Key Details

We handle a wide range of REXROTH 4WRA6E20-10/24NZ4/M units. Each one receives inspection, internal cleaning, and reconditioning before it ships.

Independent Repair Facility

We stock common wear parts in-house, so most rebuilds don’t require outside sourcing. Less waiting, faster turnaround.

One-year warranty on all REXROTH 4WRA6E20-10/24NZ4/M valve repairs

Frequently Asked Questions

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

Warranty coverage of our standard 1-year parts and labor warranty is included with every repair we complete.

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.

Yes. Send us photos of the unit from multiple angles. Our team has serviced thousands of models and can often ID them visually.

Yes, rush service is available for an additional fee. Let us know your deadline when you submit your request.

Disassembly and Rebuild Procedure

We rebuild every valve from the inside out: cleaning, inspection, parts replacement, reassembly, and bench testing.

  • Final Performance Verification: After reassembly, each valve is bench-tested against published performance specifications.
  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.

Leak and Performance Testing

NC Servo operates over a dozen dedicated flow test stands, including setups for proportional and servo valves. Every valve goes through performance and leak testing using industry-standard fluids including MIL-5606 and Skydrol. Our operational testing verifies consistent performance.

Repair, Rebuild and Exchange Options

Beyond standard refurbishment, we offer specialized reconditioning for your REXROTH 4WRA6E20-10/24NZ4/M unit. Our teardown process includes pressure testing and bench testing, using only replacement replacement components.

Maintenance Tips

  • Document all maintenance activities to track performance trends over time.
  • Keep hydraulic fluid clean and at proper levels for consistent valve operation.
  • Use only manufacturer-recommended hydraulic fluids to protect internal valve surfaces.

Get a Free Evaluation for Your REXROTH 4WRA6E20-10/24NZ4/M

Request pricing, availability, and turnaround for your REXROTH 4WRA6E20-10/24NZ4/M. NC Servo provides hands-on repair with a 1-year warranty. Contact us to set up 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.