Power per litre
Divide generator watts by tank litres. Two listings we checked gave 15 and about 14 W per litre. Ask whether the figure is average or peak power; a peak figure makes a weak tank look strong.
No DramaBuyer guide · Industrial cleaning
What decides whether an ultrasonic cleaner works is transducer power for the volume of liquid, and listings print the tank litres large and the watts small, so two tanks of one size can clean very differently.

01
Divide generator watts by tank litres. Two listings we checked gave 15 and about 14 W per litre. Ask whether the figure is average or peak power; a peak figure makes a weak tank look strong.
Around 28 kHz gives harsh cavitation for carbon and heavy grease. 40 kHz is the general choice. Higher frequencies such as 80 kHz suit fine parts and soft metals that pit at low frequency.
Cavitation slowly erodes the tank floor above the transducers. Ask sheet thickness, SUS304 or SUS316, and whether transducer packs can be replaced without cutting the tank.
Oil floats, and parts lifted out through an oily surface come out dirty again. Ask for an overflow weir, a skimmer and a filter pump, often sold as options.
One tank leaves chemistry on the part. Multi-tank units add a rinse, a hot-air dryer and sometimes a lift, so nobody reaches into a hot bath.
02
Send these with the enquiry. Without them, any number a factory gives you is a guess dressed as a quotation.
03
| Require this | A pass looks like |
|---|---|
| Clean a basket of your own parts, soiled as they leave your process, with the proposed chemistry and time. | Parts meet the agreed water break, wipe or particle check, including inside blind holes. |
| Foil test: hang aluminium foil strips at several positions in the tank for a fixed time. | Foil is evenly perforated across the tank, with no dead corners from a failed transducer pack. |
| Run at full power and working temperature for a shift. | No generator alarm, and the bath holds the temperature band written in the contract. |
04
05
A spray parts washer. A tank big enough to hold the part burns heater energy and chemistry spray does not need.
Laser cleaning or dry ice blasting. Cavitation lifts loose soil; it does not strip coatings.
06
We name the kind of source, how many and when, and never the factory. Listed prices are asking prices, not landed cost. Where we do not hold a fact we say so: that is a GAP, not an estimate.
07
Every machine we source in this area is on the Industrial cleaning page. How a project runs, stage by stage, is on how it works, and what it costs is on pricing.
Straight answers
Mostly generator and transducer bonding. Get average power and tank thickness from both, then foil-test both.
Foil test, your parts cleaned and checked, generator nameplate against contract, heater, drain valve and earth connection.
A Declaration of Conformity under the machinery, low voltage and EMC rules, and a manual in your language. EMC weighs more here than on a spray washer.
Usually your company: your name goes on the cleaner or its papers, and you confirm the technical file exists.
Contact
Send a machine, a quotation you want checked, or a question. We reply with what we would look at first.
Sent
A person reads every message. You will hear back within one working day.
Not sent
Please email info@nodramachina.com directly and we will pick it up from there.