Stainless Steel 77L Ultrasonic Cleaning Machine 1200W 3000W Heater Digital Control

The ST77A/B raises the working volume to 77 litres while keeping the footprint compact enough for a service bay or a production aisle. The 550 x 400 x 350 mm tank was sized around the parts that fall between benchtop units and full industrial lines, such as cylinder heads from small engines, pump housings, gearbox covers, long hydraulic manifolds and racks of machined components. 1200 W of ultrasonic power and a 3000 W heater cut the dwell time per load, and the digital timer lets an operator set a fixed cycle so that two shifts produce the same result. The stainless body, integrated generator and lockable castors mean the machine can be moved between departments without an electrician on site.

• Balanced 77 litre tank: A 550 x 400 x 350 mm cavity covers parts up to half a metre long, which is the size range most repair and machining shops struggle to fit into a 30 or 50 litre bath.
• 1200 W ultrasonic output: Higher transducer density than the entry model shortens cycle times on greasy castings and stamped parts, and the output still backs down to 0 percent for delicate work.
• 3000 W rapid heating: The bath reaches 60 degrees Celsius in a fraction of the time needed by a small heater, which matters when several loads have to run before the end of a shift.
• Digital timer and temperature control: A front panel timer covers 0 to 60 minutes and the thermostat spans 30 to 110 degrees Celsius, so repeatable recipes can be written down and followed by any operator.
• 28 kHz and 40 kHz versions: The A model drives aggressive cavitation for rust, scale and burnt carbon, while the B model at 40 kHz reaches tighter clearances with less risk to machined finishes.
• Sweep frequency stability: The generator sweeps around the nominal frequency to avoid standing waves, so parts standing upright in a basket are cleaned evenly instead of only where the pressure antinodes land.

Model suffix A denotes the 28 kHz configuration and suffix B the 40 kHz configuration. Both versions share the same tank, heating system and generator platform.

At 77 litres the tank fits the middle of the market. Machine shops clean gearbox casings, cylinder heads, brake calipers, diesel injector bodies, valve blocks and welded frames before assembly. Maintenance departments use it for pump parts, heat exchanger plates, air motor components and bearing carriers during overhaul. Electronics and instrument makers run chassis, heat sinks, connector housings and metal stencils through a 40 kHz bath. Moulding plants clean ejector pins, hot runner parts and small inserts, and surface finishing shops use it to remove polishing compound before plating or anodising.

The machine is packed in a reinforced plywood case with the tank braced from the inside, the control panel protected by a foam face and the castors blocked to prevent load transfer in transit. Accessories include a stainless basket with handles, a fitted lid, a drain hose with clamp and an English manual. Factory testing covers a two hour loaded run, a heater ramp test, insulation resistance and a transducer sweep check, and each unit is photographed with its serial plate before dispatch. The one year warranty covers generator, transducer and heater faults, with video support and stocked spare parts.

Tell us the largest part you need to immerse and the cycle time you are targeting, and we will confirm the 77 litre configuration or quote the next size up.