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Kollmorgen S61400-550
Model Number: S61400-550
Product Introduction:
The S61400-550 is a high-power AC servo motor from Kollmorgen’s S600 product line. The “S614” denotes the frame size, “00” denotes the stack length, and “550” denotes the winding code. This motor is designed for high-torque, high-speed applications in demanding industrial environments.
Detailed content
Technical Specifications:
| Parameter | Value |
|---|---|
| Frame Size | S614 (NEMA 34 equivalent) |
| Stator Outer Diameter | 140 mm (approx.) |
| Stack Length | 00 (standard length for S614) |
| Rated Torque (Continuous) | 18.0 Nm |
| Peak Torque | 54.0 Nm (3× rated, 10 s) |
| Rated Speed | 2500 RPM (continuous) |
| Max Speed | 4500 RPM |
| Rated Power | ~4.7 kW (continuous) |
| Winding Code | 550 (Rated voltage: 480 V AC line-to-line) |
| Feedback Device | Multi-turn absolute encoder (EnDat 2.2 / BiSS-C, 2048 lines, up to 4096 turns) |
| Holding Brake | With electromagnetic brake (24 V DC, 24 Nm holding torque) |
| Insulation Class | Class F (155°C) |
| IP Rating | IP65 (with optional seal kit) / IP54 (standard) |
| Weight | ~9.5 kg |
| Shaft Type | Keyed shaft with D-cut, 25 mm diameter |
| Bearings | Deep groove ball bearings (sealed, greased for life) |
| Cooling | Self-ventilated (IC411) or forced air (IC416) |
Structural Characteristics:
- Cast aluminum housing with high-precision bored stator bore
- Neodymium (NdFeB) magnets for maximum torque density
- Skew-slot stator — 48 slots / 6 poles configuration
- Double-shielded bearings for extended life in contaminated environments
- Integrated temperature sensor (KTY84) in each winding phase
Performance Parameters:
| Parameter | Value |
|---|---|
| Torque Constant (Kt) | 0.72 Nm/A (typical) |
| Back-EMF Constant (Ke) | 6.85 V/krpm (typical) |
| Rotor Inertia | ~55 × 10⁻⁴ kg·m² (5500 × 10⁻⁶ kg·m²) |
| Mechanical Time Constant | ~35 ms |
| Electrical Time Constant | ~5 ms |
| Torque-to-Inertia Ratio | ~327 Nm/kg·m² |
Advantages:
- High continuous torque (18 Nm) in a compact S614 frame
- Multi-turn absolute encoder — no homing required after power loss
- Electromagnetic brake — holds load without power (24 Nm)
- IP65 rating — suitable for washdown and dusty environments
- Wide speed range with constant torque to 2500 RPM
Applicable Industries:
Metal cutting (mills, lathes), presses, extruders, large robot axes, wind tunnel actuators, marine propulsion
Installation Requirements:
- Mount using 4× M10 mounting holes on the front flange (NEMA 34 pattern)
- Shaft coupling: Use torque-limiting or bellows coupling — maximum misalignment 0.1 mm radial, 0.1° angular
- Brake wiring: 24 V DC, max 0.5 A continuous
- Encoder cable: shielded twisted pair, minimum bend radius 80 mm
Usage Notes:
- Do not exceed 4500 RPM — overspeed protection must be configured in the drive
- Brake release time: ~30 ms — account for this in stopping sequences
- Derate torque 1% per °C above 40°C ambient temperature
- Perform encoder alignment (zero offset) during commissioning using Kollmorgen Workbench
