Bently Nevada 330101-43-57-05-02-00 3300 XL 8 mm Proximity Probe

Description

The 330101-43-57-05-02-00 is an unarmored, threaded proximity probe belonging to the renowned 3300 XL 8 mm Proximity Transducer System family. This specific configuration is engineered with a 3/8-24 UNF thread, a 4.3-inch unthreaded case length, a 5.7-inch overall case length, a 0.5-meter (1.6 feet) total probe length, and a standard miniature coaxial ClickLoc connector. Unlike sister configurations that feature shorter case lengths or protective stainless steel armor, this deep-reach probe is specifically designed to safely access target shafts positioned deep within machine casings or bearing housings. Operating without the added cost of hazardous area approvals (agency approval option 00), this general-purpose variant is ideal for clean, non-hazardous industrial zones requiring high-reliability vibration tracking.

Operating on the eddy-current principle, this proximity probe functions as a non-contact sensor that measures dynamic shaft vibration and static rotor position. The probe tip consists of high-performance polyphenylene sulfide (PPS) overmolded onto the stainless steel probe body, creating an exceptionally reliable seal against high differential pressures and preventing oil or gas bypass. When combined with a compatible 3300 XL Proximitor sensor and extension cable, this hardware provides continuous, high-accuracy machinery protection data to prevent catastrophic failures of critical rotating assets.

Features

• Standard 8 mm tip diameter optimized for non-contact eddy-current displacement measurement.
• Extended unthreaded case length of 4.3 inches (A: 43) combined with an overall case length of 5.7 inches (B: 57) for deep bearing housing access.
• 0.5-meter (1.6 feet) total probe length (C: 05) designed for localized mounting and connection to extension cabling.
• Miniature coaxial ClickLoc connector (D: 02) provides low-attenuation transmission without an integrated connector protector.
• General-purpose design (E: 00) for cost-effective implementation in areas not requiring hazardous location certifications.
• Robust, overmolded polyphenylene sulfide (PPS) tip construction with a high-durability stainless steel case.
• Inherent resistance to moisture, lubricating oils, and chemical degradation in harsh machinery environments.

Applications

• Steam and gas turbine shaft vibration and axial displacement monitoring.
• Centrifugal compressor and expander rotor position and vibration tracking.
• High-speed industrial pump and gearbox thrust bearing measurements.
• Deep-well casing and thick-walled bearing housing probe installations.
• Balance-of-plant rotating machinery protection in non-hazardous industrial areas.

Ordering Information

Technical Specifications

Installation Guidelines

• Verify the case thread matches the mounting hole (3/8-24 UNF-2A) and that the unthreaded length of 4.3 inches allows for proper physical positioning inside the machine housing.
• Mount with the recommended target gap setting (typically 1.27 mm or 50 mils) corresponding to the system-specific calibration curve.
• Ensure that thread engagement does not exceed the industry standard maximum limit of 0.563 inches to prevent probe binding or physical casing damage.
• Ensure all coaxial cables are routed through grounded protective metal conduit to isolate against mechanical wear and electromagnetic noise.
• Keep the miniature coaxial ClickLoc connector free of dust, lubricants, and moisture. Do not bend the cable beyond the manufacturer-specified minimum bend radius.