Product Overview

The Bently Nevada 21000-00-00-00-065-04-02 is a specialized, deep-reach proximity probe housing designed for critical machinery protection systems. This assembly features an extended 6.5-inch (165mm) sleeve, providing the necessary depth to access measurement points located deep within large equipment casings or thick-walled bearing pedestals. As a key component of the 3300 XL transducer ecosystem, it provides a ruggedized external mounting point that allows for the inspection and adjustment of vibration sensors without requiring a machine shutdown.

Constructed from premium-grade aluminum, the housing is engineered to withstand the thermal and mechanical stresses typical of turbine decks and compressor stations. It serves as an environmental shield, protecting the proximity probe and its delicate cable connections from contaminants while ensuring the structural rigidity required for high-accuracy displacement monitoring.

Key Technical Characteristics

The 21000 series housing is optimized for long-term reliability in Turbine Supervisory Instrumentation (TSI) applications where precision and durability are non-negotiable.

• Extended 6.5-Inch Sleeve: The "065" designation specifies a 165mm sleeve length, ideal for deep-mount applications where standard housings cannot reach the target shaft.

• Robust Aluminum Construction: Offers superior resistance to atmospheric corrosion and chemical exposure while maintaining a lightweight profile for easy field installation.

• Secure Threaded Interface: Features dual 3/4-14 NPT threaded ports for explosion-proof conduit integration, ensuring a sealed and safe signal path in hazardous industrial zones.

• Mechanical Integrity: The precision-machined sleeve minimizes probe resonance and deflection, preserving the signal fidelity required for accurate radial vibration and axial position data.

• Maintenance Efficiency: Designed to allow external probe gapping and replacement, significantly reducing maintenance man-hours during outages and preventing unnecessary machine breaches.

Technical Specifications

• Manufacturer: Bently Nevada (Baker Hughes)

• Model Number: 21000-00-00-00-065-04-02

• Sleeve Length: 6.5 Inches (165 mm)

• Housing Material: High-strength Aluminum

• System Compatibility: 3300 XL 8mm Proximity Systems

• Conduit Connections: 3/4-14 NPT

• Environmental Rating: Designed for oil-vapor and high-humidity zones

• Net Weight: 1.08 kg

• Country of Origin: USA

Industrial Applications

The 21000-00-00-00-065-04-02 housing is a vital asset for predictive maintenance in heavy industrial sectors. Its deep-mount design is frequently used for:

• Monitoring vibration in large steam and gas turbine bearing housings.

• Protecting probes on high-capacity centrifugal compressors and multi-stage pumps.

• Axial thrust position monitoring in large-scale hydroelectric generators.

• Safeguarding sensors in cooling tower gearboxes and industrial fan assemblies.