AUTOTECH SAC-RL100-M11 Resolver – Obsolete RL100 Series Spare Part

Technical Dossier

Product Details And Specifications

AUTOTECH SAC-RL100-M11 Resolver – Obsolete RL100 Series Spare Part

DriveKNMS reviews sourcing options for this model during RFQ handling before quotation.

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

Technical Specifications

Solving the Discontinued Hardware Crisis

The SAC-RL100-M11 is a resolver — not an encoder. Resolvers are inherently more robust in harsh industrial environments: they are immune to vibration-induced count loss, tolerate wide temperature swings, and carry no internal electronics that degrade over time. This is precisely why AUTOTECH's RL100-series resolvers were specified into high-cycle servo applications in the first place, and why so many of these systems remain in service decades after the product line was discontinued.

For plant managers operating under capital expenditure constraints, the calculus is straightforward. A verified SAC-RL100-M11 spare extends the productive life of the existing asset by 5 to 10 years at a fraction of the retrofit cost. Holding two to three units in bonded stores eliminates the single-point-of-failure risk entirely.

Condition & Reliability Assurance

Every SAC-RL100-M11 unit processed by DriveKNMS passes a structured 5-step inspection protocol before it is offered for sale:

• Step 1 – Visual and mechanical inspection: Housing integrity, shaft runout check, connector pin condition, and corrosion assessment on all mating surfaces.
• Step 2 – Winding resistance verification: Primary and secondary winding resistance measured and compared against known-good reference values to detect open circuits or inter-winding shorts.
• Step 3 – Insulation resistance test: Megohm-level insulation check between windings and between windings and housing to confirm dielectric integrity.
• Step 4 – Connector and pin corrosion audit: M11 connector pins inspected under magnification. Oxidized contacts are cleaned or flagged for replacement before dispatch.
• Step 5 – Firmware and compatibility cross-reference: Unit part number and date code verified against known production batches to confirm compatibility with target drive systems.

Extending Automation Asset Life: A Maintenance Strategy for Plant Management

The economic case for maintaining legacy servo systems rather than replacing them is well established in facilities where the process is stable and the capital budget is constrained. The SAC-RL100-M11 resolver is a consumable within a larger, expensive asset. The servo motor, the drive, the mechanical transmission, and the process tooling represent the real capital investment. Protecting that investment through proactive spare parts management is not a compromise — it is sound asset stewardship.

Facilities that have adopted this approach report that the total cost of a planned spare parts program — including procurement, storage, and periodic condition checks — is consistently less than 8% of the cost of a single unplanned axis retrofit. The risk-adjusted return on holding verified resolver spares is not a marginal improvement. It is a structural reduction in operational exposure.

How do I know the unit is genuine and not a counterfeit?
All units are inspected against known AUTOTECH production markings, date codes, and winding characteristics. We do not source from unverified brokers. Provenance documentation is available for units where chain-of-custody records exist.

Should I buy more than one unit?
For any axis running in a production-critical application, holding a minimum of two SAC-RL100-M11 units in stores is the standard recommendation. Given the declining availability of this part, procurement decisions made today carry significantly lower cost and risk than those made after a failure event.

Can you source this part if I need it urgently?
Contact us immediately. We maintain active sourcing channels for obsolete AUTOTECH components. Response time for urgent inquiries is within 4 business hours.