Introduction
The Bently Nevada 330173-07-11-10-02-00 is a 3300 5 mm proximity probe designed for precise, non-contact measurement of shaft position and dynamic movement in rotating machinery. It belongs to the 330173 metric probe family, which uses an M8 × 1 mounting thread and a without-armor construction. When combined with a compatible 3300 XL extension cable and Proximitor sensor, the 3300 5 mm transducer system provides an output proportional to the distance between the probe tip and the conductive target, supporting both static position and dynamic vibration measurement.
This configuration has a particularly useful combination of a 70 mm unthreaded length, 110 mm overall case length, 1.0 m cable, standard miniature coaxial ClickLoc connector, and 00 agency-approval option. The extended unthreaded section makes it suitable for installations where the sensing point is positioned farther from the mounting surface.
For replacement projects, the full ordering number should be matched rather than selecting a probe solely by its nominal 5 mm sensing class. The mechanical length, cable arrangement, thread configuration, and connector style all contribute to installation compatibility.
Technical Specifications
The 330173 family identifies an M8 × 1, without-armor 3300 5 mm probe. The remaining ordering characters define the unthreaded length, case length, cable length, connector option, and approval configuration.
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model | 330173-07-11-10-02-00 |
| Product Type | 3300 5 mm Proximity Probe |
| Sensing Technology | Eddy-current, non-contact |
| Probe Family | 3300 5 mm |
| Base Model | 330173 |
| Mounting Thread | M8 × 1 |
| Construction | Without armor |
| Unthreaded Length | 70 mm (2.76 in) |
| Overall Case Length | 110 mm (4.33 in) |
| Total Cable Length | 1.0 m (3.3 ft) |
| Connector | Miniature coaxial ClickLoc connector |
| Cable Type | Standard cable |
| Cable Impedance | 75 Ω |
| Probe Tip Diameter | 5.2 mm (0.21 in) |
| Probe Case Material | Stainless steel |
| Probe Tip Material | PPS |
| Minimum Cable Bend Radius | 25.4 mm (1.0 in) |
| Typical Probe Weight | 323 g (11.39 oz) |
| Agency Approval | 00 — Agency approval not required |
Applications
Turbine Shaft Position Monitoring
The probe can be installed in compatible steam or gas turbine monitoring arrangements to measure shaft position and dynamic rotor movement. This information can support machinery protection and condition-based maintenance.
Compressor Vibration Monitoring
Compressors rely on accurate rotor monitoring to identify changes in vibration and shaft position. The 3300 5 mm system provides a non-contact measurement solution for compatible compressor installations.
Generator Monitoring
For generators and other critical rotating equipment, proximity probes can form part of a shaft-position and vibration-monitoring system. The extended 70 mm unthreaded section can be useful when the sensing location is set relatively far from the mounting point.
Pump and Motor Applications
The compact 5.2 mm sensing tip and M8 × 1 mounting configuration make this probe suitable for compatible pumps, motors, and other rotating assets requiring continuous shaft displacement measurements.
Fluid-Film Bearing Machines
The 3300 5 mm system is particularly suited to machinery using fluid-film bearings. It can provide information about both the static position of the shaft and its dynamic vibration when used with the appropriate Proximitor sensor and extension cable.
Keyphasor and Speed Measurement
Compatible 3300 5 mm system configurations can also be used for Keyphasor and speed-measurement applications, extending the usefulness of the probe beyond conventional radial vibration monitoring.
Deep or Offset Probe Installations
The 70 mm unthreaded length is especially valuable where the probe must extend through a mounting structure before reaching the required measurement location. It provides additional installation reach without changing the basic 3300 5 mm sensing platform.
Industrial Replacement Projects
The exact configuration is well suited to maintenance projects where an existing probe has the same 70 mm unthreaded section, 110 mm case, 1.0 m cable, standard ClickLoc connector, and M8 × 1 mounting arrangement.
Advantages
Extended 70 mm Unthreaded Section
The major advantage of this configuration is its 70 mm unthreaded length. This provides greater installation reach than many standard 330173 probes and can simplify installations where the shaft target is recessed relative to the mounting surface.
110 mm Overall Case
The 110 mm case length complements the extended unthreaded section and gives this model a distinctive mechanical profile within the 3300 5 mm range.
M8 × 1 Metric Mounting
The M8 × 1 thread provides a compact metric mounting interface and clearly distinguishes the 330173 series from the 330171 family, which uses 1/4-28 UNF threading.
5.2 mm Probe Tip
The compact 5.2 mm sensing tip provides non-contact measurement in machinery locations where available installation space is limited.
Reliable Eddy-Current Measurement
The probe operates through eddy-current sensing, allowing the distance between the probe and a conductive target to be measured without physical contact. This is particularly useful for continuously rotating shafts.
1.0 m Standard Cable
The 1.0 m cable offers a practical connection length for many machinery layouts without the excess cable associated with longer configurations.
ClickLoc Connector
The miniature coaxial ClickLoc connector provides a compact interface for compatible 3300 system components and supports practical installation in industrial monitoring cabinets and machinery areas.
Proven 3300 5 mm Platform
The 3300 5 mm transducer system is designed as a complete measurement system comprising the probe, compatible extension cable, and Proximitor sensor. The system is intended to provide stable measurement of shaft position and vibration across a broad range of rotating-machinery applications.
Exact Configuration Identification
For maintenance departments and spare-parts buyers, the full 330173-07-11-10-02-00 number provides a much more reliable identification method than simply specifying “3300 5 mm probe.” The extended unthreaded length is especially important because probes with the same diameter can have very different mechanical dimensions.
Technical FAQs
1. What is the Bently Nevada 330173-07-11-10-02-00?
It is a 3300 5 mm proximity probe with an M8 × 1 thread, without-armor construction, 70 mm unthreaded length, 110 mm overall case length, 1.0 m standard cable, miniature ClickLoc connector, and 00 agency-approval option.
2. What does 330173 identify?
330173 identifies the 3300 5 mm probe configuration with an M8 × 1 thread and without armor.
3. What does the first “07” mean?
The first 07 specifies a 70 mm unthreaded-length option in the metric configuration.
4. What does the second “11” specify?
The 11 identifies the 110 mm overall case-length option, approximately 4.33 inches.
5. How long is the cable?
The 10 cable option specifies a 1.0-meter (3.3-foot) total cable length.
6. What connector does the probe use?
The 02 configuration specifies a miniature coaxial ClickLoc connector with standard cable.
7. Is the probe armored?
No. The 330173 family is the M8 × 1, without-armor configuration. The 330174 family is the corresponding M8 × 1 version with armor.
8. What is the probe tip diameter?
The 3300 5 mm probe uses a 5.2 mm (0.21 in) diameter probe tip.
9. How much does the probe weigh?
The typical 3300 5 mm probe weight is approximately 323 g (11.39 oz). This figure refers to the probe rather than a complete system or packaged shipment.
10. Can it replace a 330173 probe with a shorter unthreaded section?
Not automatically. Although the probes may share the same M8 × 1 thread and 5 mm sensing platform, the 70 mm unthreaded length and 110 mm case length can significantly affect installation depth. The original probe's complete configuration should be matched before replacement.
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