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Kollmorgen B-204-B-39-016

Product Name:​ Goldline B-Series Brushless Servo Motor
Family:​ Goldline B (legacy rare-earth PM motors)
Introduction:​ Frame-20 (92×92 mm) low-inertia motor for fast cyclic motion, paired historically with SERVOSTAR CD/S300/S400 amplifiers.
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Detailed content

Technical Specifications:
  • Frame: B-204 (frame 20, stack 4)
  • Magnet: interior NdFeB, low rotor inertia
  • Rated output: ~1.6 kW (varies by winding B)
  • Rated speed: 3600–6200 rpm depending load point
  • Stall torque: ~2.6–3.5 Nm class
  • Feedback: resolver (B-39 code = resolver + thermostat)
  • Shaft: keyed/open, rear extension optional
  • Insulation: Class H (180 °C)
  • Connector: bayonet style (no mating plug supplied)
  • Protection: IP65
  • Thermostat: built-in overtemperature switch
Features:​ Extremely low inertia, 4-pole, rugged for 24/7 duty.
Construction:​ Cast aluminum endbells, steel laminations, Class H magnet wire.
Principle:​ Classical trapezoidal/sinusoidal BLDC with resolver commutation.
Application:​ Legacy machine tools, coilers, web transport.
Mounting:​ NEMA 56C/metric flange adapter; balance coupling.
Notes:​ B-204-B-39-016 is a legacy spare; verify stack length against nameplate before substituting with AKM.

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