Digital guide

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Kollmorgen B-206-A-31

  • Product Name:​ Goldline B-Series Permanent-Magnet Brushless Servo Motor
  • Frame:​ B-206 (B-size, 06 stack)
  • Winding:​ A winding
  • Feedback:​ 2-pole resolver (closed-loop commutation)

Detailed content

  • Rated Speed:​ 1400 rpm at rated power
  • Max Speed:​ 1400 rpm (B-206-A variant, non-overhauled catalog)
  • Stall Torque (40 °C):​ 6.51 Nm
  • Stall Torque (25 °C):​ 6.9 Nm
  • Rated Power:​ 0.97 kW (1.3 hp)
  • Torque Constant:​ 2.15 Nm/Arms
  • Back EMF:​ 130 Vrms/krpm
  • Resistance:​ 8.82 Ω line-line
  • Inductance:​ 32 mH line-line
  • Rotor Inertia:​ 0.00222 kg·m² class (B-206 family)
  • Weight:​ 16.7 kg (including brake/option variants per distributor data)
  • Protection:​ IP67 with seal rings; dust-tight, brief water immersion (distributor limit 30 min at 6 ft depth)
  • Thermal:​ Built-in thermostat monitoring winding temperature
  • Construction:​ Low-inertia rotor, cast/aluminum frame, explosion-proof design option, black enamel or anodized finish
  • Shaft:​ Defined by suffix 31 (keyway/smooth + connector orientation per legacy Goldline code table)
  • Mounting:​ Flange or foot mount per B-series mechanical drawing; align coupling to avoid radial shaft load
  • Applications:​ High-acceleration rotary axis, hazardous-environment machinery, underwater-capable actuators, legacy CNC retrofit
  • Precautions:​ Resolver alignment mandatory on replacement; IP67 submersion beyond catalog limit damages seals; match drive bus voltage to winding (typically 320 VDC class)

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