SEW-EURODRIVE CMP40M/BK/KY/RH1M/SB1 Synchronous Servomotor – Obsolete CMP Series Spare Part

Technical Dossier

Product Details And Specifications

SEW-EURODRIVE CMP40M/BK/KY/RH1M/SB1 Synchronous Servomotor – Obsolete CMP Series Spare Part

RFQ support for obsolete parts: Send the model number, required quantity and destination so DriveKNMS can confirm sourcing options before quotation.

Technical Specifications

Note: Electrical parameters (rated torque, speed, power, voltage) vary by configuration. Contact us with your nameplate data for cross-verification before ordering.

Solving the Discontinued Hardware Crisis

The SEW-EURODRIVE CMP series was widely deployed throughout the 2000s and early 2010s in packaging machinery, textile equipment, material handling conveyors, and precision assembly lines. These systems were engineered for 20–30 year service lives, and many remain mechanically sound. The servomotor, however, is the component most exposed to thermal cycling, vibration fatigue, and encoder degradation — making it the first point of failure in an otherwise functional drive train.

Sourcing a verified CMP40M/BK/KY/RH1M/SB1 from DriveKNMS eliminates that path entirely. The motor installs into the existing mechanical interface, communicates via the existing Hiperface encoder protocol, and requires no changes to the upstream drive controller configuration.

Extending Automation Asset Life by 5–10 Years: A Maintenance Strategy for Plant Management

For factory managers operating legacy SEW-EURODRIVE CMP-based lines, the decision to retire a system is rarely driven by mechanical obsolescence — it is driven by parts unavailability. A structured spare parts strategy can defer that decision by a decade or more, at a fraction of the cost of a system upgrade.

2. Establish a rotational spare pool. Rather than holding a static spare, rotate a tested unit into service periodically and return the field unit for inspection. This prevents shelf degradation of electrolytic capacitors in the drive electronics and keeps encoder calibration current.

3. Document encoder reference values. The KY single-turn absolute encoder stores position reference data that is lost if the motor is replaced without proper handover procedures. Maintaining a documented encoder offset record for each axis eliminates commissioning delays during emergency replacement.

Condition & Reliability Assurance

Every CMP40M/BK/KY/RH1M/SB1 unit processed by DriveKNMS undergoes a structured 5-step quality verification protocol before dispatch:

Step 1 – Electrolytic Capacitor Assessment: Internal drive-side capacitors are inspected for ESR drift and physical deformation. Units showing capacitor aging beyond acceptable tolerance are flagged and not offered for sale.

Step 2 – Firmware Version Verification: Where encoder firmware is accessible, version compatibility with MOVIDRIVE B and MOVITRAC B controller families is confirmed and documented.

Step 3 – Pin and Connector Inspection: All motor power and encoder connector pins are inspected under magnification for oxidation, corrosion, and mechanical deformation. Affected pins are cleaned or the unit is rejected.

Step 4 – Winding Insulation Test: Phase-to-phase and phase-to-ground insulation resistance is measured. Results are recorded and provided upon request.

Step 5 – Mechanical Integrity Check: Shaft runout, bearing play, and brake engagement force are verified against SEW-EURODRIVE published tolerances.

Key Features for System Maintenance

• Drop-in replacement: Identical mechanical footprint and encoder interface to the original CMP40M/BK/KY/RH1M/SB1. No mechanical adaptation required.
• No reprogramming required: Hiperface KY encoder protocol is natively recognized by MOVIDRIVE B and MOVITRAC B controllers. Encoder offset teach-in is the only commissioning step required.
• Brake compatibility preserved: BK holding brake wiring and control logic remain unchanged. No modifications to the safety circuit are required.
• Avoids engineering redesign costs: Eliminates the need for mechanical re-coupling, cable harness replacement, controller firmware migration, and PLC axis reconfiguration.
• Documented traceability: Each unit ships with inspection records and, where available, original manufacturer documentation.

Q: Can you source other CMP series variants?
A: Yes. DriveKNMS maintains sourcing networks for the broader CMP series including CMP50, CMP63, CMP71, and CMP80 frames in various brake, encoder, and connector configurations. Submit your full type code for availability confirmation.