{"id":23834,"date":"2026-01-04T19:37:02","date_gmt":"2026-01-05T03:37:02","guid":{"rendered":"https:\/\/shengenfab.com\/?p=23834"},"modified":"2026-01-04T19:51:46","modified_gmt":"2026-01-05T03:51:46","slug":"how-to-select-the-right-tonnage-kn-for-a-servo-press","status":"publish","type":"post","link":"https:\/\/shengenfab.com\/en_gb\/how-to-select-the-right-tonnage-kn-for-a-servo-press\/","title":{"rendered":"How to Select the Right Tonnage (kN) for a Servo Press\uff1f"},"content":{"rendered":"
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Selecting the right tonnage is one of the most crucial decisions when choosing a servo press. If the press capacity is too low, the machine may not reach the needed forming force. This can reduce part accuracy and lead to premature tool wear. If the tonnage is too high, the system becomes more expensive. It also consumes more energy and reduces responsiveness to force control.<\/p>

Modern manufacturing depends on precision and efficiency to stay competitive. For this reason, engineers must match the press force to the real process needs. Proper matching enhances part quality and helps keep operating costs under control.<\/p>

This article explains how engineers and buyers estimate the required force. It also explains how to set safe margins. Finally, it reviews other technical factors that affect press performance in real production.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Understanding Tonnage in Servo Presses<\/h2>

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Before choosing a machine, you need to understand how tonnage actually works. This section explains what tonnage represents and how servo presses apply it differently.<\/p>

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What Tonnage Represents\uff1f<\/h3>

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Tonnage, measured in kilonewtons (kN) or metric tons, defines the maximum forming or pressing force a servo press can deliver. It indicates the amount of resistance the press can overcome when shaping, joining, or deforming a part.<\/p>

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However, many buyers misread this specification. Most presses list nominal tonnage, which represents the machine\u2019s maximum force at a specific stroke position \u2014 often near the bottom dead center (BDC). In contrast, the working force is what the press can maintain throughout the usable stroke range.<\/p>

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For example, a servo press rated at 20 kN nominal tonnage may only sustain that peak within the last 5 percent of its travel. If your forming process requires full pressure earlier in the stroke, the effective force could drop by 20\u201330 percent. That\u2019s why engineers should always confirm where along the stroke the rated force applies.<\/p>

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In simple terms, tonnage isn\u2019t just about \u201chow strong\u201d the press is \u2014 it\u2019s about how that strength is delivered during motion.<\/p>

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Peak Load vs. Continuous Load<\/h3>

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Another common misunderstanding is assuming the rated tonnage equals the machine\u2019s sustainable capacity. In reality, every servo press has two limits:<\/p>

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