The SL90 is equipped with a 0.4 m³ bucket, delivering a maximum bucket digging force of 58 kN and a maximum arm digging force of 40 kN. It is powered by a QSF2.8 engine producing 53 kW at 2200 rpm and operates at a system pressure of 27.5 MPa. The machine features a maximum gradeability of 35° and a swing speed of 0–12 rpm, with overall dimensions of 6529 × 2215 × 2630 mm. It offers a maximum digging height of 7050 mm, a maximum dumping height of 5188 mm, a maximum digging depth of 4015 mm, and a maximum digging radius of 6540 mm. Balancing substantial bucket capacity with a flexible operating range, it is suitable for earthwork excavation, site leveling, and general construction projects.