The unified models Astra BM 19, BM 20 and BM 21 were equipped with a 1-seat cabin. The range is unified with BM 12 / BM 16 models, but had a larger carrying capacity and 6×4 or 6×6 chassis.
Externally, the models can be distinguished by a windshield having a reverse inclination. Typically, the cab was located to the right of the engine, but there were versions with a left cab arrangement for some markets.
Mercedes or AIFO engines were used. Both have a power of 260 hp. The gearbox is 9-speed unsynchronized or 10-speed ZF. BM20 – 10 ton 6×4 dump truck, BM21 – its version with a 6×4 chassis.
Astra BM20 with the full cab