Description
Kollmorgen Seidel 6SM37M-6000 | AC Servo Motor In Stock
Architect’s Product Breakdown
The Kollmorgen 6SM37M-6000 is a compact, high-speed 3-phase AC synchronous brushless servo motor. Built with high-coercivity neodymium permanent magnets integrated into the rotor, it provides exceptional power density and immediate dynamic response for high-duty applications like CNC machine axes, packaging equipment, robotics, and textile machinery.
Decoded model designation:
- 6SM: Synchronous Brushless Servo Motor series
- 37: Frame size and magnetic core stack geometry
- M: Medium stack length / winding style variant
- 6000: 6,000 RPM maximum rated speed capability
The motor features Class F insulation (per DIN 57530), a built-in thermal protection contact inside the stator coil, and an integrated resolver for precise position feedback to drives such as the Kollmorgen SERVOSTAR series.
Replacing an obsolete 6SM37M-6000 with an identical original unit eliminates the need to alter physical mounting brackets, mechanical shaft couplings, or drive gain settings.
6SM37M-6000
Key Technical Specifications
| Parameter | Technical Specification |
| Manufacturer | Kollmorgen / Seidel |
| Product Line | 6SM Synchronous Servo Series |
| Part Number | 6SM37M-6000 / 6SM37M-6000-09 |
| Rated Output Power (P_N) | 0.50 kW (500 W) |
| Standstill / Holding Torque (M_0) | 1.0 Nm |
| Rated Torque (M_N) | 0.8 Nm |
| Peak Torque (M_{max}) | 4.0 Nm |
| Nominal Speed (n_N) | 6000 RPM |
| Standstill Current (I_0) | 1.5 A |
| Torque Constant (K_T) | ~0.62 Nm/A |
| Enclosure Protection | IP64 / IP65 (Standard configuration) |
| Thermal Class | Class F (per DIN 57530) |
| Weight | ~2.3 kg – 2.9 kg (varies by connector/brake option) |
Field Engineer’s Pitfall Guide
- DO NOT Direct-Connect to Grid AC Power: Connecting this permanent magnet synchronous motor directly to 3-phase mains voltage (without a compatible AC servo drive) will damage the stator windings or demagnetize the neodymium magnets.
- Avoid Solvents on Housing: The matte black housing finish (RAL 9005) is not solvent-resistant. Avoid cleaning the motor with harsh chemical degreasers like trichloroethylene or aggressive thinners, which will erode protective seals and coatings.
- Monitor Maximum Operating Temperature: Ensure ambient operating temperatures stay within bounds and heat dissipates through the mounting flange. Overheating above Class F thresholds leads to magnet degradation and thermal tripping.
- Verify Thermostat Connection: Ensure the embedded, potential-free thermal contact wires are connected to the servo drive’s thermal monitoring terminals to protect the motor from burnouts under continuous high-torque duty.
QA & Testing SOP
- Mechanical & Winding Test: Verify smooth bearing rotation, inspect keyway/shaft condition, and test phase-to-phase stator resistance and 1000V DC insulation resistance to ground.
- Back-EMF Symmetrical Check: Drive the motor on a test rig to verify balanced, sinusoidal 3-phase open-circuit back-EMF voltage output across all phases.
- Feedback & Thermal Audit: Verify resolver feedback signals, zero-point alignment, and proper continuity across the internal thermal sensor.
- Dynamic Drive Bench Test: Run under full load coupled to a Kollmorgen SERVOSTAR drive up to 6000 RPM to evaluate speed stability, dynamic acceleration, and temperature profile.
- ESD & Protective Packaging: Seal in anti-static wrap, install shaft protection, and cushion with high-density foam in a heavy-duty shipping box.
Technical FAQ
Can the 6SM37M-6000 be driven by third-party servo amplifiers?
Yes. Although optimized for Kollmorgen SERVOSTAR digital drives, it can operate with third-party drives that support 3-phase permanent magnet AC synchronous motors, evaluate standard resolver feedback signals, and monitor the internal thermal sensor.
Is an internal holding brake retrofittable on this motor?
No. Variants equipped with a holding brake are factory-installed during production. A holding brake cannot be retrofitted in the field onto a standard non-brake motor.
What is the primary difference between the 6SM37L and 6SM37M models?
The L (Long) variant features a longer stack length providing higher continuous standstill torque (e.g., 1.5 Nm at 4000 RPM), while the M (Medium) variant is wound for higher speed applications (up to 6000 RPM with 1.0 Nm holding torque).
