About This Unit

Whether the issue is age, wear, or contamination, the VICKERS SM4-20(20)76-80/40-50-R can often be restored. NC Servo Tech applies the same structured approach to every rebuild.

Why Repair With NC Servo

NC Servo Tech operates independently, so we’re not tied to manufacturer delays or restrictions. That means more flexibility when your system is down.

Specializing in VICKERS SM4-20(20)76-80/40-50-R servo valve technology for over five decades

Frequently Asked Questions

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.

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

Yes. We diagnose first, then provide a repair recommendation with our findings. No work begins without your approval.

No cleaning required. Our repair process includes disassembly and cleaning of all components.

You’ll hear from us either way. If it’s not repairable, we’ll return the unit and provide our findings.

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.

  • Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.
  • Teardown: Every valve is disassembled for internal inspection.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.

Leak and Performance Testing

NC Servo Tech operates thirteen in-house 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 pre-shipment testing verifies consistent performance.

Industries We Serve

Our expert repair services for the VICKERS SM4-20(20)76-80/40-50-R are trusted across various sectors including Plastics & Injection Molding, Automotive, and Paper & Pulp. We understand the unique demands of valves in these environments.

Technical Specifications

Every VICKERS SM4-20(20)76-80/40-50-R we service is tested under real-world conditions. Our diagnostics verify performance against published specifications. Specification sheets and Performance data are available for purchase upon request.

Repair, Rebuild and Exchange Options

Beyond standard refurbishment, we offer specialized reconditioning for your VICKERS SM4-20(20)76-80/40-50-R unit. Our disassembly process includes mineral bath cleaning and leak testing, using only replacement replacement components.

Turnaround and Shipping

As a dedicated source for VICKERS SM4-20(20)76-80/40-50-R services, NC Servo Tech targets quick resolution with typical lead times of 1 to 2 weeks. Benefit from our responsive technical support 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

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

Get an Expert Repair for Your VICKERS SM4-20(20)76-80/40-50-R

Request pricing, availability, and turnaround for your VICKERS SM4-20(20)76-80/40-50-R. NC Servo Tech provides hands-on 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 VICKERS or any original equipment manufacturer (OEM), nor do we claim to be a VICKERS 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.