Description
Technical Specifications:
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Series: Kollmorgen 6SM (Seidel line)
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Motor type: 3‑phase, 6‑pole brushless permanent‑magnet synchronous servo
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Rated power: 0.94 kW (1.26 hp) – listings also show 0.95 kW
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Rated speed: 3000 rpm
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Rated torque: 3.0 N·m (approx.)
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Standstill (holding) torque: 3.8 N·m
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Peak torque: 4.6 N·m
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Rated current: 2.8 A RMS (some listings 2.7 A)
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Standstill current: 2.8 A RMS
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Peak current: 8.4 A RMS
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Torque constant (K_T): ≈1.07 N·m/A (line‑to‑line)
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Voltage constant (K_E): ≈111 mV/min (back‑EMF)
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Winding resistance (R₂₀): ≈8.5 Ω (line‑to‑line, estimated)
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Winding inductance (L): ≈45 mH (line‑to‑line, estimated)
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Rotor inertia: 0.38 × 10⁻⁴ kg·m² (0.38 kg·cm², without brake)
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Brake inertia: 3.6 kg·cm² (0.36 × 10⁻³ kg·m²)
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Mechanical time constant: ≈3.0 ms
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Thermal time constant: 20 min (winding), 45 min (housing)
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Insulation class: F (155 °C) with Class B temperature rise (80 K)
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Protection class: IP65
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Vibration class: N (per DIN EN 60034‑14)
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Mounting: IEC 57 mm square flange, 14 mm keyed shaft
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Shaft load: 530 N radial (max at shaft end), 170 N axial
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Holding brake: Spring‑applied, electrically released disc brake
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Brake torque: 12 N·m
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Operating voltage: 24 V DC
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Power consumption: 18 W holding, 3.8 A inrush
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Release time: 30 – 60 ms
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Clamping delay: 10 – 20 ms
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Feedback: Resolver (standard) or incremental encoder (optional)
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Operating temperature: 0 °C to +40 °C (derate above 40 °C)
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Storage temperature: –20 °C to +70 °C
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Weight: ≈5.5 kg (with brake); motor alone ≈5.7 kg per some listings
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Dimensions: 57 × 57 mm flange, ≈220 mm length (with brake)
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Compatible drives: Kollmorgen Servostar CD/S300/S600, Digifas series, third‑party 400 V‑class servo amplifiers
Features:
Integrated high‑torque brake (12 N·m) for vertical‑axis safety; resolver feedback; IP65; lower current draw vs. 6SM57M‑3.
Application Scenarios:
Vertical lift axes, Z‑axes on machine tools, hoists, and any application where load must be held when power is removed.
Construction & Material:
Same rugged 57‑frame IP65 housing as 6SM57M‑3, plus spring‑applied disc brake stack at rear.
Working Principle:
Same brushless synchronous operation as other 6SM motors; brake is mechanically engaged by spring pressure and released electrically when 24 V DC is applied.
Installation Requirements:
Flange‑mount; connect motor power (shielded) and resolver (shielded twisted pair); supply 24 V DC to brake release circuit; ensure brake is released before motion; monitor brake state in control logic.
Precautions:
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Brake holds load only when 24 V DC is absent—verify safe‑off behavior.
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Inrush current 3.8 A transient; size power supply accordingly.
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Do not exceed 530 N radial / 170 N axial shaft loads.
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Operate within 0‑40 °C ambient; derate above.
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Ensure drive provides correct resolver excitation and commutation.
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