STA Centrifugal Separators – Drum Centrifuges for Process Liquids
What is a centrifugal separator?
A centrifugal separator (also called a drum centrifuge) cleans process liquids such as coolant, emulsion, oil and wash water. The dirty liquid flows into a fast-spinning drum. Centrifugal force of up to 1,960 x g pushes even very fine particles – down to about 1 µm – against the drum wall, where they collect as compact, dry sludge. The clean liquid flows back to the machine tank. Because there are no filter elements, there are no filters to buy or throw away, and your fluids last much longer.
STA separators are made in Germany and come in five sizes: the compact NZ-50, the medium-size U-15 and S-15, and the fully automatic A-15 and A-25. E&W Industrial Service Asia supplies, installs and services them across Thailand and Southeast Asia.
Centrifuge Separator NZ-50
Small Size – NZ-50
- Power: 1,5 kW
- Rotor volume: 4,5 l
- Sludge capacity: 6 kg
- Volume flow: 70 l/min (4,2 m³)
- Acceleration: 950 x g
- Velocity: approx. 2500 rpm
Centrifuge Separator U-15
Medium size – U-15 Centrifuge Separator
The U-15 with its huge rotor and the 4kw direct drive a perfect solution to be placed at compact coolant system or directly used a machinery tanks whether in Bypass or continues cleaning for example of coolant, emulsion, oil- cleaning, wet vibrator finishing, Glass grinding process. Available as 2 phase or 3 phase separator.
- Power: 4 kW
- Rotor volume: 15 l
- Sludge capacity: 12 kg
- Volume flow: 120 l/min (7,2 m³)
- Acceleration: 1960 x g
- Velocity: approx. 3000rpm
Centrifuge Separator S-15
Medium size for harsh applications – S-15 Centrifuge Separator
Our S-15 Separator is operating at a noise level of only 70 decibels, is durable and robust design with the advantage of be able to separate solids down to 1µ and cover a flow rate which is between 5 l/min and 150 l/min.
Available as 2 Phase or 3 Phase separator in Steel / Aluminum or Stainless steel for harsh applications to cover a pH 1-14 and approximate 90°C.
- Power: 5,5 kW
- Rotor volume: 15 l
- Sludge capacity: 12 kg
- Volume flow: 150 l/min (9.0 m³/h)
- Acceleration: 1960 x g
- Velocity: approx. 3000rpm
S-15 sales pitch – download (PDF)
Centrifuge Separator A-15
Compact size – fully automatic Separator A-15
- Power: 5.5 kW
- Rotor volume: 12 l
- Sludge discharge: 15–20 kg/h
- Volume flow: up to 140 l/min (8.4 m³/h)
- Acceleration: 1,730 x g
- Velocity: approx. 3000 rpm (50 Hz) / 3600 rpm (60 Hz)
- Power supply: 400 V / 50 Hz
- Weight: approx. 230 kg
Centrifuge Separator A-25
Big size – fully automatic Separator A25
- Power: 15 kW
- Rotor volume: 40 l
- Sludge capacity: 40 kg/h
- Volume flow: 150/250 l/min (9/15 m³/h)
- Acceleration: 1.960 x g
- Velocity: approx. 3000 rpm
Semi manual centrifuges will be operated by time interval means when calculated time for the cake (sediment layer) has finished the centrifuge will be stopped.
Fully automatic centrifuges continue operate, but have a self-cleaning cycle which uncharged solid cake’s automatically and the restart.
Centrifuge Separator U-15 Compact System
Compact System – U-15 separator
We offer different compact systems (for example Compact System U-15), the Separator will be installed
on one /two basement tanks (dirt & clean tank) depending on the requirements,
submersible/centrifugal/membrane pumps supply the process liquid into the Centrifuge Separator & back
to the production machines. Additionally, a cooling tower guarantee the perfect temperature of the
coolant required., great performance on a small footprint
Power: 4 kW
Rotor volume: 15 l
Sludge capacity: 12 kg
Volume flow: 120 l/min (7,2 m³)
Acceleration: 1960 x g
For both semi manual or fully automatic separators, due to the long dwell time in the centrifugal field the separated solids are very compact and dry,
dry solid → less weight → less disposal cost
Frequently asked questions
What can a centrifugal separator clean?
Machining and grinding coolants and emulsions, cutting and honing oils, parts-washing fluids, vibratory finishing water, phosphating and degreasing baths, paint-shop water and glass-grinding water.
How fine does an STA separator clean?
Down to about 1 µm, depending on the model and the flow rate. The S-15, for example, works at 1,960 x g and handles up to 150 l/min.
What is the difference between semi-manual and fully automatic separators?
Semi-manual models (NZ-50, U-15, S-15) collect the sludge in the drum, which is emptied by hand at set intervals. The fully automatic A-15 and A-25 discharge the sludge by themselves, so they suit continuous production – the compact A-15 for single machines and smaller systems, the A-25 for larger systems.
Can I test a separator before buying?
Yes. E&W offers test and rental units in Thailand. If you buy a new separator within one year, the test fee is credited back to you.
Do you provide service and spare parts in Thailand?
Yes. Our team in Bangkok handles installation, operator training, repairs, overhauls and genuine STA spare parts.
See STA separators in use
Read how our customers use STA centrifugal separators:
Spare Parts / Documentation
Repair/ Overhaul
Testing/ Rental
The efficiency and reliability of our STA -separators can be tested, our testing period is limited, once the testing period end the Separator can be returned or can be rented.
The testing is free of charge however we allow us charge a small fee for transportation, cleaning and inspection, if any customer consider to purchase a new separator from us within the period of 1 year, the testing fee will be reimbursed in form of a credit note.
Repair/ Overhaul
Spare Parts / Documentation
Testing/ Rental
The efficiency and reliability of our STA -separators can be tested, our testing period is limited, once the testing period end the Separator can be returned or can be rented.
The testing is free of charge however we allow us charge a small fee for transportation, cleaning and inspection, if any customer consider to purchase a new separator from us within the period of 1 year, the testing fee will be reimbursed in form of a credit note.
