# DMG MORI DMU 55 H Twin

Hardware · `DMU 55 H Twin` · verification: source checked

The DMU 55 H Twin is a DMG MORI machine with two spindles that are permanently synchronized to each other, built for milling, turning and grinding in one setup. It has independent X, Y and Z axes with strokes of 580 mm, 750 mm and 500 mm respectively, and a scalable wheel magazine holding up to 214 tools per spindle. Its basic structure is made of GGG60 cast iron, and control and software alternatives are offered with SIEMENS.

## Specification

| Property | Value |
|---|---|
| Category | cnc mill |
| Travel X | 580 mm |
| Travel Y | 750 mm |
| Travel Z | 500 mm |

## Connected

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

## Safety

- Operating limit: maximum workpiece weight 400 kg.

## Study notes

- Workpiece envelope: maximum length 750 mm, width 580 mm, diameter 630 mm, height 570 mm.
- Maximum workpiece weight is 400 kg (882 lbs).
- Acceleration values are stated as 7 / 10 / 8 m/s², supported by low moving masses.
- Tool change chip-to-chip time is up to 2.9 s.
- Positioning accuracy is stated as 5 µm.
- Scalable wheel magazine holds up to 214 tools per spindle.
- Spindles are permanently synchronized to each other (Syncmot) for milling results.
- Basic structure and damping come from GGG60 cast iron.
- All heat-generating components are cooled, and the machine compensates for changing ambient conditions.
- Control and software alternatives are offered with SIEMENS; no matching controller entry exists in the reference list.
- Digitization is provided through CELOS X, plus DMG MORI technology cycles; MX Machining integrates milling, turning and grinding.

## Sources

1. [DMU 55 H Twin - Horizontal Milling - DMG MORI](https://en.dmgmori.com/products/machines/milling/horizontal-milling/h-twin/dmu-55-h-twin) (accessed 2026-10-25)

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