About This Unit

NC Servo Tech provides repair and reconditioning for the REXROTH 4WE6E60/EW110N9Z55L. With in-house tooling and stocked parts, we keep turnaround times short.

How We Repair Your Unit

Our repair process for the REXROTH 4WE6E60/EW110N9Z55L begins with teardown and mineral bath cleaning to assess all components.

Frequently Asked Questions

Yes. Every unit goes through diagnostic testing and we provide an assessment before moving forward.

Yes. If the unit can’t be repaired, we contact you with options before doing anything further.

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

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

We can often prioritize urgent jobs. Note it on your request form and we’ll let you know what’s possible.

Independent Repair Facility

We’ve built our shop around one thing: industrial repair. With decades of hands-on experience and deep product knowledge, we deliver consistent results.

Specializing in REXROTH 4WE6E60/EW110N9Z55L servo valve technology for over five decades

Disassembly and Rebuild Procedure

Every REXROTH 4WE6E60/EW110N9Z55L 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 undergoes bench-testing against published performance specs.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.
  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.

Diagnostic Testing

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 functional testing verifies proper functionality.

Lead Times and Support

As a focused repair facility for REXROTH 4WE6E60/EW110N9Z55L services, NC Servo Tech targets quick resolution with typical lead times of 1 to 3 weeks. Benefit from our responsive technical support to keep your systems running smoothly.

Maintenance Tips

  • Conduct thorough visual inspections for wear or leaks during routine maintenance.
  • Schedule preventive maintenance intervals based on duty cycle, not just calendar time.
  • Keep hydraulic fluid clean and at proper levels for consistent valve operation.

Get an Expert Repair for Your REXROTH 4WE6E60/EW110N9Z55L

Request pricing, availability, and turnaround for your REXROTH 4WE6E60/EW110N9Z55L. NC Servo Tech provides independent repair with a 1-year warranty. Contact us to start your repair.

Request a Quote View All REXROTH Products Shop REXROTH Inventory

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.