Product Overview
The Bently Nevada 330172-05-63-05-02-05 is a 3300 series 5 mm proximity probe with a 1/4-28 UNF thread, an armored lead, and a miniature coaxial ClickLoc connector. This exact configuration carries multiple agency approvals and is made in the USA.
As a sensing element for a 3300 XL eddy-current transducer system, this model measures shaft vibration or position without physical contact. Its 0.5 m total length and 6.3 in overall case length make it suitable for installations where the probe must reach the target through a limited space.
Key Specifications
All values below are tied to the Bently Nevada 330172-05-63-05-02-05 configuration. The transducer system reference conditions are +18°C to +27°C, -24 Vdc supply, a 10 kW load, an AISI 4140 steel target, and a probe gap of 1.27 mm (50 mils).
| Parameter |
Value |
| Product Type |
330172 3300 5 mm probe, 1/4-28 UNF thread, with armor |
| Unthreaded Length |
0.5 in |
| Overall Case Length |
6.3 in |
| Total Length |
0.5 m (1.6 ft) |
| Connector |
Miniature coaxial ClickLoc connector, standard cable |
| Agency Approvals |
Multiple approvals |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 303 or 304 stainless steel (SST) |
| Thread |
1/4-28 UNF |
| Maximum Thread Engagement |
0.375 in |
| Probe Cable |
75 Ω triaxial, fluoroethylene propylene (FEP) insulated |
| Connector Material |
Gold-plated brass or gold-plated beryllium copper |
| Power Supply |
-17.5 Vdc to -26 Vdc at 12 mA maximum consumption |
| Supply Sensitivity |
Less than 2 mV output change per volt input change |
| Output Resistance |
50 W |
| Probe DC Resistance |
7.45 ± 0.50 Ω for 0.5 m probe |
| Recommended Probe Case Torque |
5.1 N·m (45 in·lb) |
| Maximum Probe Case Torque |
7.3 N·m (65 in·lb) |
| Maximum Connector-to-Connector Torque |
0.565 N·m (0.42 ft·lbf) |
| Minimum Cable Bend Radius |
25.4 mm (1.0 in) |
| Tensile Strength |
222 N (50 lbf) probe case to probe lead; 222 N (50 lbf) probe lead to extension cable connectors |
| Probe Temperature Range |
-35°C to +177°C (-31°F to +351°F) |
| Weight |
0.323 kg |
Installation & Setup: Avoiding Common Failures
The 1/4-28 thread on the Bently Nevada 330172-05-63-05-02-05 must be installed with controlled torque. Use a recommended probe case torque of 5.1 N·m (45 in·lb) and never exceed 7.3 N·m (65 in·lb). Over-torquing is a common cause of case distortion and premature failure.
When drilling and tapping a mounting hole for a 1/4-28 probe, use a #3 or larger tap drill. The maximum length of thread engagement is 0.375 in; do not force deeper engagement.
Protect the 75 Ω triaxial cable from sharp bends. The minimum cable bend radius is 25.4 mm (1.0 in), and the connector-to-connector torque should never exceed 0.565 N·m (0.42 ft·lbf). Following these limits keeps the miniature coaxial ClickLoc connection secure without damaging the gold-plated contacts.
Applications & Integration
The Bently Nevada 330172-05-63-05-02-05 works with XL Proximitor Sensors and XL extension cables as part of a complete 3300 proximity transducer chain. The 60 Hz magnetic-field data and DC resistance table confirm this probe is matched for use with those components. For a 5 m system, the probe output in a 60 Hz magnetic field at a 50 mil gap is only 0.0014 mil pp/gauss, which helps maintain correct readings in electrically noisy environments.
Because the sensing element is a 5 mm probe, it can be used wherever the 3300 system requires a compact eddy-current sensor to monitor shaft dynamic motion or static position.
Reliability & Maintenance
The armored version of the Bently Nevada 330172-05-63-05-02-05 provides added mechanical protection for the probe lead, reducing the risk of abrasion and impact damage.
Keep the probe temperature within the -35°C to +177°C range. Exposing the probe below -34°C may cause premature failure of the pressure seal, so plan winter shutdowns and outdoor storage accordingly.
During routine maintenance, check that the cable bend radius stays above 25.4 mm, verify connector torque is below 0.565 N·m, and confirm the probe case has not been over-tightened beyond 7.3 N·m. Any sign of cable kinking or connector damage means the unit should be replaced before the next run.
Selection and Purchasing Advice
Before ordering, confirm that your system needs a 0.5 m total length, a 0.5 in unthreaded length, and a 6.3 in overall case length. The 330172-05-63-05-02-05 uses a miniature coaxial ClickLoc connector with a standard cable and has multiple agency approvals. Matching these options precisely avoids installation delays.
For a reliable spare or replacement, check the exact part marking on your current probe and compare it with the configuration options listed above. PLC Source PRO can supply this Bently Nevada 330172-05-63-05-02-05 probe and help confirm part-number details before shipment.