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Kollmorgen B-206-B-32-B3
Product Series: Kollmorgen Goldline B Series (Low-Inertia, 230 VAC Line Voltage)
Product Brief: 3-phase interior permanent magnet (IPM/NdFeB) synchronous servo motor offering high torque density and low cogging for dynamic point-to-point motion. Frame “20” = B-20x — flange 88.9 mm × 88.9 mm (NEMA 34), pilot Ø 63.5 mm, 4× M6 on 101.6 mm BCD. “B” winding = lower torque constant / higher speed capability vs C/D windings. Factory-fitted with 2-pole resolver (standard on Goldline B). “32” in option string = keyed shaft + standard seals; “B3” = mating circular connector + special oil seal. Compatible with SERVOSTAR S300/S600/S700 and AKD (120/240 V models).
Detailed content
Frame Size: B-20x — Flange 88.9 mm × 88.9 mm (NEMA 34), shaft Ø 12.7 mm (0.500 in) with keyway
Rated / Continuous Stall Torque (Tc, B-winding): ≈ 1.3 – 1.6 Nm (lower than C-winding)
Peak Torque (Tp, short-term): ≈ 3.9 – 4.8 Nm
Rated Speed (nN, B-winding): 3000 rpm (some B-windings rated 3600–4000 rpm @ 230 VAC line)
Rated Power (Continuous): ≈ 0.4 – 0.5 kW
Rated Current (RMS): ≈ 2.0 – 2.8 A
Peak Current (RMS): ≈ 6.0 – 8.4 A
Torque Constant (Kt, line-line): ≈ 0.50 – 0.60 Nm/A
Back-EMF Constant (Ke, line-line): ≈ 33–40 V/krpm (RMS)
Winding Resistance (Line-Line, 25 °C): ≈ 3.0 – 4.5 Ω
Winding Inductance (Line-Line): ≈ 6 – 12 mH
Rotor Inertia (without brake): ≈ 0.25 × 10⁻⁴ kg·m² (0.25 kg·cm²)
Brake: None (unless -Bxx option present — not in this suffix)
Feedback Device: 2-pole Resolver (standard Goldline B)
Insulation Class: Class F (155 °C), 100 K rise above 40 °C ambient
Protection Class: IP65 (shaft seal + O-ring on connector when mated)
Cooling: Natural convection
Operating Temperature (Ambient): 0 °C to +40 °C rated; –20 °C to +55 °C with derating
Housing Material: Black painted steel lamination stack; cast aluminum end bell; NdFeB magnets
Connector Type: Circular military-style or Intercontec M23 (power + feedback pins)
Weight (approx.): ≈ 2.0 – 2.5 kg
Mounting Pattern: 4× M6 on 101.6 mm BCD (NEMA 34 pattern)
Compliance: cURus, CE
Applicable Industries: High-speed spindle/feeder axes, labelers, small packaging indexers, electronic assembly handlers, textile guide rollers
Installation Requirements: Flange-mount on machined NEMA 34 pattern; align load coupling coaxially (max overhung radial load ≈ 110 N at shaft end); torque mounting bolts to spec; connect PE; use shielded feedback cable with shield grounded at drive end only.
Usage Notes: B-winding yields higher max speed but lower continuous torque vs C-winding — confirm application torque-speed point lies within motor capability curves; Goldline B is discontinued — AKM63 (keyed shaft option) is closest replacement; resolver auto-commutated by AKD/S700; thermal time constant ~15–20 min.
