1. Product Introduction
The Bently Nevada 330905-07-17-05-02-05 is a high-precision 3300 XL 8 mm Proximity Probe designed for continuous monitoring of rotating machinery operating conditions. It is mainly used for measuring shaft vibration, radial displacement, axial position changes, and relative movement between the rotating shaft and machine structure.
This model uses advanced eddy current sensing technology to provide accurate non-contact measurement. The probe detects the change in distance between the probe tip and the conductive shaft surface and converts this mechanical displacement into an electrical signal for machinery monitoring and protection systems.
The 330905-07-17-05-02-05 belongs to the 3300 XL 8 mm Proximity Probe Series. It is designed for applications requiring reliable vibration measurement, compact installation, stable signal transmission, and long operating life.
The probe is widely used in critical rotating equipment, including:
- Steam turbines
- Gas turbines
- Centrifugal compressors
- Generators
- Pumps
- Motors
- Turbo machinery systems
The product provides continuous information about shaft movement and vibration conditions, helping operators evaluate machine health, improve maintenance planning, and reduce unexpected equipment failures.
The 330905-07-17-05-02-05 configuration is suitable for machinery monitoring systems that require a compact 8 mm sensing probe design with reliable performance in industrial environments.
2. Product Specification Parameters
| Parameter |
Description |
| Model |
330905-07-17-05-02-05 |
| Product Series |
3300 XL 8 mm Proximity Probe Series |
| Product Type |
Eddy Current Proximity Probe |
| Measurement Principle |
Eddy Current Displacement Measurement Technology |
| Probe Diameter |
8 mm |
| Probe Configuration |
Threaded proximity probe |
| Thread Size |
3/8-24 UNF mounting thread |
| Probe Tip Diameter |
Approximately 8 mm |
| Probe Length |
Approximately 50 mm configuration |
| Electrical Connection Type |
Miniature coaxial connector |
| Connector Design |
Industrial signal connection interface |
| Measurement Function |
Shaft vibration and displacement measurement |
| Measurement Direction |
Radial vibration and axial position monitoring |
| Measurement Range |
Standard 8 mm sensing range |
| Target Material |
Conductive metal shaft surface |
| Operating Temperature Range |
Approximately -35°C to +177°C |
| Storage Temperature Range |
Approximately -40°C to +120°C |
| System Compatibility |
3300 XL Proximitor Sensor system |
| Installation Method |
Threaded mounting installation |
| Output Signal Type |
Dynamic vibration signal and static displacement signal |
| Accuracy |
High precision shaft displacement measurement |
| Response Performance |
Suitable for high-speed rotating machinery |
| Environmental Capability |
Industrial vibration and temperature resistant design |
| Application Equipment |
Turbines, compressors, pumps, generators, motors |
| Dimensions |
Probe diameter approximately 8 mm, overall length approximately 50 mm |
| Weight |
Approximately 0.07 kg |
3. Product Structure and Working Principle
The 330905-07-17-05-02-05 proximity probe consists of a sensing tip, probe housing, mounting thread, internal sensing coil, and electrical connector.
The sensing tip generates an electromagnetic field directed toward the rotating shaft surface. During machine operation, the shaft position changes slightly due to different mechanical conditions.
Typical causes of shaft movement include:
- Rotor imbalance
- Shaft misalignment
- Bearing wear
- Thermal expansion
- Mechanical loading changes
- Rotor instability
When the distance between the probe tip and the shaft changes, the electromagnetic field changes accordingly. The probe converts this variation into a proportional electrical output signal.
The monitoring system analyzes the signal to determine:
- Shaft vibration level
- Rotor position
- Mechanical stability
- Equipment operating condition
The complete monitoring system generally includes:
- Proximity Probe
- Extension Cable
- Proximitor Sensor
- Monitoring Module
The non-contact measurement method allows continuous operation without physical wear between the probe and rotating shaft.
4. Product Applications
4.1 Steam Turbine Monitoring
Steam turbines require accurate vibration and displacement monitoring to maintain reliable operation.
The 330905-07-17-05-02-05 can be applied for:
- Shaft vibration measurement
- Rotor displacement monitoring
- Thrust position monitoring
- Bearing condition evaluation
- Rotor stability analysis
The probe helps detect abnormal shaft movement before serious mechanical problems occur.
4.2 Gas Turbine Systems
Gas turbines operate at high speed and under demanding environmental conditions.
The product supports:
- Rotor vibration monitoring
- Shaft position measurement
- Equipment protection
- Fault detection
- Predictive maintenance
It provides stable measurement performance for long-term turbine operation.
4.3 Compressor Applications
Compressors require reliable monitoring because rotor problems can affect production efficiency and equipment safety.
Typical applications include:
- Centrifugal compressors
- Process compressors
- Gas compressors
- Turbo compressors
The probe helps monitor:
- Rotor imbalance
- Shaft displacement
- Mechanical looseness
- Abnormal vibration
4.4 Pump and Motor Monitoring
Industrial pumps and motors often operate continuously.
The proximity probe provides:
- Shaft vibration measurement
- Rotor movement monitoring
- Equipment condition information
- Machinery protection signals
4.5 Generator Equipment
Generators require stable rotor operation for reliable power production.
The probe supports:
- Rotor position monitoring
- Shaft vibration measurement
- Mechanical condition analysis
- Maintenance planning
5. Product Advantages
5.1 High Measurement Accuracy
The eddy current sensing method provides accurate detection of shaft displacement.
It can measure very small movement changes, making it suitable for critical machinery applications.
5.2 Non-Contact Measurement
The probe does not physically touch the rotating shaft.
Main benefits:
- No mechanical friction
- Reduced component wear
- Longer service life
- Stable measurement performance
5.3 Compact Installation Design
The shorter probe configuration provides flexibility for installation in limited spaces.
It is suitable for machinery structures where standard-length probes cannot be easily installed.
5.4 Stable Signal Transmission
The product provides reliable measurement signals during continuous operation.
This allows monitoring systems to perform accurate equipment analysis.
5.5 Strong Industrial Durability
The probe is designed for demanding industrial conditions.
It can withstand:
- Continuous vibration
- Temperature changes
- Long operating periods
- Heavy machinery environments
5.6 Supports Predictive Maintenance
Continuous monitoring helps identify early equipment problems.
Benefits include:
- Reduced downtime
- Improved maintenance efficiency
- Increased equipment reliability
- Extended machine operating life
6. Brand Information
| Item |
Description |
| Brand |
Bently Nevada |
| Product Category |
Industrial Machinery Monitoring Components |
| Main Technology |
Eddy Current Vibration and Displacement Measurement |
| Product Function |
Shaft Position Monitoring and Machinery Protection |
| Typical Industries |
Power Generation, Oil and Gas, Petrochemical, Manufacturing, Marine |
7. Product Series Information
| Item |
Description |
| Product Series |
3300 XL Series |
| Product Family |
3300 XL 8 mm Proximity Probe Series |
| Sensor Technology |
Eddy Current Measurement Technology |
| Probe Diameter |
8 mm |
| Main Function |
Shaft vibration and displacement monitoring |
| System Components |
Probe + Extension Cable + Proximitor Sensor |
| Typical Applications |
Turbines, Compressors, Pumps, Generators |
8. Recommended Related Models from the Same Series
| Model |
Main Parameters |
Dimensions |
Weight (kg) |
Application |
| 330905-07-17-05-02-05 |
3300 XL 8 mm proximity probe, compact 50 mm configuration |
Diameter 8 mm, length approx. 50 mm |
0.07 kg |
Compact machinery monitoring |
| 330905-07-17-10-02-05 |
3300 XL 8 mm proximity probe, standard length configuration |
Diameter 8 mm, length approx. 100 mm |
0.08 kg |
Turbine and compressor systems |
| 330905-06-10-50-02-05 |
3300 XL 8 mm short proximity probe configuration |
Diameter 8 mm, length approx. 50 mm |
0.07 kg |
Pumps and motors |
| 330905-06-10-10-02-05 |
3300 XL 8 mm standard industrial probe |
Diameter 8 mm, length approx. 100 mm |
0.08 kg |
General rotating machinery |
| 330906-07-12-10-02-05 |
Larger diameter proximity probe for heavy machinery |
Diameter 11 mm, length approx. 100 mm |
0.12 kg |
Large rotating equipment |
9. Recommended Popular Models from the Same Brand
| Model |
Main Parameters |
Dimensions |
Weight (kg) |
Application |
| 330103-00-04-10-02-00 |
3300 XL 8 mm proximity probe, standard monitoring configuration |
Diameter 8 mm, length approx. 100 mm |
0.08 kg |
Turbine monitoring |
| 330180-50-00 |
Proximitor Sensor module for displacement signal processing |
Approx. 100 × 50 × 25 mm |
0.15 kg |
Monitoring systems |
| 330130-040-00-00 |
Extension cable assembly for proximity probe systems |
Length approx. 1 meter |
0.10 kg |
Signal connection |
| 3500/42M |
Four-channel vibration monitoring module supporting displacement measurement |
Approx. 120 × 100 × 25 mm |
0.25 kg |
Machinery protection |
| 330730-040-00-00 |
Flexible extension cable assembly for industrial monitoring |
Length approx. 1 meter |
0.11 kg |
Rotating equipment |
10. Product Selection Analysis
The 330905-07-17-05-02-05 is designed for applications requiring accurate shaft monitoring in areas where installation space is limited.
Its compact 50 mm configuration provides easier installation while maintaining the reliable measurement performance of the 3300 XL 8 mm proximity probe family.
This model is especially suitable for:
- Compact rotating machinery
- High-speed equipment
- Industrial condition monitoring systems
- Predictive maintenance applications
- Machinery protection installations
The combination of compact structure, accurate measurement capability, and reliable non-contact sensing makes it suitable for demanding industrial environments.
11. Product Summary
The Bently Nevada 330905-07-17-05-02-05 is a professional 3300 XL 8 mm proximity probe designed for rotating machinery condition monitoring.
It provides accurate shaft vibration and displacement measurement through eddy current sensing technology. The compact design, stable output performance, and strong environmental resistance make it suitable for turbines, compressors, pumps, generators, and other industrial rotating equipment.
The main advantages include:
- High precision shaft measurement
- Non-contact sensing operation
- Compact installation structure
- Stable signal output
- Strong industrial durability
- Long operating service life
- Reliable machinery protection capability
The 330905-07-17-05-02-05 provides an effective solution for equipment monitoring, fault diagnosis, and predictive maintenance in industrial rotating machinery applications.
