluid clean by pulling floating oil out of the sump, the PreAsion oil-water separator handles that specific job and costs far less. Match the machine to the contaminant you deal with daily.
At a Glance
| Feature | TECHTONGDA Centrifuge | PreAsion Oil Water Separator |
| Price | USD 4,646.00 | USD 1,703.84 |
| Separation job | Solids from liquid | Oil from cutting fluid |
| Power | 220V, 3PH | 208-240V, 3PH |
Where Each Product Wins
- TECHTONGDA Centrifuge takes the lead when you deal with heavy solids. Its stainless-steel drum spins at 660 r/min and handles up to 110 lb per load, making it a strong match for metal filings, aluminum chips, and copper chips that need fast dewatering. The semi-automatic foot-switch unloading adds convenience for batch work.
- PreAsion Oil Water Separator wins on cutting fluid maintenance. It pulls floating oil off the surface, so the coolant lasts longer, tools stay accurate, and the work area is cleaner. The oil drainage line and cleaning valve keep the system simple to service.
Product Notes
TECHTONGDA Industrial Centrifuge Dehydrator
The TECHTONGDA Industrial Centrifuge Dehydrator uses a stainless-steel barrel that resists corrosion and rust, and its 660 r/min drum speed delivers a fast spin for separating liquids from metal filings, aluminum chips, copper filings, and other small hardware. With a 110 lb (50 kg) maximum capacity and a 22.8-inch drum diameter, it's built for volume. The foot-switch unloading saves handling time, and the semi-automatic control keeps the process straightforward. That capability comes at $4,646.00, a major investment that also requires a 220V three-phase hookup. It's not meant for fabric drying, so stick to industrial solids. This machine is the right pick when your daily workload includes batches of parts or chips that need quick dewatering.
PreAsion Oil Water Separator with Cutting Fluid Skimmer
The PreAsion Oil Water Separator focuses on a narrower but essential job: pulling floating oil off the surface of cutting fluid so the coolant keeps working longer. At $1,703.84, it's the lower-priced option here, and it's built for machine-tool work on 208-240V three-phase power. The oil drainage line lets you collect separated oil, and the cleaning valve removes sludge from the tank bottom. The trade-off is that its strength is coolant maintenance; it's not the tool for dewatering metal chips. Pick it when coolant life, tool life, and shop cleanliness are the priority.
Final Choice by Use Case
Choose the TECHTONGDA industrial centrifuge if you're doing biomass oil extraction or batch solid-liquid separation of metal parts and filings. Choose the PreAsion oil-water separator if you run machine tools and want to keep cutting fluid clean, extend tool life, and protect the working environment.
