Digital guide
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Kollmorgen B-402-B-A1-B2
Product Series: Kollmorgen Goldline B Series (Low-Inertia, 230 VAC Line Voltage)
Product Brief: 3-phase interior permanent magnet (IPM/NdFeB) synchronous servo motor. Frame “40” = B-40x — flange 110 mm × 110 mm (NEMA 56 / IEC 110), pilot ≈ 80 mm, 4× M8 on 130 mm BCD. “B” winding = medium-low torque constant / higher speed capability. Factory-fitted with 2-pole resolver (standard on Goldline B). “A1” = keyed shaft + standard seals; “B2” = mating circular connector type + optional shaft seal. Compatible with SERVOSTAR S300/S600/S700 and AKD (120/240 V models for B-winding).
Detailed content
Frame Size: B-40x — Flange 110 mm × 110 mm, shaft Ø 19 mm (0.750 in) with keyway (typical for B-402)
Rated / Continuous Stall Torque (Tc, B-winding): ≈ 3.5 – 4.2 Nm
Peak Torque (Tp, short-term): ≈ 10.5 – 12.6 Nm
Rated Speed (nN, B-winding): 3000 rpm (some B-windings rated 3600 rpm @ 230 VAC line)
Rated Power (Continuous): ≈ 1.1 – 1.3 kW
Rated Current (RMS): ≈ 3.5 – 4.5 A
Peak Current (RMS): ≈ 10.5 – 13.5 A
Torque Constant (Kt, line-line): ≈ 0.95 – 1.10 Nm/A
Back-EMF Constant (Ke, line-line): ≈ 62–72 V/krpm (RMS)
Winding Resistance (Line-Line, 25 °C): ≈ 1.2 – 1.8 Ω
Winding Inductance (Line-Line): ≈ 8 – 14 mH
Rotor Inertia (without brake): ≈ 0.85 × 10⁻⁴ kg·m² (0.85 kg·cm²)
Brake: None (unless -Bxx option present)
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.): ≈ 4.5 – 5.5 kg
Mounting Pattern: 4× M8 on 130 mm BCD
Compliance: cURus, CE
Applicable Industries: Converting winders, packaging form-fill-seal main axes, printing press register/damping, textile take-up, woodworking feed drives
Installation Requirements: Flange-mount on machined 110 mm pattern; align load coupling coaxially (max overhung radial load ≈ 250 N at shaft end); torque mounting bolts to spec; connect PE; use shielded feedback cable with shield grounded at drive end only.
Usage Notes: Goldline B is discontinued — AKM41/AKM42 (keyed shaft) are functional replacements; verify feedback type (resolver standard) matches drive before commissioning; resolver auto-commutated by AKD/S700; thermal time constant ~20 min — respect continuous torque limit.
