Bently Nevada 330101-40-60-05-02-CN 3300 XL 8 mm Probe, 3/8-24 UNF Thread

Overview

Industrial rotating machinery demands precise vibration monitoring to prevent unplanned downtime. The Bently Nevada 330101-40-60-05-02-CN is a 3300 XL 8 mm probe with 3/8-24 UNF thread, designed without armor for direct installation in bearing housings and machine casings. This probe delivers reliable displacement measurements over a linear range of 2 mm (80 mils), starting at approximately 0.25 mm (10 mils) from the target surface. The patented TipLoc molding method ensures a robust bond between the probe tip and body, while the CableLoc design provides 330 N (75 lbf) pull strength for secure cable attachment.

Technical Specifications Breakdown

Key parameters for the 330101-40-60-05-02-CN are listed below for quick reference:

Industry Applications

Its 8 mm diameter provides thicker encapsulation of the probe coil in molded PPS plastic, resulting in a more rugged probe that withstands physical abuse. The 0.5 meter (1.6 feet) total length with miniature coaxial ClickLoc connector simplifies installation in tight spaces. Operators in power generation, oil and gas, and petrochemical facilities rely on this sensor for accurate radial vibration and position measurements.

Installation & Setup Guidance

Mount the probe using the 3/8-24 UNF thread into a properly tapped hole. Ensure the target surface is clean and within the linear range (0.25 to 2.3 mm). The recommended gap setting for radial vibration is -9 Vdc, approximately 1.27 mm (50 mils). Use the ClickLoc connector to attach the extension cable securely. For field wiring, use 3 conductor shielded triad cable (0.2 to 1.5 mm² / 16 to 24 AWG) with a maximum length of 305 meters (1,000 feet) between the Proximitor sensor and monitor. Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature failure of the pressure seal.

Maintenance & Reliability

Inspect the probe and cable periodically for physical damage or wear. The FluidLoc cable option (available separately) prevents oil leakage through the cable interior. The probe is designed to seal differential pressure between the tip and case using a Viton O-ring. For applications requiring pressure seal testing, contact the custom design department. The probe withstands up to 56 days of 93% humidity with less than 3% change in Average Scale Factor (ASF) per IEC standard 68 2 3.

Compatibility & Integration

The 330101-40-60-05-02-CN is part of the 3300 XL family and works with 3300 XL extension cables and Proximitor sensors. The miniature coaxial ClickLoc connector ensures a reliable connection. The standard incremental scale factor of 7.87 V/mm (200 mV/mil) ±5% (for 5 or 1 meter systems) provides interchangeability with other 3300 XL probes. For extended temperature range systems, the deviation from best fit straight line (DSL) is less than ±0.038 mm (±1.5 mil) from 0°C to +45°C.

Selection Guide & Purchasing Advice

When selecting a replacement or spare probe, verify the thread size (3/8-24 UNF), unthreaded length (4.0 in), overall case length (6.0 in), and total cable length (0.5 meter). The CN agency approval option indicates country-specific approvals. Please verify current lifecycle status and availability with AutoDCSTech before ordering. AutoDCSTech stocks genuine Bently Nevada parts to ensure your machinery monitoring system operates reliably.