Product Overview
The Bently Nevada 330173-00-08-05-02-05 is a 3300 5mm proximity probe with an M8 x 1 thread and without armor. It senses shaft vibration and radial position using proximity transducer principles. The unthreaded length option is 0 mm, the overall case length is 80 mm, and the total length is 0.5 m (1.6 ft). This unit is made in the U.S.A. and uses a miniature coaxial ClickLoc connector with standard cable.
Failure Mode Analysis: Built for Reliability
Proximity probes often fail because of connector strain, overtightening, or extreme temperatures. The Bently Nevada 330173-00-08-05-02-05 resists these failure modes through defined mechanical limits. The probe has 222 N (50 lbf) tensile strength from probe case to lead and from probe lead to extension cable connectors. Probe case torque should be 5.1 N·m (45 in·lb) recommended, with a 7.3 N·m (65 in·lb) maximum. Connector-to-connector torque is 0.565 N·m (0.42 ft·lbf) maximum, so installers can avoid thread and connector damage.
Technical Specifications
| Parameter |
Value |
| Product Type |
3300 5mm Probe, M8 x 1 thread, without armor |
| Unthreaded Length |
0 mm |
| Overall Case Length |
80 mm |
| Total Length |
0.5 m (1.6 ft) |
| Connector |
Miniature coaxial ClickLoc connector, standard cable |
| Agency Approval |
Multiple Approvals |
| Weight |
0.323 kg |
| Power Supply |
-17.5 Vdc to -26 Vdc at 12 mA maximum consumption |
| Output Resistance |
50 W as listed |
| Probe DC Resistance |
7.45 ± 0.50 Ω for 0.5 m probe length |
| Probe Tip Material |
Polyphenylene sulfide (PPS) |
| Probe Case Material |
AISI 303 or 304 stainless steel (SST) |
| Probe Cable |
75 Ω triaxial, FEP insulated; available in 0.5, 1, 2, 5, or 9 m lengths |
| Probe Temperature Range |
-35°C to +177°C (-31°F to +351°F) |
| Thread Engagement |
Maximum 12 mm for M8 x 1 case thread |
Real-World Applications
The Bently Nevada 330173-00-08-05-02-05 suits critical rotating equipment. It provides direct displacement readings on turbines, compressors, and large pumps. At a 10 mil gap under a 60 Hz magnetic field up to 300 Gauss, the probe output effect is only 0.0004 mil pp/gauss, which helps reject electrical interference. The overall case length of 80 mm defines the mounting depth, and the 0.5 m cable length works for short, close-coupled installations.
Installation & Setup Guidance
- Confirm the M8 x 1 thread engages no more than 12 mm. Deeper engagement can stress the probe case.
- Apply 5.1 N·m (45 in·lb) recommended torque for the probe case; do not exceed 7.3 N·m (65 in·lb).
- Keep cable bends above the 25.4 mm (1.0 in) minimum radius to prevent internal conductor damage.
- Tighten connector-to-connector joints to a maximum of 0.565 N·m (0.42 ft·lbf).
- Reference the specification gap of 1.27 mm (50 mils) when setting the initial probe position.
Maintenance & Reliability
Operate the Bently Nevada 330173-00-08-05-02-05 within its temperature range of -35°C to +177°C. Do not expose the probe below -34°C (-30°F), because this can cause premature failure of the pressure seal. Periodically inspect the 75 Ω triaxial FEP-insulated cable for cuts or crushed areas, and verify connector torque remains within the maximum limit. These checks reduce common probe failures and extend service life.
Selection Guide & Purchasing Advice
Before purchasing, verify the exact model Bently Nevada 330173-00-08-05-02-05 and match each option code to your application. The 00 unthreaded length, 08 overall case length, 05 total length of 0.5 m, 02 ClickLoc connector, and 05 Multiple Approvals together define this configuration. PLC Source PRO offers this 330173-00-08-05-02-05 as a ready-to-ship automation spare for vibration monitoring and condition monitoring systems.