Description

The Bently Nevada 330101-00-77-15-02-00 is an 8 mm proximity probe engineered as a fundamental sensor component for the 3300 XL transducer chain. Unlike standard, shorter variants, this specific configuration features a fully threaded 3/8-24 UNF-2A body with a 0.0-inch (0 mm) unthreaded length and an extended 7.7-inch (196 mm) case length, providing crucial extra reach in deep-seated machine casing and bearing housing applications. It is fitted with a 1.5-meter (4.9-foot) standard coaxial cable that terminates in a miniature ClickLoc connector. Lacking local agency certification requirements, this option offers an economical, highly reliable vibration and position monitoring solution for standard, non-hazardous industrial installations.

Features

• Standard 8 mm tip diameter optimized for non-contact eddy-current shaft displacement and vibration measurements.
• Fully threaded case (0.0 inches unthreaded length) allows maximum depth adjustment flexibility during physical installation.
• Extended 7.7-inch overall case length allows reach into deep recesses inside industrial housings.
• Rugged polyphenylene sulfide (PPS) tip construction and stainless steel probe body resist degradation from oil and typical machine fluids.
• Premium miniature coaxial ClickLoc connector provides a reliable, low-impedance electrical connection to the extension cable.
• Standard unarmored cable design allows easy routing in tight, protected conduit runs.

Applications

• Non-contact shaft vibration monitoring in steam and gas turbine assemblies.
• Axial thrust and radial displacement diagnostics in heavy industrial compressors.
• Rotor position measurement in critical power generation pumps and fans.
• Continuous monitoring and protection of high-speed rotating machinery.

Ordering Information

Technical Specifications

Installation Guidelines

• Position the probe with the correct mechanical gap corresponding to the target calibration system (typically 1.27 mm or 50 mils).
• Ensure that probe thread engagement length does not exceed 0.563 inches to avoid mechanical binding during installation.
• Route cables through appropriate shielded conduit or cable trays to prevent electrical noise interference and physical damage.
• Mating connectors should be hand-tightened (finger tight); avoid applying excessive force with pliers on the gold-plated miniature ClickLoc surfaces.
• If the connection is exposed to persistent turbine oil mist, utilize silicone tape over the connector joint as a preventive seal.