# DMG MORI ULTRASONIC 20 linear 3rd Generation

Hardware · `ULTRASONIC 20 linear 3rd Generation` · verification: source checked

The ULTRASONIC 20 linear 3rd Generation is a compact 5-axis simultaneous milling machine from DMG MORI that combines a high-frequency spindle with ULTRASONIC superimposition of tool rotation. The spindle oscillates the tool at amplitudes up to 15 µm through an HSK-E32 interface, which the document states reduces process forces by up to 50% compared with conventional machining. Linear drives move the X, Y and Z axes over strokes of 220 mm, 370 mm and 290 mm for machining workpieces up to Ø 220 x 283 mm.

## Specification

| Property | Value |
|---|---|
| Category | cnc mill |
| Travel X | 220 mm |
| Travel Y | 370 mm |
| Travel Z | 290 mm |
| Spindle max | 60000 rpm |
| Spindle taper | HSK-32 |
| Table load | 15 kg |

### Joints

| Name | Range min (°) | Range max (°) |
|---|---|---|
| A | -93 | 130 |

## Connected

- Manufacturer: [DMG MORI](https://machineschema.com/manufacturer/dmg-mori.md)

## Study notes

- ULTRASONIC technology is integrated via an HSK-E32 interface that superimposes tool rotation with amplitudes up to 15 µm.
- Document states process forces are reduced by up to 50%, feed rates increase, surface finishes reach Ra < 0.1 µm, and tool life increases depending on requirements.
- High-frequency spindles are listed as HSK-32 at 42,000 rpm standard, with an optional HSK-32 spindle up to 60,000 rpm; the spindle taper field records the HSK-32 spindle.
- Linear drives give acceleration up to 1.2 g; the machine has a FEM-optimized cast bed and a temperature management system.
- Maximum workpiece size is Ø 220 mm diameter by 283 mm height (9 in x 11 in).
- C-axis speed is 150 rpm as standard, with an optional 1,500 rpm C-axis.
- Control and software alternative stated in the document is SIEMENS; no matching controller entry exists in the reference list.
- Location accuracy/repeatability, rapid traverse rates and machine weight are not stated in the document.

## Sources

1. [ULTRASONIC 20 linear 3rd Generation - ULTRASONIC Machines - DMG MORI](https://en.dmgmori.com/products/machines/ultrasonic/ultrasonic-precision/ultrasonic-20-linear-3rd) (accessed 2026-10-25)

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