| Required production capacity | Expected output per hour, operating hours, and planned production growth. | Compare quoted capacity using the same feed formula, pellet diameter, and operating conditions. Ask whether the figure refers to the pellet mill alone or the complete line. | Actual output varies with ingredients, moisture, pellet size, die design, and process settings; motor power alone does not establish production capacity. |
| Pellet size and feed type | Target pellet diameter, animal type, life stage, and feed formulation. | Confirm that suitable dies are available for the required product. Feed pellet diameters commonly vary from a few millimeters to around a centimeter, depending on the application. | Pellet dimensions affect feeding suitability and can influence processing rate and pellet quality. |
| Mill configuration | Flat-die or ring-die design, batch size, intended duty, and available floor space. | Flat-die machines are often used for smaller-scale production, while ring-die machines are commonly selected for higher-throughput commercial production. Confirm suitability with a feed trial. | Machine configuration affects operating scale, maintenance requirements, and how the mill fits into the production line. |
| Raw material preparation | Ingredient particle size, mixing uniformity, moisture, and the need for grinding or conditioning equipment. | Check whether the mill requires a separate grinder, mixer, conditioner, or moisture-control step to process the planned ingredients consistently. | Feed composition and preparation affect pellet formation, throughput, and finished-pellet quality. |
| Die and roller specifications | Die-hole diameter, die thickness, compression ratio, material, and replacement availability. | Ask for die recommendations matched to the feed formula and target pellet. Confirm expected wear, replacement procedures, and the availability of compatible parts. | Die and roller condition directly influence pellet formation and are important routine maintenance items. |
| Conditioning options | Whether the process uses dry conditioning, steam conditioning, or another suitable preparation method. | If steam conditioning is proposed, include the boiler, water treatment, controls, installation, and operating requirements in the evaluation. | Conditioning changes the feed before pelleting and can affect processing performance; the appropriate setup depends on the formula and production goals. |
| Power and site requirements | Motor rating, electrical supply, installation space, ventilation, and dust-management needs. | Verify electrical compatibility and site requirements with a qualified installer. Consider the power needs of the entire line, not just the pellet mill. | A suitable machine must match the facility’s utilities and layout to operate as intended. |
| Maintenance and support | Access to wear parts, maintenance instructions, operator training, and technical service. | Request a maintenance schedule and a list of critical spare parts. Check how routine die, roller, bearing, and drive-system servicing will be handled. | Planned maintenance helps manage wear-related downtime and supports reliable production. |
| Total cost of ownership | Purchase and installation costs, energy use, labor, consumables, maintenance, and expected operating hours. | Compare costs over a defined operating period and use realistic production assumptions. Include upstream and downstream equipment in the calculation. | The purchase price alone does not represent the cost of producing feed over time. |