Bently Nevada 330104-01-06-50-02-05 – Comprehensive Product Overview

1. Product Overview

The Bently Nevada 330104-01-06-50-02-05 is a precision eddy current proximity probe designed for non-contact measurement of shaft vibration, displacement, and rotor position in industrial rotating machinery.

It belongs to the 3300 XL Proximity Probe Series, recognized for high-reliability and robust performance in industrial environments such as turbines, compressors, pumps, and large motors. This model features a longer probe case (~50 mm), a specialized connector configuration, and a 2-meter system cable, optimized for installations requiring extended cable runs or complex machinery layouts.

The probe ensures accurate, repeatable measurements that are essential for machinery protection, predictive maintenance, and condition monitoring.

2. Brand

• Brand: Bently Nevada
• Industry Role: Leader in vibration monitoring and condition-based maintenance instrumentation for rotating machinery.
• Reputation: Known for durable, precise, and industrial-grade probes that maintain performance under extreme temperature, vibration, and environmental conditions.

3. Series

• Series: 3300 XL Proximity Probe Series
• Technology: Eddy current, non-contact
• Key Components: Probe, system cable, proximitor electronics
• Applications: Radial shaft vibration, shaft displacement, rotor position, and keyphasor signals

The 3300 XL series emphasizes mechanical robustness, long-term stability, and modular integration with protection and monitoring systems.

4. Technical Specifications

This setup ensures high stability, accurate measurement, and adaptability to industrial monitoring systems.

5. Product Description

The 330104-01-06-50-02-05 proximity probe is designed for non-contact, continuous monitoring of machinery vibration and shaft displacement.

It uses eddy current sensing to generate an analog voltage proportional to the gap between the probe tip and the shaft. The non-contact design minimizes wear and maintenance needs while providing highly repeatable measurements.

Its longer case (~50 mm) allows installation in tight machine housings, and the 2-meter cable enables routing to monitoring electronics that may be positioned remotely. Its stainless steel construction and oil-resistant cable ensure durability in harsh industrial conditions, including exposure to oil, dust, vibration, and moderate temperatures.

Installation is achieved via threaded mounting (M10 × 1), and the probe is compatible with proximitor electronics for delivering radial vibration, rotor position, and keyphasor signals.

6. Applications

Typical applications include:

• Steam turbines – radial vibration and shaft displacement monitoring
• Gas turbines – rotor dynamics tracking
• Centrifugal compressors – imbalance and vibration monitoring
• Industrial pumps – vibration and run-out measurement
• Electric motors – shaft vibration analysis
• Gearboxes – rotor position and vibration monitoring

Key functionalities supported:

• Radial shaft vibration amplitude measurement
• Rotor axial displacement tracking
• Keyphasor signals for phase and speed reference
• Integration with predictive maintenance and machinery protection systems

7. Product Advantages

• Non-contact measurement – eliminates mechanical wear, extends service life.
• High accuracy and repeatability – stable analog output for precise monitoring.
• Longer case design (~50 mm) – fits industrial housings with clearance constraints.
• Extended cable (2 meters) – allows flexible routing to remote electronics.
• Robust construction – stainless steel probe body and oil-resistant cable.
• IP67 protection – dust, moisture, and vibration resistance.
• Broad operating temperature – -40°C to +85°C.
• Easy installation – threaded mounting for standard machinery interfaces.

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