I need a structural engineer

I have a 5.6 metre simply supported 180UB22.2 universal beam in a home workshop and want to know what the safe working load (point load in kgs) is at the centre of the beam. The weight will be supported by a girder trolley running along the lower flange. Also, the SWL 1.4m from the end support (i.e. approx. 1/4 the length of the beam)