Ultrasonic presses
Five families from a 54 mm mounted head to a 6,000 N floor press — 15 to 36 kHz, 500 W to 4.5 kW, with five ways to control the weld.
From a mounted head to a six-kilonewton floor press
Five press families. The choice is driven by part size and the force the joint needs, and then by frequency — lower frequency for bigger parts, higher frequency for delicate ones.
| Model | Frequency | Power | Closing force | Stroke | Throat | Dimensions | Weight |
|---|---|---|---|---|---|---|---|
| AHG 500/1000 | 35 kHz | 500 / 1000 W | — | — | — | ø54 × 220 mm | 0.6 / 1.2 kg |
| MS 450 | 35 kHz | 500 / 1000 W | 450 N | 50 mm | 80 mm | 300 × 500 × 490 mm | 22 kg |
| MS 750 | 20 / 36 kHz | 1000 / 1500 W | 750 N | 100 mm | 150 mm | 360 × 575 × 1000 mm | 60 kg |
| MS 3000 | 20 kHz | 1000 – 4500 W | 3000 N | 100 mm | 275 mm | 410 × 685 × 960 mm | 100 kg |
| MS 3000/6000 | 15 kHz | 3000 / 4500 W | 3000 / 6000 N | 100 mm | 275 mm | 410 × 685 × 960 mm | 100 kg |
Generator supplied separately: 500×350×220 mm, 7.2–35 kg depending on power. Working tables from 200×300 mm on the MS 450 to 465×410 mm on the MS 3000. Final specification is confirmed against your application at quotation.
Choosing between them
A bare ultrasonic head, not a press. Mounted into your own fixture, jig or automation.
35 kHz · 500 / 1000 W · —
The bench press. Small assemblies, inserts, staking, laboratory and low-volume production.
35 kHz · 500 / 1000 W · 450 N
Deeper throat and more force. The general-purpose production press.
20 / 36 kHz · 1000 / 1500 W · 750 N
Floor press for larger parts and higher power. Five power options on one frame.
20 kHz · 1000 – 4500 W · 3000 N
15 kHz for the largest parts — lower frequency carries further across a big weld.
15 kHz · 3000 / 4500 W · 3000 / 6000 N
How the machine decides the weld is finished
This is the part that separates a welder from a press with a horn on it. You choose when ultrasonics start (trigger) and when they stop (weld mode) — and the right combination is what makes the process repeatable across a shift.
- Time — simplest; ultrasonics start a set time after the horn moves
- Force — start when a set contact force is reached; consistent regardless of part height variation
- Distance — start at a defined position
- Touch — start the instant the horn contacts the part
- Time — weld for a fixed duration. Simple, but blind to material variation
- Energy — weld until a set joule count is delivered. Compensates for material and moisture variation
- Weld distance — weld until the horn has travelled a set collapse distance
- Absolute distance — weld until the part reaches a defined final height. The best control for dimensional accuracy
- Peak power — weld until a power threshold is reached
The same press does four other jobs
Melting a moulded plastic boss over a second component to lock it in place — a metal bracket, a PCB, a lens.
Driving a threaded metal insert into a moulded boss. Far stronger than pressing in cold, and it does not stress the boss.
Reshaping a plastic feature around another part to capture it.
Joining two sheets or large mouldings at discrete points where a continuous weld is not needed.
Trimming sprues and gates cleanly without stressing the part.
Cutting and sealing synthetic fabric in one action, leaving an edge that cannot fray.
What are you welding?
Ultrasonic welding is decided by the parts — the resin, the wall, the joint and what the weld has to do. Send photos and drawings through the enquiry form and you get an engineered answer.