Kollmorgen Seidel 6SM37L-4.000 | 1.5Nm AC Servo Motor In Stock

Description

Kollmorgen Seidel 6SM37L-4.000 | 1.5Nm AC Servo Motor In Stock

Architect’s Product Breakdown

The Kollmorgen 6SM37L-4.000 is a compact, brushless AC synchronous servo motor from the classic 6SM family. Designed to operate seamlessly with digital amplifiers like the SERVOSTAR series, this motor excels in positioning tasks where high power density and fast acceleration are essential.

The model number designation typically decodes as:

• 6SM: Synchronous Servo Motor product family
• 37: Frame size and magnet stack geometry identifier
• L: Winding style / stack length specification
• 4.000: 4,000 RPM nominal speed rating

The motor features high-temperature Class F winding insulation according to DIN 57530, an integrated thermal protection circuit (normally closed thermostat), and a built-in resolver for position/speed feedback to the drive controller.

Because original 6SM series production has been phased out, acquiring exact 6SM37L-4.000 units is critical for maintenance operations looking to avoid mechanical re-engineering, shaft coupling adjustments, or drive parameter recalibrations.

6SM37L-4.000

Key Technical Specifications

Field Engineer’s Pitfall Guide

• DO NOT CONNECT directly to grid line power: The 6SM37L-4.000 is a permanent magnet synchronous motor. Connecting it straight to a 3-phase mains supply (without a dedicated variable-frequency servo drive like SERVOSTAR) will destroy the motor windings or demagnetize the rotor.
• Flange Temperature Limit (Thermal Overload): Ensure the mounting flange temperature does not exceed 65°C under continuous duty. Overheating the motor flange leads to rapid degradation of rotor magnets and bearing lubricant.
• Observe Built-in Thermostat Wiring: The stator contains an integrated, electrically isolated, normally closed thermostat. If you are constructing custom feedback cables, ensure the thermostat wires are wired to the drive’s thermal monitoring circuit to prevent catastrophic motor burnouts.
• Resolver Alignment on Repairs: If replacing or servicing the rear resolver assembly, do not shift the optical/magnetic alignment blindly. A misaligned resolver causes torque ripple, runaway speed conditions, or immediate drive overcurrent trips.

QA & Testing SOP

1. Mechanical & Winding Continuity Check: Inspection of shaft keyway, smooth rotation, bearings, stator resistance phase-to-phase, and insulation resistance test (Megger 1000V DC to ground).
2. Back-EMF Waveform Balancing: Motor driven on a test bench to measure 3-phase open-circuit voltage waveforms for symmetrical sinusoidal output across phases.
3. Resolver Feedback Verification: Verification of resolver signal integrity, phase angle zeroing, and temperature sensor continuity.
4. Dynamic Load Test: Run test under full load tied to a Kollmorgen SERVOSTAR amplifier at 4000 RPM to evaluate speed stability, torque response, thermal profile, and mechanical noise/vibration.
5. ESD & Protective Packaging: Sealed in anti-static protective wrapping, fitted with shaft protective sleeves, and cushioned with shock-absorbing foam for transit.

Technical FAQ

Can I run the 6SM37L-4.000 with a third-party servo drive?

While designed primarily for Kollmorgen / Seidel SERVOSTAR amplifiers, it can be driven by third-party drives as long as the amplifier supports 400/460V 3-phase permanent magnet synchronous motors, accepts standard resolver feedback, and evaluates the internal thermal contact.

What is the primary difference between IP64 and standard IP54 motors?

IP64 guarantees complete protection against dust ingress and resistance to water splashes from any direction, making the 6SM37L-4.000 suitable for wet or dusty machine tool environments.

Does this motor include a holding brake?

The standard 6SM37L-4.000 model does not include an internal holding brake unless specified with an optional suffix code (e.g., brake variant). Verify your physical part label if the motor is mounted on a vertical axis.