The Grégoire Besson half mounted ploughs are assembled with a simple bear frame. With the help of barrow really the acting forces on the frame can be greatly reduced. Because of their size (260 x 180 mm) there are only large sized barrows (SPSF 9 and SPSL 9) of double bear frame formation.

The single-wheel ploughs as well as ploughs belonging to SPER 8 type are assembled with 180 x 180 mm frames.
The SPER 7 type which is suitable for «light barrow» type is assembled with 150x150 mm securing frame.

The both parts of the frame (AV: front and AR: rear) have been formed in such a way that it is possible to assemble a new plough bottom on it.
As at the mounted ploughs every pit has a stay bolt, with the help of which they increase the effectiveness of locking and its life.