Introduction

Bently Nevada’s 330105-02-12-10-02-05 3300 XL Reverse Mount Probe delivers accurate displacement and vibration monitoring in applications with limited installation space. Its robust 8 mm sensing technology, combined with flexible 1.0-meter cabling, allows engineers to monitor critical rotating equipment reliably. Designed for industrial environments, it provides consistent performance under vibration, temperature changes, and oil contamination, supporting predictive maintenance and long-term machinery health monitoring.

Technical Specifications

Parameter	Details
Model	330105-02-12-10-02-05
Series	3300 XL
Probe Type	8 mm Reverse Mount Eddy-Current Probe
Total Length	1.0 m
Weight	0.323 kg
Measurement Principle	Eddy-current displacement
Primary Use	Shaft vibration & position monitoring
System Compatibility	3300 XL Proximitor modules

Recommended Related Models

Model	Description
330105-02-12-10-02-00	Reverse mount probe variant
330105-02-12-05-02-05	Shorter 0.5-meter reverse mount probe
330105-02-12-10-01	Alternate mechanical configuration
330130-040-00	Standard 3300 XL proximity probe
330103-00-04	8 mm alternative tip design
330171-00-12	Extension cable for 3300 XL system
330180-51-00	High-temperature proximity probe
330185-01-00	Shaft monitoring probe for turbines
330196-XX-XX	Shielded cabling for noise-prone plants
330980-50-00	OEM-specific proximitor module

Popular Related Models

Model	Description
330104-00-04	Widely used turbine probe
330107-00-10	High-sensitivity eddy-current probe
330103-00-07	Turbine-grade 8 mm probe
330130-065-00	Standard industrial probe
330180-90-00	High-temperature monitoring probe
330171-50-00	Common extension cable for 3300 XL system
330185-02-12	Rotor-vibration monitoring probe
330178-00-05	OEM compressor probe
330190-08-10	Long-run extension cable
330130-00-05	Standard eddy-current vibration probe

Applications

The 330105-02-12-10-02-05 Reverse Mount Probe is engineered for industrial machinery where access from the front side is limited. Its reverse-mount design allows installation in confined bearing housings, turbine pedestals, and compressors while maintaining precise shaft displacement and vibration monitoring. It is widely used in gas turbines, steam turbines, centrifugal compressors, and high-speed industrial pumps, supporting early detection of rotor imbalance, misalignment, or bearing degradation.

Advantages

Reverse-mount design enables installation in tight or obstructed machinery spaces
8 mm eddy-current sensing ensures precise, linear measurement of shaft vibration and displacement
Extended 1.0-meter cable allows flexible routing without signal degradation
Rugged construction resists temperature extremes, vibration, and oil contamination
Full compatibility with 3300 XL Proximitor modules, enabling seamless integration into existing monitoring systems

FAQs

What is the linear range of the 8 mm reverse-mount probe?
The probe supports the standard 3300 XL linear range of approximately 2 mm dynamic displacement.
How does the 1.0-meter cable affect signal performance?
It is factory-matched to the 3300 XL Proximitor system, maintaining accurate linearity and signal integrity.
Which target materials are optimal for measurement?
Ferromagnetic shaft materials such as 4140 steel provide the best linearity and sensitivity.
Does reverse mounting impact measurement accuracy?
Accuracy is preserved as long as the probe gap is properly adjusted; reverse mounting does not reduce precision.
What is the probe’s frequency response?
It can track high-frequency shaft vibration signals up to several kilohertz.
Is this probe interchangeable with other 330105 variants?
Electrically yes, but mechanical fit and mounting dimensions must match the application.
How does it perform in oil-contaminated environments?
Sealed construction allows stable operation even in oil or grease-laden environments.
Does temperature variation affect output stability?
The probe includes temperature compensation, ensuring minimal drift across typical operating ranges.
Can it be used with non-Bently 3300 Proximitor modules?
It is recommended only with 3300 XL Proximitor modules to ensure accurate calibration.
What gap voltage is expected during installation?
A stable, monotonic gap voltage curve is observed when the probe approaches the target, indicating proper alignment.