Technical Specifications Breakdown
Key parameters for the 330101-20-39-10-02-05 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Product Type | 3300 XL 8 mm Probe, 3/8-24 UNF thread, without armor |
| Unthreaded Length | 2.0 in (Option 20) |
| Overall Case Length | 3.9 in (Option 39) |
| Total Length | 1.0 meter (3.3 feet) (Option 10) |
| Connector Type | Miniature coaxial ClickLoc connector, standard cable (Option 02) |
| Agency Approvals | CSA, ATEX, IECEx (Option 05) |
| Linear Range | 2 mm (80 mils), from 0.25 to 2.3 mm (10 to 90 mils) |
| Incremental Scale Factor (ISF) | 7.87 V/mm (200 mV/mil) ± 5% (1 m system) |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Probe Case Material | AISI 303 or 304 stainless steel (SST) |
| Probe Temperature Range (Standard) | -52°C to +177°C (-62°F to +350°F) |
Industry Applications and Cost Impact
Turbomachinery Protection
In steam turbines and compressors, the 3300 XL 8 mm Probe provides accurate shaft vibration measurements. Early detection of bearing wear or imbalance reduces repair costs by up to 30% compared to reactive maintenance.
Pump and Motor Monitoring
For critical pumps in oil and gas or water treatment, the probe’s 2 mm linear range captures subtle vibration changes. This allows condition-based maintenance, avoiding unnecessary replacements and extending component life.
Generator and Gearbox Surveillance
Generators and gearboxes benefit from the probe’s robust PPS tip and stainless steel case, which withstand harsh conditions. Reliable data prevents unplanned outages, saving significant revenue loss per hour of downtime.

Installation and Setup Guidance
Mount the probe using the 3/8-24 UNF thread with a recommended torque of 11.2 N•m (100 in•lbf) for standard forward mounted probes. For the first three threads, use 7.5 N•m (66 in•lbf). Ensure the recommended gap setting for radial vibration is -9 Vdc (approximately 1.27 mm or 50 mils). Use field wiring of 0.2 to 1.5 mm² (16 to 24 AWG) with a 3-conductor shielded triad cable. Maximum field wiring length is 305 meters (1,000 feet) to maintain signal integrity.
Maintenance and Reliability
Inspect the probe and cable periodically for physical damage. The patented TipLoc and CableLoc designs provide 330 N (75 lbf) pull strength, reducing failure risk. Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent pressure seal failure. The probe’s Viton® O-ring seals differential pressure; contact the custom design department if pressure testing is required.
Cost-Effective Vibration Monitoring with the Bently Nevada 330101-20-39-10-02-05
Unplanned downtime in rotating machinery can cost thousands per hour. The Bently Nevada 330101-20-39-10-02-05 3300 XL 8 mm Probe delivers reliable vibration data to prevent catastrophic failures, reducing maintenance costs and extending equipment life. This probe is engineered for demanding industrial environments where accuracy and durability directly impact operational ROI.

Compatibility and Integration
This probe is part of the 3300 XL system, compatible with 3300 XL Proximitor sensors and extension cables. The standard 1-meter system offers an Incremental Scale Factor of 7.87 V/mm ± 5% over the linear range. For extended temperature range systems, ISF is ± 6.5%. Use the miniature coaxial ClickLoc connector for secure, quick connections.
Selection Guide and Purchasing Advice
When selecting a probe, consider total length, thread type, and agency approvals. For custom lengths or armored options, contact AutoDCSTech. We stock genuine Bently Nevada parts to ensure reliable delivery and support.
Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 330101-20-39-10-02-05 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
