Rubber centre hold down bars are predominately used for clamping down the centre of tensionable screen media such as rubber screen cloths or polyurethane screen mats. They are made from a steel backed rubber bar that is 50mm thick overall with a 42mm thick layer of rubber and 8mm thick mild steel plate, this centre hold down bars are 75mm wide and the length is usually equal to length of the mat or cloth they are clamping down. The centre bars are drilled with fixing holes as required and cored to ensure there is enough clearance to get a socket of the right size onto the fixing size specified.
