About This Unit

NC Servo Technology provides repair and reconditioning for the REXROTH 4WRA6V30-22/G24N9K4/V-389. With in-house tooling and stocked parts, we keep turnaround times short.

Independent Repair Facility

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

Specializing in REXROTH 4WRA6V30-22/G24N9K4/V-389 servo valve technology for over five decades

Frequently Asked Questions

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

All repairs come with a 12-month warranty on parts and labor. Contact us for specifics on your unit.

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

Inspection and root-cause analysis are part of our standard process. We identify the issue before starting any repair work.

Turnaround time varies by model and condition. Contact us for a timeline specific to your unit.

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.

  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.
  • 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.
  • Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.

Leak and Performance Testing

NC Servo Technology operates our 13-stand test facility, 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 operational testing verifies proper functionality.

Performance Data

Every REXROTH 4WRA6V30-22/G24N9K4/V-389 we service is tested under real-world conditions. Our diagnostics verify performance against published specifications. Specification sheets and Cycle life data are available for purchase upon request.

Parts and Inventory

With an extensive stock of 17,000+ valves, we can often provide faster turnaround by sourcing parts in-house rather than waiting on OEM lead times.

Maintenance Tips

  • Document all maintenance activities to track performance trends over time.
  • Conduct thorough visual inspections for wear or leaks during routine maintenance.
  • Replace inline filters according to maintenance schedules to maintain proper flow rates.

Ready to Restore Your REXROTH 4WRA6V30-22/G24N9K4/V-389?

Request pricing, availability, and turnaround for your REXROTH 4WRA6V30-22/G24N9K4/V-389. NC Servo Technology provides experienced repair with a 1-year warranty. Contact us to schedule your repair.

Request a Quote View All REXROTH Products Shop REXROTH Inventory

NC Servo Technology 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.