Valve Overview

NC Servo Tech provides repair and reconditioning for the REXROTH 4WE10J21/AW110NAV. With in-house tooling and stocked parts, we keep turnaround times short.

Why Repair With NC Servo

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

17,000+ valves in stock including REXROTH 4WE10J21/AW110NAV exchange units

Frequently Asked Questions

Even if the tag is worn off, we can often match the unit based on shape, size, and internal configuration.

Warranty coverage of a 12-month warranty on parts and labor is included with every repair we complete.

We recommend sending pictures, especially if the model number is unclear or there is visible damage.

Expedited options are available depending on current scheduling. Contact us to discuss your timeline.

In most cases, repair costs less than replacement, especially for legacy or OEM-specific models. We evaluate every unit and let you know what makes sense.

Rebuild Steps

The process begins with disassembly and visual evaluation. We then clean, replace worn pieces, and reassemble the valve to restore its function.

  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.
  • Final Performance Verification: After reassembly, each valve is bench-tested against published performance specifications.
  • Complete Disassembly: The unit is disassembled and all parts are laid out for individual inspection.
  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.

Hydraulic Testing Process

With over a dozen dedicated flow test stands and a Hagenbush proportional valve system, we verify flow curves, hysteresis, frequency response, and more. Performance reports and graphs are available for purchase on request. Our performance testing verifies proper functionality.

Industries We Serve

Our professional repair services for the REXROTH 4WE10J21/AW110NAV are trusted across various sectors including Manufacturing, Construction, and Industrial Machinery. We understand the unique demands of valves in these environments.

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

  • Store spare REXROTH 4WE10J21/AW110NAV valves in a clean, dry environment to prevent corrosion and contamination.
  • Check system pressure regularly to verify it stays within the REXROTH 4WE10J21/AW110NAV rated operating range.
  • Keep a spare REXROTH 4WE10J21/AW110NAV on hand to minimize downtime during unplanned failures.

Start Your REXROTH 4WE10J21/AW110NAV Reconditioning Process

Request pricing, availability, and turnaround for your REXROTH 4WE10J21/AW110NAV. NC Servo Tech provides independent repair with a 1-year warranty. Contact us to set up your repair.

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NC Servo Tech 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.