Leybold V50 Turbovac 50 Turbo Molecular Pump – Obsolete Vacuum Series Spare Part

Technical Dossier

Product Details And Specifications

Leybold V50 Turbovac 50 Turbo Molecular Pump – Obsolete Vacuum Series Spare Part

When a turbo molecular pump fails in a legacy vacuum system, the consequences extend far beyond a single component. For semiconductor fabs, research institutions, coating lines, and analytical instrument manufacturers still operating Leybold Turbovac-series platforms, the discontinuation of the V50 / Turbovac 50 creates a hard operational boundary. A full system upgrade — new pump, controller, interface, and recommissioning — routinely runs into six figures. The alternative is locating verified stock of the original part. DriveKNMS holds physical inventory of the Leybold V50 Turbovac 50 (Part No. 85406, Assembly Ref. 2L80-001427-12, Control Ref. TPR4-05-A100T-X0009, Serial Ref. 886304/0). This is not a substitute or cross-reference — it is the original Leybold unit.

Technical Specifications

Note: Electrical and performance parameters (pumping speed, ultimate pressure, rotation speed, motor power) are not listed here to avoid inaccuracy. Please contact us with your system documentation for parameter verification before ordering.

Solving the Discontinued Hardware Crisis

The Leybold Turbovac 50 / V50 was a workhorse in high-vacuum applications for decades. Its compact footprint, direct-drive architecture, and compatibility with a wide range of backing pumps made it a standard selection for OEM instrument builders and process engineers throughout the 1990s and 2000s. Leybold has since consolidated its turbo pump portfolio around newer platforms, leaving operators of legacy equipment without a factory supply channel.

The practical consequence is this: when a V50 fails, the system it serves goes offline. If no verified spare exists on-site, the facility faces a choice between an extended equipment search — often measured in weeks — or committing to a capital upgrade that may not be budgeted for the current fiscal year. For a production line where vacuum integrity is a process requirement, neither option is acceptable.

Extending the service life of a Leybold Turbovac 50 installation by five to ten years is a defensible asset management decision. The pump itself, when properly maintained and supported by verified spare units, continues to perform within its original specification envelope. The control electronics, bearing systems, and rotor assemblies are known quantities. There is no retraining burden, no software migration, and no process revalidation required — provided the replacement unit is a genuine original-specification component.

DriveKNMS sources, inspects, and holds physical stock of discontinued Leybold turbo pump units specifically to support facilities in this position. Our inventory is not sourced from unknown secondary markets. Each unit passes a documented inspection protocol before it is offered for sale.

Condition & Reliability Assurance

Obsolete turbo molecular pumps present specific failure modes that differ from standard mechanical wear. Our 5-step QA protocol for the V50 / Turbovac 50 addresses the failure patterns most commonly observed in units that have been in storage or removed from service:

Step 1 – Electrolytic Capacitor Assessment: Control board capacitors are inspected for electrolyte leakage, bulging, and ESR degradation. Aged capacitors are the leading cause of controller failure in stored units and are replaced where necessary before any unit is offered for sale.

Step 2 – Firmware and Controller Version Verification: The control module firmware version is documented and cross-referenced against known compatibility requirements for the target system. Units with mismatched or corrupted firmware are not offered as drop-in replacements without disclosure.

Step 3 – Connector and Pin Corrosion Inspection: All electrical connectors, signal pins, and power terminals are inspected under magnification for oxidation, fretting corrosion, and mechanical damage. Affected contacts are cleaned or the unit is flagged accordingly.

Step 4 – Rotor and Bearing Condition Check: The rotor assembly is inspected for physical damage and bearing condition is assessed. Units showing evidence of bearing failure or rotor contact are not offered for sale.

Step 5 – Documentation and Traceability: Each unit is assigned an internal inspection record. Part number, assembly reference, serial reference, and inspection findings are documented and provided to the buyer on request.

Key Features for System Maintenance

Drop-in replacement: The V50 / Turbovac 50 is a direct mechanical and electrical replacement for the original installed unit. No modifications to the vacuum system flange, backing pump interface, or control wiring are required.

No reprogramming required: The pump controller retains its original configuration. There is no requirement to re-enter process parameters or recalibrate the system after installation.

No engineering rework: Substituting a non-original pump type into a legacy system typically requires mechanical adapters, electrical interface modifications, and process revalidation. Using an original-specification V50 eliminates all of these costs.

Immediate availability: Stock is held physically at our facility. Lead time is not subject to manufacturer production schedules.

Long-term spares strategy: Facilities managing multiple Leybold Turbovac installations should consider holding at least one verified spare unit on-site. The cost of a single unplanned production stoppage attributable to pump failure will, in most cases, exceed the cost of a spare unit by a significant margin. A documented spares holding policy also satisfies maintenance audit requirements in regulated industries.

FAQ

Q: What warranty applies to an obsolete part?
A: We offer a 90-day warranty covering verified functional defects identified during our QA process. Warranty terms are confirmed in writing at the time of sale. Extended warranty arrangements can be discussed for volume orders.

Q: How do I know the unit is genuine and not a counterfeit or misrepresented part?
A: The part number, assembly reference, and serial reference are physically verified against the unit before sale. Our inspection documentation is available to buyers. We do not relabel or remanufacture units.

Q: Is the unit new or refurbished?
A: Unit condition (new old stock, tested serviceable, or refurbished) is disclosed at the time of inquiry. We do not represent a refurbished unit as new. Contact us with your requirement and we will confirm the condition of available stock.

Q: Should we hold multiple spare units?
A: For facilities with more than one Leybold Turbovac 50 installation, holding two spare units is a standard risk mitigation practice. As original stock is finite and not replenished by the manufacturer, availability will decrease over time. Procurement decisions made now carry lower cost and lower risk than procurement decisions made under production pressure.

Q: Can you source other Leybold Turbovac series parts?
A: Yes. DriveKNMS specializes in obsolete and hard-to-find industrial automation and vacuum components. Contact us with your part number and we will advise on availability.