baler air handling systems Machinex BALER When selecting a baler you need to review the full selection of materials the you want to bale, the physical size and density of the material and the amount of material that you need to bale. This information will help set up the criteria for the proper baler for your application. Balers are typically rated by through-put (tonnes per hour capacity) and bale chamber size. For instance, if you want to bale a high volume of cardboard you would need a wide mouth baler with enough displacement "under load" to keep up with your volume. If you want to bale paper trim fed from an air handling system, you would only require a less expensive narrow chamber horizontal baler that has ample displacement under load to keep up with your production.