Repair Procedure

We specialize in the overhaul of your REXROTH Z4WE6E68-21/AG24NZ45, including the replacement of all necessary gaskets and worn components.

Independent Repair Facility

Unlike OEM shops, we use our own inventory to handle most rebuilds. That cuts down on lead time and gets your unit back faster.

In-house parts inventory eliminates OEM lead time delays for REXROTH Z4WE6E68-21/AG24NZ45

Frequently Asked Questions

Yes. Our repairs include our standard 1-year parts and labor warranty covering parts and labor.

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

Send the unit in whatever condition it’s in. We clean everything during teardown before inspection begins.

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.

We regularly work on units with missing labels. Send us a few images and any visible part numbers, and we can usually match it.

Disassembly and Rebuild Procedure

Every REXROTH Z4WE6E68-21/AG24NZ45 gets a controlled teardown on our bench. We document condition, replace what’s needed, and reassemble to proper operating condition.

  • 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.
  • 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

We carry out full diagnostics on every valve, including flow gain, leakage, pressure shift, and frequency testing. Our test facility supports performance logging and report generation. Our performance testing verifies consistent performance.

Technical Specifications

Every REXROTH Z4WE6E68-21/AG24NZ45 we service is tested under real-world conditions. Our diagnostics verify performance against published specifications. Performance data and Cycle life data are available for purchase upon request.

Additional REXROTH Z4WE6E68-21/AG24NZ45 Services

Beyond standard refurbishment, we offer specialized reconditioning for your REXROTH Z4WE6E68-21/AG24NZ45 unit. Our overhaul process includes disassembly and reassembly to spec, using only new replacement components.

Lead Times and Support

As a specialist for REXROTH Z4WE6E68-21/AG24NZ45 services, NC Servo targets quick resolution with typical lead times of 1 to 2 weeks. Benefit from our dedicated support team to keep your systems running smoothly.

Parts and Inventory

With more than 17,000 valve units in inventory, we can often provide faster turnaround by sourcing parts in-house rather than waiting on OEM lead times.

Maintenance Tips

  • Replace inline filters according to maintenance schedules to maintain proper flow rates.
  • Keep hydraulic fluid clean and at proper levels for consistent valve operation.
  • Check valve alignment carefully to prevent undue stress on internal components.

Get a Free Evaluation for Your REXROTH Z4WE6E68-21/AG24NZ45

Request pricing, availability, and turnaround for your REXROTH Z4WE6E68-21/AG24NZ45. NC Servo provides warrantied repair with a 1-year warranty. Contact us to request 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.