Valve Overview

We’ve serviced hundreds of REXROTH 0811-404-646 units over the years. Each one goes through the same controlled teardown, parts replacement, and testing process.

Teardown and Rebuild Steps

We specialize in the overhaul of your REXROTH 0811-404-646, including the replacement of all necessary gaskets and worn components.

Frequently Asked Questions

Yes, rush service is available for an additional fee. Let us know your deadline when you submit your request.

Yes, our standard 1-year parts and labor warranty is standard on all repairs. Details are provided with your service report.

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

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

We give you a straight assessment after inspection. If repair doesn’t make sense, we’ll let you know and discuss alternatives.

About Our Shop

We stock common wear parts in-house, so most rebuilds don’t require outside sourcing. Less waiting, faster turnaround.

One-year warranty on all REXROTH 0811-404-646 valve repairs

Repair Process

Each valve goes through teardown to expose wear and buildup. After mineral bath cleaning, we replace damaged parts and reassemble the unit to spec.

  • 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.
  • Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.
  • Final Performance Verification: After reassembly, each valve is bench-tested against published performance specifications.

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 proper functionality.

REXROTH 0811-404-646 Specifications

Every REXROTH 0811-404-646 we service is tested under typical applications. Our diagnostics verify performance against published specifications. Performance data and Technical diagrams are available for purchase upon request.

Repair, Rebuild and Exchange Options

Beyond standard refurbishment, we offer specialized repairs for your REXROTH 0811-404-646 unit. Our disassembly process includes pressure testing and internal inspection, using only replacement replacement components.

Maintenance Tips

  • Monitor operating temperatures to identify potential issues before failure occurs.
  • Schedule preventive maintenance intervals based on duty cycle, not just calendar time.
  • Check valve alignment carefully to prevent undue stress on internal components.

Need Your REXROTH 0811-404-646 Back Online?

Request pricing, availability, and turnaround for your REXROTH 0811-404-646. NC Servo Technology provides experienced repair with a 1-year warranty. Contact us to set up 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.