Digital guide
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Kollmorgen M-203-S-23
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Product Name: Goldline M-203-S Medium Inertia Permanent Magnet Brushless Servo Motor
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Product Introduction: Goldline M-series is the medium-inertia counterpart to the low-inertia B-series. M-203 is a frame size ~NEMA 34–42 equivalent, offering smoother low-speed operation and better match to higher-inertia loads. Used with BDS5, SERVOSTAR, or S300 drives.
Detailed content
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Key Specifications (M-203 typical):
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Continuous Stall Torque (Tc): ~3.3–4.0 Nm (varies by winding)
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Peak Torque: ~10–12 Nm
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Rated Speed: 3000–5000 rpm (winding dependent)
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Rated Power: ~0.7–1.2 kW
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Voltage: 230 VAC (325 VDC bus) or 480 VAC (some windings)
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Feedback: Resolver (std “S” = resolver; “-23” = connector/lead config)
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Insulation: Class H (180 °C)
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Protection: IP65 with shaft seal
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Thermostat: Built-in normally-closed thermal protector
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Construction: Medium-inertia rotor with rare-earth magnets; aluminum/cast iron end bells; resolver at rear.
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Application: Conveyors, rotary indexers, printing rollers — where load inertia is comparable to motor inertia.
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Notes: Suffix “-S-23” defines shaft type (smooth or keyed), connector style, and lead length — consult original order code table.





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