Product Overview
The Bently Nevada 330171-00-20-10-02-00 is a 3300 5mm probe built with a 1/4-28 UNF thread and no armor. This configuration includes a 0 in unthreaded length, a 2.0 in overall case length, and a 1.0 metre (3.3 feet) total length with a miniature coaxial ClickLoc connector. The probe uses a polyphenylene sulfide (PPS) tip and an AISI 304 stainless steel case, making it a dependable choice for proximity sensing in industrial automation environments. Every unit is made in the U.S.A.
Technical Specifications
| Parameter |
Value |
| Manufacturer / Part Number |
Bently Nevada 330171-00-20-10-02-00 |
| Product Type |
330171 3300 5mm Probe, 1/4-28 UNF thread, without armor |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 304 stainless steel (SST) |
| Probe Case Thread |
1/4-28; maximum thread engagement 0.375 in |
| Power Requirement |
-17.5 Vdc to -26 Vdc at 12 mA maximum consumption; operation above -23.5 Vdc can reduce linear range |
| Supply Sensitivity |
Less than 2 mV change in output voltage per volt change in input voltage |
| Probe DC Resistance (1.0 m) |
7.59 ± 0.50 Ω from center conductor to outer conductor |
| Probe Cable |
75 Ω triaxial, FEP insulated; this unit uses 1.0 m length |
| Tensile Strength |
222 N (50 lbf) probe case to lead; 222 N (50 lbf) probe lead to extension cable connectors |
| Connector Material |
Gold-plated brass or gold-plated beryllium copper |
| Probe Case Torque |
5.1 N·m recommended; 7.3 N·m maximum |
| Connector-to-Connector Torque |
0.565 N·m maximum |
| Minimum Cable Bend Radius |
25.4 mm (1.0 in) |
| Probe Temperature Range |
-35°C to +177°C (-31°F to +351°F); exposure below -34°C may cause pressure seal failure |
| Weight |
0.323 kg |
| Agency Approval Option |
00 = Not Required |
Failure-Mode Engineering: Why This Probe Holds Up
Proximity probes most often fail at mechanical or environmental stress points. The Bently Nevada 330171-00-20-10-02-00 addresses these risks with a PPS tip, an AISI 304 stainless steel case, and a 1/4-28 thread. The manufacturer specifies a maximum thread engagement of 0.375 in, so installers can avoid bottoming out the probe. Keep probe case torque at 5.1 N·m recommended and never exceed 7.3 N·m. For the cable connector, the maximum connector-to-connector torque is 0.565 N·m.
Thermal stress is another common failure cause. This Bently Nevada 330171-00-20-10-02-00 probe operates from -35°C to +177°C; exposing it below -34°C can damage the pressure seal. Maintaining the minimum 25.4 mm cable bend radius also prevents internal conductor damage.
Industry Applications
The 330171-00-20-10-02-00 suits noncontact position and gap measurement in industrial machinery packages. With an AISI 4140 steel target and a probe gapped at 1.27 mm (50 mils), the system provides stable performance in the +18°C to +27°C temperature band defined by the manufacturer.
Facilities that need a compact 1.0 m cable run can use this probe in proximity transducer systems connected through the miniature coaxial ClickLoc connector. The PPS tip and stainless steel case allow installation where elevated temperature or mechanical wear would damage less robust sensors.
Installation and Setup Guidance
Drill and tap the mounting hole for the 1/4-28 UNF thread using a #3 or larger tap drill. Keep thread engagement at or below 0.375 in to prevent the probe from contacting the target. Apply 5.1 N·m of probe case torque as a target and do not exceed 7.3 N·m.
Route the FEP-insulated triaxial cable with a bend radius of at least 25.4 mm. Verify the connector is seated correctly; the ClickLoc design is intended for a standard cable. When tightening the connector-to-connector joint, stay within the 0.565 N·m maximum torque.
Maintenance and Reliability
Inspect the probe cable and connector regularly for abrasion, sharp bends, or loose connections. The Bently Nevada 330171-00-20-10-02-00 has a 222 N tensile strength rating at the probe case-to-lead joint, so routine handling should not overstress the cable if the route is protected.
Monitor ambient temperature. Repeated operation at the upper boundary of the -35°C to +177°C range can accelerate seal aging; staying above -34°C is also critical to avoid pressure seal failure. Keep the probe gap stable and verify the mounting thread has not loosened during service.
Selection Guide and Purchasing Advice
Before ordering, confirm that the 330171-00-20-10-02-00 matches your system needs. The part number identifies the 3300 5mm probe with 1/4-28 UNF thread, no armor, 0 in unthreaded length, 2.0 in overall case length, 1.0 m cable, ClickLoc connector, and no agency approval requirement.
Check the required cable length and mounting geometry, and confirm the target material is compatible with the specified AISI 4140 steel test target. For a ready-to-ship Bently Nevada 330171-00-20-10-02-00, order through PLC Source PRO.