The Uni side mowers of the USM series work with a lateral offset next to the tractor unit as a rear-mounted unit in standardised three-point hydraulics. Working widths from 1.50 m to 2.60 m are available. The USM 15 - 26 Uni-side mowers are designed for medium and heavy tractors.
| Technical Data USM | 15 | 18 | 21 | 26 | |
| Working width | m | 1,50 | 1,80 | 2,10 | 2,60 |
| Total width | m | 3,45 | 3,85 | 4,15 | 4,65 |
| Drive power from | kW (HP) | 30 (41) | 50 (68) | 60 (81) | 65 (89) |
| Number of flail blades | Pieces | 12 | 15 | 18 | 24 |
| Weight basic unit | kg | 900 | 950 | 1150 | 1250 |
| Three-point linkage | Cat. | II + III | II + III | II + III | II + III |
| PTO-speed | rpm | 540 | 540 | 1000 | 1000 |
| Side shift | m | 0,60 | 0,60 | 0,60 | 0,60 |
| Diameter sinsing roller | mm | 170 | 170 | 170 | 170 |