Key Details

The REXROTH 4WS2EM10-45/20B2ET31578AM is one of many models we routinely service. Our process includes disassembly, cleaning, and reassembly using reliable components.

About Our Shop

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

50+ years of expertise in REXROTH 4WS2EM10-45/20B2ET31578AM Valve Repair

Frequently Asked Questions

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

Yes. Send us photos of the unit from multiple angles. Our team has serviced thousands of models and can often ID them visually.

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

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

It depends on the unit and scope of work. We provide an estimated timeline after initial evaluation.

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.

  • Final Performance Verification: After reassembly, each valve is bench-tested against published performance specifications.
  • Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.
  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.

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 standard test fluids to match your operational needs. Our functional testing verifies proper functionality.

Documentation on Request

For transparent insights into your REXROTH 4WS2EM10-45/20B2ET31578AM, we can provide access to service logs and repair records. This transparency offers you record-keeping and aids in long-term maintenance planning.

Maintenance Tips

  • Schedule preventive maintenance intervals based on duty cycle, not just calendar time.
  • Replace inline filters according to maintenance schedules to maintain proper flow rates.
  • Keep hydraulic fluid clean and at proper levels for consistent valve operation.

Let Us Repair Your REXROTH 4WS2EM10-45/20B2ET31578AM

Request pricing, availability, and turnaround for your REXROTH 4WS2EM10-45/20B2ET31578AM. NC Servo Tech provides independent repair with a 1-year warranty. Contact us to schedule 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.