330171-00-20-90-02-05 | Bently Nevada 5mm Probe

Product Overview

When machinery reliability is non-negotiable, the Bently Nevada 330171-00-20-90-02-05 delivers precise vibration and position monitoring. This 3300 5mm probe is engineered for permanent installation in critical rotating equipment, providing the data needed to detect early faults before they escalate into costly downtime.

As part of the trusted Bently Nevada 3300 series, this probe is built to withstand demanding industrial environments. The 330171-00-20-90-02-05 features a 1/4-28 UNF thread and a 9.0-meter cable, making it suitable for a wide range of mounting configurations. Its robust construction and proven design help reduce maintenance costs and extend machinery life.

Technical Specifications

Every specification of the 330171-00-20-90-02-05 is designed for accuracy and durability. Key parameters include:

Probe Type: 3300 5mm proximity probe, 1/4-28 UNF thread, without armor

Total Length: 9.0 meters (29.5 feet)

Connector: Miniature coaxial ClickLoc connector, standard cable

Agency Approvals: Multiple Approvals

Probe Tip Material: Polyphenylene sulfide (PPS)

Probe Case Material: AISI 304 stainless steel (SST)

Weight: 0.323 kg

Probe Case Thread: 1/4-28, maximum thread engagement 0.375 inches

Power Supply: Requires -17.5 Vdc to -26 Vdc at 12 mA maximum consumption

Output Resistance: 50 Ω

Probe DC Resistance: 9.87 ± 0.90 Ω (for 9.0 m probe)

Probe Temperature Range: -35°C to +177°C (-31°F to +351°F)

Probe Cable: 75 Ω triaxial, FEP insulated, available in 0.5, 1, 2, 5, or 9 meters

Tensile Strength: 222 N (50 lbf) probe case to lead, and lead to connector

Probe Case Torque: 5.1 N·m recommended, 7.3 N·m maximum

Connector-to-Connector Torque: 0.565 N·m (0.42 ft·lbf) maximum

Minimum Cable Bend Radius: 25.4 mm (1.0 in)

These specifications ensure reliable performance in a variety of industrial settings, directly contributing to lower lifecycle costs by reducing false readings and unscheduled maintenance.

Industry Applications

The 330171-00-20-90-02-05 is ideal for monitoring shaft vibration and axial position in:

Turbomachinery: Steam turbines, gas turbines, and compressors where early fault detection prevents catastrophic failures.

Pumps and Motors: Critical pumps and large electric motors benefit from continuous vibration monitoring to optimize maintenance schedules.

Generators: Monitoring rotor vibration helps avoid costly generator outages.

By integrating this probe into your condition monitoring system, you gain actionable insights that reduce unplanned downtime and extend equipment life—directly improving your bottom line.

Installation & Setup

Proper installation is essential for accurate readings and long service life. Follow these guidelines:

Mounting Hole: When drilling and tapping for a 1/4-28 probe, use a #3 or larger tap drill.

Thread Engagement: Do not exceed the maximum thread engagement of 0.375 inches to avoid damaging the probe.

Torque: Apply 5.1 N·m (45 in·lb) recommended torque when tightening the probe case. Never exceed 7.3 N·m (65 in·lb).

Cable Routing: Maintain a minimum bend radius of 25.4 mm (1.0 in) to prevent cable damage.

Connector Torque: Tighten connector-to-connector connections to a maximum of 0.565 N·m (0.42 ft·lbf).

Following these steps ensures reliable signal transmission and minimizes the risk of mechanical failure, saving you time and replacement costs.

Maintenance & Reliability

Regular inspection of the probe and cable is recommended to maintain peak performance. Check for:

Cable Wear: Inspect for cuts, abrasions, or kinks that could affect signal quality.

Connector Integrity: Ensure connectors are clean and securely tightened.

Probe Tip Condition: Examine the PPS tip for damage or contamination.

Environmental Exposure: Avoid temperatures below -34°C (-30°F) to prevent premature failure of the pressure seal.

By incorporating these simple checks into your routine, you can extend the probe's service life and avoid unexpected failures, reducing total cost of ownership.

Selection & Purchasing Advice

Before ordering, verify that the 330171-00-20-90-02-05 matches your system requirements. Confirm the total length (9.0 m), connector type (ClickLoc), and agency approvals meet your site specifications. Also ensure compatibility with your existing Bently Nevada monitor or proximity system.

BluePLC Industrial is your reliable source for genuine Bently Nevada parts. We offer competitive pricing and fast worldwide shipping. Contact our team to confirm availability and lead times for the 330171-00-20-90-02-05.

For complete technical specifications or to discuss your application, please contact BluePLC Industrial.