Bosch Rexroth MS2N06-D1BNN-CSSG0-NNNNN-NN Servo Motor – Obsolete MS2N Series Spare Part

Technical Dossier

Product Details And Specifications

Bosch Rexroth MS2N06-D1BNN-CSSG0-NNNNN-NN Servo Motor – Obsolete MS2N Series Spare Part

When a servo motor fails on a production line built around Bosch Rexroth IndraDrive or legacy Indramat drive systems, the clock starts immediately. A full line upgrade — new drives, new motors, new cabling, new commissioning, new PLC parameter mapping — routinely costs between $200,000 and $1,500,000 USD depending on axis count and system complexity. That figure does not include lost production revenue during the transition period, which in high-throughput manufacturing can exceed the hardware cost within days. The MS2N06-D1BNN-CSSG0-NNNNN-NN is a discontinued synchronous servo motor from Bosch Rexroth's MS2N series. DriveKNMS maintains limited verified stock of this unit specifically to protect facilities from that forced-upgrade scenario.

Technical Specifications

Note: Electrical parameters (rated torque, rated speed, rated current, winding voltage) vary by exact winding code. Confirm your drive's motor data set before installation. DriveKNMS does not publish unverified electrical data.

Solving the Discontinued Hardware Crisis

The MS2N series was Bosch Rexroth's mid-range synchronous servo platform, widely deployed across packaging machinery, injection molding, printing presses, and precision assembly lines throughout the 2000s and 2010s. These motors were engineered to operate within the IndraDrive ecosystem — the drive firmware, motor data sets (MDS), and feedback protocols are tightly coupled. Substituting a motor from a different manufacturer or even a different Rexroth series requires re-parameterization of the drive, re-commissioning of the axis, and in many cases, a new motor data set file that the OEM machine builder must validate.

For a plant running 24/7 production, that engineering work is not a weekend project. It involves Rexroth application engineers, machine OEM sign-off, and a controlled production shutdown. The total cost of that exercise — engineering hours, lost production, validation testing — frequently exceeds $80,000 per axis on complex machinery.

Maintaining a verified spare MS2N06-D1BNN-CSSG0-NNNNN-NN on the shelf eliminates that risk entirely. A failed motor is swapped in under two hours by in-house maintenance staff. The drive recognizes the motor immediately. Production resumes. The capital expenditure decision — whether to upgrade or extend — remains in the hands of plant management rather than being forced by an emergency breakdown.

This is the core logic of asset protection through strategic spare parts inventory: the cost of one spare motor is a fraction of one unplanned downtime event.

Extending Automation Asset Life by 5–10 Years: A Practical Framework

Facilities managing aging Rexroth IndraDrive or Indramat-era systems face a structured decision: invest in a controlled upgrade on a planned timeline, or extend the existing system's operational life while that upgrade is budgeted and scheduled. The second path is viable — but only with disciplined spare parts management.

• Identify single points of failure. On each machine axis, determine which motor or drive failure would cause a full line stop. These are your priority procurement targets. The MS2N06 frame size is common on high-cycle-rate axes where bearing wear and winding fatigue are the primary failure modes.
• Maintain minimum one-for-one coverage. For discontinued motors with no cross-reference substitute, one verified spare per installed unit is the minimum defensible position. For critical axes, two spares is standard practice in facilities with ISO 55000 asset management frameworks.
• Audit encoder battery and firmware state. Absolute encoders in MS2N motors with battery-backed multi-turn capability require periodic battery replacement. A dead encoder battery on startup causes a drive fault that is frequently misdiagnosed as motor failure, leading to unnecessary motor replacement.
• Document drive parameter sets. Back up IndraDrive parameter files (P-0-xxxx series) for every axis. If a drive fails and must be replaced, the motor data set must be reloaded. Without this backup, commissioning a replacement drive requires Rexroth support involvement and significant downtime.
• Negotiate long-term supply agreements for obsolete stock. Distributors holding discontinued Rexroth motors will deplete inventory over time. Securing a multi-unit purchase now, at current market pricing, protects against both availability risk and price escalation as remaining global stock diminishes.

Condition & Reliability Assurance

Discontinued servo motors sourced from the secondary market carry inherent risk if not properly evaluated. DriveKNMS applies a 5-step verification protocol to all MS2N units before shipment:

1. Visual and mechanical inspection. Shaft runout measurement, bearing play assessment, housing integrity check, connector pin inspection for corrosion or mechanical damage. Units with bent shafts, cracked housings, or corroded connectors are rejected.
2. Winding resistance and insulation testing. Phase-to-phase resistance balance and insulation resistance (megger test) to identify winding degradation. Motors with insulation resistance below acceptable thresholds are not sold as functional units.
3. Encoder verification. Encoder signal integrity is verified where test equipment permits. Battery voltage is checked on battery-backed absolute encoder variants. Firmware version is documented where readable.
4. Electrolytic capacitor assessment. Internal capacitor condition is evaluated on units where access permits. Capacitor aging is a primary failure mode in motors stored for extended periods.
5. Functional run test. Where DriveKNMS test bench compatibility allows, motors are run under no-load conditions and monitored for abnormal noise, vibration, or thermal behavior prior to shipment.

Condition grade (New, Tested Surplus, Refurbished) is documented on the shipment certificate accompanying each unit.

Key Features for System Maintenance

• Drop-in replacement: The MS2N06-D1BNN-CSSG0-NNNNN-NN installs directly into the existing motor mount without mechanical modification. Flange dimensions and shaft geometry are identical to the original installed unit.
• No drive re-parameterization required: Provided the replacement motor carries the same winding code, the existing IndraDrive motor data set (MDS) remains valid. No Rexroth engineer involvement is required for the swap.
• No PLC or HMI changes: The axis behavior from the machine controller's perspective is unchanged. No program modifications, no safety validation re-runs triggered by hardware changes.
• Avoids engineering reconstruction costs: A cross-series or cross-manufacturer motor substitution requires new MDS files, drive firmware compatibility checks, and OEM machine builder sign-off. This unit eliminates all of that.
• Preserves existing safety certifications: Replacing a motor with an identical part number does not trigger CE re-certification requirements in most jurisdictions, unlike a design change substitution.

FAQ

What warranty applies to a discontinued motor like the MS2N06-D1BNN-CSSG0-NNNNN-NN?
DriveKNMS provides a 90-day functional warranty on tested surplus and refurbished units, covering verified electrical and mechanical failure. New-in-box units carry a 12-month warranty. Warranty terms are confirmed in writing at the time of order.

How do I confirm the unit is genuine Bosch Rexroth and not a counterfeit?
All units are inspected for Rexroth nameplate authenticity, serial number format consistency, and manufacturing markings. Serial numbers can be cross-referenced with Rexroth's service database where applicable. DriveKNMS does not source from unverified brokers.

Can I order multiple units for long-term spare parts inventory?
Yes. Multi-unit orders are accommodated and encouraged for facilities managing aging Rexroth installations. Contact us to discuss volume pricing and staged delivery schedules aligned with your maintenance budget cycles.

What if my exact winding code differs from the listed part number?
The MS2N option code string encodes winding, encoder type, brake, and shaft configuration. If your installed motor's full part number differs from MS2N06-D1BNN-CSSG0-NNNNN-NN, contact us before ordering. We will confirm compatibility or identify the correct matching unit from available stock.

How should discontinued spare motors be stored?
Store in a dry, temperature-stable environment (10–40°C), away from direct sunlight and vibration sources. Rotate shaft quarterly to prevent bearing brinelling. For battery-backed encoder variants, check and replace encoder battery every 2–3 years in storage.

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