Product Introduction
The Bently Nevada 330173-00-04-20-02-05 is a field-proven 3300 series 5mm proximity probe with an M8 x 1 thread and no armor. This industrial automation module is manufactured in the USA and is designed for continuous measurement of shaft vibration and axial position in rotating machinery. The part number 330173-00-04-20-02-05 specifies a 0 mm unthreaded length, a 40 mm overall case length, a 2.0 meter cable, a miniature coaxial ClickLoc connector, and multiple agency approvals.
Technical Specifications
Unless otherwise noted, these specifications apply to a proximity transducer system operating between +18°C and +27°C, with a -24 Vdc power supply, a 10 kW load, an AISI 4140 steel target, and a probe gap of 1.27 mm.
| Parameter |
Value |
| Power Supply |
-17.5 Vdc to -26 Vdc, 12 mA maximum |
| Supply Sensitivity |
Less than 2 mV per V change |
| Output Resistance |
50 W |
| Probe DC Resistance (2.0 m) |
7.88 ± 0.50 Ω |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 303 or 304 stainless steel |
| Probe Cable |
75 Ω triaxial, FEP insulated |
| Tensile Strength |
222 N (50 lbf) case to lead; 222 N (50 lbf) lead to connector |
| 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) |
| Thread Engagement Limit |
M8 x 1, max 12 mm |
| Weight |
0.323 kg |
At 60 Hz magnetic field exposure up to 300 gauss, the probe output is 0.0004 mil pp/gauss at 10 mil gap, 0.0014 at 50 mil gap, and 0.0045 at 90 mil gap in a five meter system. The XL Proximitor sensor values for the same gaps are 0.0119, 0.0131, and 0.0133 mil pp/gauss, and the XL extension cable matches the probe values. The probe temperature range is -35°C to +177°C; keep it above -34°C to avoid pressure seal failure. For EPL Ga and Gc areas, temperature classifications range from T1 (-55°C to +232°C) to T5 (-55°C to +40°C). For EPL Dc, classifications range from T280°C to T90°C with ambient ranges as listed for the probe only.
Industry Applications
The Bently Nevada 330173-00-04-20-02-05 delivers reliable displacement data for steam turbines, centrifugal compressors, pumps, and large electric motors. In a compressor train, this 5mm probe can detect shaft orbit changes before they escalate into bearing damage. The M8 x 1 thread fits standard mounting bosses, and the 2.0 meter cable keeps the sensing element close to the measurement point without sacrificing signal integrity.
Installation & Setup Guidance
When mounting the 330173-00-04-20-02-05, clean the mounting bore and verify the counterbore depth, because the maximum thread engagement for M8 x 1 is 12 mm. Tighten the probe case to 5.1 N·m recommended, never exceeding 7.3 N·m. Connect the miniature coaxial ClickLoc connector with a maximum torque of 0.565 N·m. Respect the minimum cable bend radius of 25.4 mm and do not expose the probe below -34°C.
Troubleshooting & Common Issues
A frequent cause of premature probe failure is thermal stress: exposing the probe to temperatures below -34°C (-30°F) can damage the pressure seal. Vibration-induced cable fatigue appears when the installer ignores the 25.4 mm bend radius. Overtightening the case to values above 7.3 N·m warps the stainless steel case and changes the probe gap. Verify connector torque at 0.565 N·m during routine checks.
Selection Guide & Purchasing Advice
Before ordering the Bently Nevada 330173-00-04-20-02-05, confirm the total cable length, connector style, and approval option. PLC Source PRO supplies genuine spares ready for immediate deployment. Store the probe at ambient conditions and protect the FEP-insulated cable from sharp edges during transportation.