Teardown and Rebuild Steps

Our process involves a teardown of your REXROTH 4WRAB6E12-11/G12N9K4/MR, mineral bath cleaning, and reassembly with quality parts to restore operation.

Why Repair With NC Servo

NC Servo specializes in both valves and electronic controls, which lets us operate without the delays of OEM service centers.

Factory-level test stands dedicated to REXROTH 4WRAB6E12-11/G12N9K4/MR performance verification

Frequently Asked Questions

Yes. Photos of the nameplate and overall unit let us begin identification before it arrives, which speeds up the process.

You can send it as-is. We handle all cleaning and preparation as part of our standard process.

If the main housing or board is intact, repair is usually the better option. We can restore most units to working condition with tested parts.

Part of our intake includes troubleshooting to determine the failure point. We report findings before proceeding.

Rush and priority service options exist. Availability depends on current workload, so contact us early.

How We Rebuild This Valve

Each valve goes through teardown to expose wear and buildup. After mineral bath cleaning, we replace damaged parts and reassemble the unit to spec.

  • Final Performance Verification: After reassembly, each valve is bench-tested against published performance specifications.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.
  • Teardown: Every valve is disassembled for internal inspection.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.

Hydraulic Testing Process

NC Servo operates thirteen in-house test stands, including setups for proportional and servo valves. Every valve goes through performance and leak testing using standard test fluids to match your operational needs. Our pre-shipment testing verifies consistent performance.

Repair, Rebuild and Exchange Options

Beyond standard refurbishment, we offer specialized overhauls for your REXROTH 4WRAB6E12-11/G12N9K4/MR unit. Our disassembly process includes reassembly to spec and leak testing, using only replacement replacement components.

Lead Times and Support

As a dedicated source for REXROTH 4WRAB6E12-11/G12N9K4/MR services, NC Servo targets quick resolution with typical lead times of 2 to 3 weeks. Benefit from our direct access to our technicians to keep your systems running smoothly.

Maintenance Tips

  • Store spare REXROTH 4WRAB6E12-11/G12N9K4/MR valves in a clean, dry environment to prevent corrosion and contamination.
  • Flush the hydraulic system after any major repair to remove debris before reinstalling the REXROTH 4WRAB6E12-11/G12N9K4/MR.
  • Check system pressure regularly to verify it stays within the REXROTH 4WRAB6E12-11/G12N9K4/MR rated operating range.

Get a Free Evaluation for Your REXROTH 4WRAB6E12-11/G12N9K4/MR

Request pricing, availability, and turnaround for your REXROTH 4WRAB6E12-11/G12N9K4/MR. NC Servo provides warrantied repair with a 1-year warranty. Contact us to schedule your repair.

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NC Servo is an independent third-party repair facility. We are not affiliated with, endorsed by, sponsored by, or authorized by REXROTH or any original equipment manufacturer (OEM), nor do we claim to be a REXROTH service center. All brand names, trademarks, model numbers, and part numbers referenced on this page are the property of their respective owners and are used solely for identification and compatibility purposes.