Advanced Machinery Protection with Bently Nevada

Product Overview & Key Features

• Brand & Model: Bently Nevada 330172-20-55-05-02-CN
• Product Type: 3300 5mm Proximity Probe with armored cable and extended length.
• Core Function: Provides accurate measurement of shaft vibration and positional changes for machinery protection systems.
• Extended Design: Features 2.0-inch unthreaded length and 5.5-inch overall case for versatile mounting.
• Connection System: Equipped with secure Miniature Coaxial ClickLoc connector for reliable signal transmission.

Complete Suffix Code Breakdown

• 330172: Base Model (5mm Probe, 1/4-28 UNF Thread)
• 20: Unthreaded Length = 2.0 inches
• 55: Overall Case Length = 5.5 inches
• 05: Total Cable Length = 0.5 meter (1.6 feet)
• 02: Connector = Miniature Coaxial ClickLoc
• CN: Agency Approval = Country Specific

Detailed Technical Specifications

• Electrical Power: Requires -17.5 to -26 VDC supply with maximum 12 mA current consumption.
• Output Impedance: 50 Ohms for stable signal output and system compatibility.
• Probe DC Resistance: 7.45 ± 0.5 Ohms (measured from center conductor to outer conductor).
• Temperature Range: Operates from -35°C to +177°C (-31°F to +351°F).
• Cable Type: 75 Ohm triaxial cable with FEP (fluoroethylene propylene) insulation.
• Mechanical Strength: 222 N (50 lbf) tensile strength for both probe case and cable connections.
• Installation Torque: 5.1 N·m (45 in-lb) recommended, with 7.3 N·m (65 in-lb) maximum.
• Cable Bend Radius: Minimum 25.4 mm (1.0 inch) radius for cable protection.

Mounting & Installation Guide

• Prepare mounting hole using #3 or larger tap drill for 1/4-28 UNF thread.
• The probe features extended 2.0-inch unthreaded section for specific mounting requirements.
• Critical Installation Note: Maximum thread engagement must not exceed 0.375 inches.
• Always apply recommended torque values during installation to prevent damage.
• For calibrated performance, gap probe at 1.27 mm (50 mils) from AISI 4140 steel target.

Frequently Asked Questions (FAQ)

• Q: What is the advantage of the 2.0-inch unthreaded length?
  A: This allows installation through thicker mounting brackets or insulation without thread engagement issues.
• Q: Does this model require specific country certifications?
  A: Yes, the 'CN' suffix indicates it meets country-specific agency approval requirements.
• Q: What is the total extended length of this probe?
  A: With 2.0" unthreaded and 5.5" case length, it's designed for applications requiring extended reach.
• Q: Can the Bently Nevada 330172-20-55-05-02-CN be used in high-temperature environments?
  A: Yes, it operates continuously up to +177°C (351°F), making it suitable for many high-temperature applications.

© 2026 Ubest Automation Limited. https://www.ubestplc.com/ All rights reserved.
Contact: sales@ubestplc.com Phone: +86 180 3000 5825