Bently Nevada 21000-28-05-00-047-04-02 Proximity Probe Housing Assembly – 3300 Series Proximity Transducer System
In high-speed rotating machinery — turbines, centrifugal compressors, boiler feed pumps, and generator sets — undetected shaft vibration or axial displacement anomalies can escalate from a minor deviation to a catastrophic mechanical failure within seconds. Without a mechanically sound and precisely installed proximity probe housing assembly, the eddy current probe cannot maintain its critical air gap. The entire vibration monitoring loop goes blind. The result: unplanned downtime, damaged rotors, and six-figure repair costs that could have been prevented. The Bently Nevada 21000-28-05-00-047-04-02 Proximity Probe Housing Assembly is the precision mechanical interface that keeps your condition monitoring system accurate, stable, and fully compliant with API 670 requirements.
Within the Bently Nevada 3300 Series ecosystem — the global benchmark for continuous machinery protection — the 21000-28-05-00-047-04-02 housing assembly occupies a foundational role. It provides the rigid, thermally stable mounting structure that positions the eddy current probe at the exact radial or axial location required for reliable shaft displacement measurement. Trusted by petrochemical plants, power generation facilities, LNG terminals, and offshore platforms across six continents, this component is an integral part of the most widely deployed machinery monitoring architecture in the world.
Technical Specifications
- Part Number / SKU: 21000-28-05-00-047-04-02
- Brand: Bently Nevada (Baker Hughes)
- Series: 3300 Series Proximity Transducer System
- Product Type: Proximity Probe Housing Assembly
- Sensing Technology: Eddy Current (Non-contact)
- Compatible Probe Thread: Per Bently Nevada 3300 Series OEM specification
- Material: Stainless steel / corrosion-resistant alloy (per OEM spec)
- Weight: 1,400 g (approx.)
- Compliance: API 670 compatible installation
- Condition Available: New / Surplus / Refurbished (specify on inquiry)
Note: All specifications are based on OEM documentation. Konmask.com does not fabricate or alter technical parameters. For detailed dimensional drawings or datasheet, contact our technical team.
Key Features & Benefits
- Precision Air Gap Maintenance: Machined to tight tolerances to hold the probe tip at the correct standoff distance, preserving measurement linearity and sensitivity across the full operating range.
- Vibration-Resistant Construction: Robust housing design withstands continuous mechanical vibration environments typical of rotating machinery installations in oil & gas and power generation.
- Corrosion-Resistant Materials: Suitable for harsh industrial environments including offshore platforms, chemical plants, and high-humidity process areas.
- Drop-In OEM Replacement: Designed as a direct replacement for existing 3300 Series installations — no field modification required, minimizing maintenance window duration.
- API 670 Ready: Supports full compliance with the American Petroleum Institute standard for machinery protection systems, critical for regulated facilities.
- Reduced Downtime Risk: Replacing a worn or damaged housing assembly during planned maintenance prevents unplanned outages caused by probe misalignment or mechanical failure of the mounting structure.
Industry & Equipment Applications
- Oil & Gas: Centrifugal compressors, gas turbines, steam turbines, and expanders on upstream, midstream, and downstream facilities
- Power Generation: Steam and gas turbine-generators, boiler feed pumps, induced draft fans
- Petrochemical & Refining: Reactor charge pumps, cracked gas compressors, process gas blowers
- LNG & Pipeline: Main refrigerant compressors, booster compressors, pipeline pumping stations
- Marine & Offshore: Propulsion turbines, auxiliary machinery on FPSOs and fixed platforms
- Pulp, Paper & Mining: Large rotating equipment requiring continuous vibration surveillance and API 670 compliance
System Integration & Compatible Parts
The 21000-28-05-00-047-04-02 housing assembly is designed to work within the complete Bently Nevada 3300 Series Proximity Transducer System, which typically includes:
- 3300 XL 8mm or 11mm Proximity Probes (e.g., 330103, 330104 series)
- 3300 Series Extension Cables
- 3300 Series Proximitor® Sensors / Signal Conditioners
- 3500 Series Machinery Protection Rack (monitor cards, I/O modules)
- System 1® Condition Monitoring Software
Contact Konmask.com to source compatible probes, cables, and Proximitor sensors as a complete assembly kit for your installation or MRO project.
Our Quality Assurance Process
- Source Verification: All Bently Nevada parts are sourced from authorized distributors, OEM surplus channels, or certified refurbishers with full traceability documentation.
- Visual & Dimensional Inspection: Each housing assembly is inspected for thread integrity, surface condition, and dimensional conformance before shipment.
- Documentation Package: Certificate of conformance, test reports (where available), and packing list provided with every order.
- Secure Packaging: Anti-static, moisture-barrier packaging with foam cushioning to prevent transit damage to precision components.
- Warranty: 12-month warranty against manufacturing defects (terms apply — contact us for details).
How to Order
- Submit an inquiry via the “Get a Quote” button or email [email protected]
- Provide your required quantity, delivery timeline, and destination country
- Our technical team will confirm availability, lead time, and pricing within 24 business hours
- Upon agreement, we issue a proforma invoice and arrange secure international shipping (DHL / FedEx / sea freight)
- Track your shipment with our dedicated logistics support team
Why Choose Konmask.com?
- ✅ Specialized in Industrial Automation & Control: We focus exclusively on PLC, DCS, vibration monitoring, and process control components — not a generalist marketplace.
- ✅ Global B2B Supply: Serving engineering firms, EPCs, plant maintenance teams, and MRO buyers in 50+ countries.
- ✅ Hard-to-Find Parts: We stock and source obsolete, long-lead, and critical-path components that OEM channels cannot deliver on short notice.
- ✅ Technical Pre-Sales Support: Our engineers verify cross-compatibility and advise on system integration before you commit to a purchase.
- ✅ Fast Response: Inquiry-to-quote in under 24 hours. Emergency sourcing available for critical plant situations.
- ✅ Transparent Documentation: Full traceability and compliance documentation provided as standard with every shipment.
Frequently Asked Questions
Q1: Is the 21000-28-05-00-047-04-02 a new or refurbished part?
A: We supply both new/surplus and professionally refurbished units depending on availability. The condition will be clearly stated in your quotation. All units pass our QA inspection regardless of condition.
Q2: Can this housing assembly be used with non-Bently Nevada probes?
A: This housing is engineered specifically for the Bently Nevada 3300 Series probe thread and dimensional specification. Using it with third-party probes is not recommended and may compromise measurement accuracy and system certification.
Q3: What is the lead time for this part?
A: Lead time varies by stock availability. In-stock units typically ship within 3–5 business days. For sourced units, lead time is 2–6 weeks. Contact us for a real-time availability check.
Q4: Do you provide export documentation for international shipments?
A: Yes. We provide commercial invoices, packing lists, certificates of origin, and certificates of conformance. We can also assist with customs documentation requirements for your destination country.
Q5: Can I order a complete 3300 Series probe assembly kit?
A: Yes. Konmask.com can source and supply complete kits including probe, extension cable, Proximitor sensor, and housing assembly. Please specify your system requirements when submitting your inquiry.
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