Product Overview
When a machine protection system goes down, every hour of downtime costs money. The Bently Nevada 146055-50-02-00 is a 3300 ceramic capped reverse mount probe built to keep your vibration monitoring running reliably. This probe uses a 3/8-24 UNF thread and comes with a 5.0 meter (16.4 feet) integral cable. The ceramic cap protects the probe tip in harsh oil and gas environments, making it a practical choice for maintenance engineers who need dependable measurement and easy service.

Key Specifications
| Specification | Value |
|---|---|
| Model | 3300 Ceramic Capped Reverse Mount Probe |
| Part Number | 146055-50-02-00 |
| Probe Case Thread | 3/8-24 UNF |
| Total Length | 5.0 meters (16.4 feet) |
| Connector Type | Miniature ClickLoc coaxial, standard cable |
| Agency Approval | Not required |
| Probe Tip Material | Alumina ceramic (Al2O3) |
| Probe Case Material | AISI 304 stainless steel |
| Cable Type | 75 Ω coaxial, FEP insulated |
| Operating Temperature | -51°C to +177°C (-60°F to +351°F) |
| Pressure Rating | 34 Bar (500 psi) nitrogen |
| Nominal DC Resistance | 8.73 ± 0.70 ohms |
| Linear Range | 1.52 mm (60 mils) |
| Incremental Scale Factor | 7.87 V/mm (200 mV/mil) ±6.5% |
These specs matter because they define how the probe performs in real applications. The ceramic tip resists wear and chemical exposure, while the stainless steel case handles tough industrial conditions. The 5-meter cable length is designed for use with the 5 m Proximitor Sensor only, so you get a matched system.
Applications and Reliability
This probe fits well in oil and gas machinery protection systems. You can use it on compressors, turbines, and pumps where continuous vibration monitoring is critical. The reverse mount design allows installation in tight spaces, and the ceramic cap extends service life in abrasive environments. Maintenance engineers appreciate the 3/8-24 UNF thread because it is common and easy to install. The wide temperature range means it works in both hot and cold climates. For reliability, the probe is sealed to 34 Bar (500 psi) nitrogen, so it handles high-pressure areas. Regular inspection of the probe tip and cable is recommended to catch wear early. Because the 146055-50-02-00 is ready-to-ship from Oil AutoTech, you can get spares when you need them without long lead times.

Installation and Compatibility
The probe uses a miniature ClickLoc coaxial connector and standard cable. It is designed for use with Bently Nevada 3300 series Proximitor Sensors. When integrating into a monitoring system, make sure the cable length matches the Proximitor Sensor (5 m probe with 5 m sensor). The reverse mount configuration means the probe threads into the machine casing from the back, which simplifies installation in crowded areas. Always follow the manufacturer’s torque and mounting guidelines. If you need help selecting the right probe for your application, Oil AutoTech offers hands-on technical selection help.
Ordering and Support
To order the 146055-50-02-00, contact Oil AutoTech today for pricing and availability. We provide fast dispatch, worldwide, so you get your spares quickly. Please verify current lifecycle status and availability with Oil AutoTech before ordering.
