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Kollmorgen 6SM77K-3.000
Product Name: 6SM Synchronous Brushless Servo Motor, 77 mm Frame, 3000 rpm
Product Introduction:
6SM77K-3.000 is a Seidel-origin Kollmorgen 6SM permanent-magnet synchronous servo motor. “77” is 77×77 mm square flange, “K” is high-torque winding, “3.000” is 3000 rpm rated speed. Used in mid-power machine axes.
Detailed content
Technical Specifications:
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Rated Power: 2.7 kW
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Rated Speed: 3000 rpm
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Rated Torque: 8.0–11.0 Nm (source-dependent by winding; K-variant high-torque ~11 Nm, alternate catalog 8 Nm)
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Standstill Torque: ~3.5–11 Nm (variant dependent)
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Peak Torque: 3× standstill
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Rated Current: 6.0 Arms
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Peak Current: 13.5–24 A RMS
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Voltage Class: 400/480 VAC (DC bus 560–600 V)
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Rotor Inertia: 0.8–1.2×10⁻⁴ kg·m² (no brake)
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Insulation: F (155 °C)
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Protection: IP64/IP65
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Shaft: 19 mm keyed (smooth optional)
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Feedback: resolver standard, encoder optional
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Brake: 24 VDC optional (-G)
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Weight: 6–8 kg (no brake), 8–10 kg (brake)
Functional Features:
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NdFeB magnets, low cogging stator
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6-pole rotor, resolver commutation
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100 °C winding thermostat
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Direct retrofit for ServoStar CD/S300/S700
Working Principle:
Stator 3-phase field rotates under drive PWM; PM rotor follows, torque ∝ q-axis current.
Structure & Materials:
Laminated silicon-steel stator, NdFeB rotor, anodized aluminum housing, powder-coated end caps, stainless shaft, F-class insulation.
Installation Requirements:
Flange mount on machined face, coupling concentricity <0.05 mm, no radial shaft load >600 N, brake released only with 24 VDC applied.
Usage Notes:
Resolver version needs no absolute battery; encoder version needs homing; derate above 40 °C ambient.
