Description
The Bently Nevada 330106-05-30-10-02-CN is a high-precision 8mm proximity probe, part of the 3300 XL series. This specific configuration features a standard 3/8-24 UNF thread and is engineered to measure static (gap) and dynamic (vibration) distances between the probe tip and a conductive target.
In industrial environments, these probes are the front-line sensors for critical machinery, typically installed in bearing housings to monitor shaft vibration and position. We supply these units to global maintenance teams who cannot afford the lead times of traditional supply chains when a sensor fails during a turnaround or unplanned outage.
Inventory and Commercial Terms
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Item Condition: New Original (Factory Sealed)
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Availability: In stock; ready for immediate global dispatch
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Warranty Coverage: 12-month warranty from delivery date
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Pricing Notice: The listed price is a reference for procurement budgeting. Final costs are subject to current stock levels and international logistics fees. Inquire for a formal commercial quote.
Part Number Configuration Breakdown
The 330106 series defines the physical dimensions and mounting of the probe. Precision in the dash-number selection is critical for physical fitment.
| Code | Option | Technical Definition |
| 330106 | Model | 3300 XL 8mm Reverse Mount Probe (3/8-24 UNF) |
| -05 | Unthreaded Length | 0.5 inches |
| -30 | Case Length | 3.0 inches |
| -10 | Total Length | 1.0 meter (3.3 feet) |
| -02 | Connector | Miniature coaxial ClickLoc connector, with connector protector |
| -CN | Regional | NEPSI/CCC certification for the China market |
Technical Specifications
Parameter Value
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Manufacturer Bently Nevada (Baker Hughes)
Probe Tip Diameter 8.0 mm (0.31 in)
Thread Size 3/8-24 UNF
System Compatibility 3300 XL 8mm Proximitor Sensor
Linear Range 2.0 mm (80 mils)
Scale Factor 7.87 V/mm (200 mV/mil) when used with XL Proximitor
Operating Temperature -51 °C to +177 °C (-60 °F to +351 °F)
Probe Tip Material Polyphenylene sulfide (PPS)
Max Pressure Fluid seal up to 7 bar (100 psi)
Operational Insights & Field Application
How does this probe configuration handle the extreme temperatures of a turbine deck? In field deployments, we have found the 330106-05-30-10-02-CN to be exceptionally stable, provided the installation accounts for thermal expansion of the machine casing.
The “Reverse Mount” design is actually clever for applications where the probe must be installed from the inside of a bearing housing or through a specialized bracket where external access is restricted.
Well, technically this is a 1.0-meter probe, but you cannot connect it directly to a 3500 monitor. It must be used with a 4.0-meter or 8.0-meter extension cable to reach the required 5.0-meter or 9.0-meter system length tuned for the Proximitor oscillator.
In my experience, the most common cause of “Probe OK” faults isn’t the tip—it’s the pigtail. If you don’t use the supplied connector protector (the -02 option), oil and moisture will eventually wick into the coaxial junction, causing signal attenuation. Honestly, if you are seeing “spiky” vibration data on your DCS, check the ClickLoc connector for oil contamination before replacing the entire probe.
Global Trade, Shipping, and Logistics Optimization
Shipping high-sensitivity Bently Nevada probes internationally requires strict attention to detail to ensure they arrive in calibration and clear customs quickly.
Customs & Regional Compliance
The -CN suffix is critical for projects in China, indicating NEPSI/CCC compliance for hazardous areas. We classify this hardware under HS Code 9031.80.80. For shipments to the APAC region, we provide a full digital and physical document set—including the Commercial Invoice, Packing List, and Certificate of Origin (COO)—to prevent the cargo from being held for “valuation or technical inspection.”
Logistics and Transit
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Protection: Every probe is coiled to its minimum safe bend radius and sealed in an ESD-shielded bag. We over-box with rigid internal supports to prevent the probe tip from being crushed during transit.
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Air Freight: We exclusively utilize DHL Express and FedEx International Priority. Given that these are small, high-precision instruments, air freight is the only way to minimize the exposure to vibration and moisture found in sea transit.
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Incoterms: We standardly operate on FCA (Free Carrier) or CIP (Carriage and Insurance Paid to).
Trade Finance
To facilitate international procurement, we accept Telegraphic Transfer (T/T). For critical plant outages, we can provide “Priority Release” upon verification of the bank SWIFT copy, ensuring the probe leaves our warehouse on the next available flight.
Frequently Asked Questions
Can I use this 3/8-24 UNF probe in a metric M10 hole?
No. Never force a thread. While they are close in size, the pitch is different, and you will gall the threads of the bearing housing. If you have a metric machine, you need the 330105 (M10x1) series instead.
What is the “Unthreaded Length” used for?
The 0.5-inch unthreaded length (-05) allows the probe to pass through a mounting bracket or housing without the threads engaging until the probe is closer to its final position. This reduces the risk of cross-threading during a blind install.
Is the -CN version compatible with standard 3300 XL Proximitors?
Yes. The -CN designation refers to regional regulatory certifications and labeling. Electrically, it is identical to the standard 330106 probes and will interface perfectly with any 3300 XL 8mm Proximitor.
