I don't know what might constitute excessive weight for that table, but, it is generally the case that too much weight will cause excessive wear of the thrustplate and the ball at the end of the spindle that rests against the thrustplate.
Too much weight also could cause excess transmission of bearing noise to the platter. There are some turntable designs which go to extraordinary measures to reduce the weight on the bearing to reduce noise transmission. Such measures include magnetic levitation, cushion of air from a pump, etc.
Too much weight also could cause excess transmission of bearing noise to the platter. There are some turntable designs which go to extraordinary measures to reduce the weight on the bearing to reduce noise transmission. Such measures include magnetic levitation, cushion of air from a pump, etc.