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Product Overview

The Bently Nevada 26179-01-04-10-02 is a heavy-duty 3300 XL 11mm Proximity Probe designed for non-contact measurement of shaft vibration and axial displacement. Utilizing advanced eddy current technology, this probe detects minute changes in the gap between the 11mm tip and the target shaft. This specific model features a larger tip diameter compared to standard 8mm probes, making it ideal for larger machinery where a wider linear range or greater standoff distance is required. It integrates flawlessly with 3300 XL Proximitor® Sensors to provide the 3500 Series monitoring system with high-fidelity mechanical health data.

Part Number Breakdown: 26179-AA-BB-CC-DD

Bently Nevada identifies the specific physical attributes of the 11mm probe through this suffix logic:

  • 26179-01 (Unthreaded Length): 10 mm (0.4 in).

  • -04 (Overall Case Length/Thread): Indicates an M14 x 1.5 metric thread type.

  • -10 (Total Cable Length): Specifies a 1.0 meter (approx. 3.3 feet) cable.

  • -02 (Cable Sleeve): Includes a 0.2 meter protective sleeve for the connector end.

Technical Specifications

The 26179-01-04-10-02 provides superior linearity for larger displacement ranges.

Feature Specification
Probe Tip Diameter 11 mm
Thread Size M14 x 1.5
Linear Range Up to 4.0 mm (160 mils) depending on Proximitor
Cable Length 1.0 Meter
Housing Material High-grade Stainless Steel
Frequency Response 0 Hz to 10 kHz
Operating Temperature –35 °C to +180 °C (–31 °F to +356 °F)
Pressure Rating Seated tip holds up to 3.5 bar (50 psi)

Engineering Advantages

  • Enhanced Linear Range: The 11mm tip diameter provides a significantly larger linear measurement range than 5mm or 8mm probes. This allows engineers to monitor large-scale hydro turbines or steam turbines that exhibit higher axial float or vibration amplitudes.

  • Superior Thermal Stability: The probe utilizes specialized Polyphenylene Sulfide (PPS) tip material and Tefzel® cable insulation. This construction prevents signal drift in extreme environments, ensuring the 26179-01-04-10-02 maintains accuracy at temperatures up to +180 °C.

  • M14 Metric Integration: The M14 x 1.5 threading provides a robust mounting interface for heavy industrial casings. The larger thread diameter resists vibration-induced loosening, maintaining the calibrated gap setting throughout long-term operation.

  • Interchangeability: As part of the 3300 XL system, this probe supports total interchangeability. You can replace the probe without recalibrating the entire loop, provided you use the matching 3300 XL 11mm Proximitor and extension cables.

FAQs

Q: Is the 26179-01-04-10-02 supplied as 100% Brand New?

A: Yes. We supply only 100% Brand New and Original Bently Nevada hardware in original factory packing. Each unit includes a 12-month factory warranty to ensure industrial-grade reliability.

Q: Can I use an 11mm probe with an 8mm Proximitor sensor?

A: No. The Proximitor must match the probe diameter. You must use a 3300 XL 11mm Proximitor Sensor with this probe. Using an 8mm Proximitor will result in significant measurement errors and an incorrect scale factor (mV/mil).

Q: Why choose the 11mm probe over the 8mm version?

A: Choose the 11mm probe (26179 series) when your application requires a larger measurement range (up to 160 mils) or when the target shaft material requires a larger sensor footprint to achieve a stable magnetic field.

Q: What is the purpose of the 0.2m cable sleeve (Option -02)?

A: The sleeve provides mechanical reinforcement and environmental protection for the coaxial cable near the connector. This prevents oil ingress and reduces the risk of cable kinking in tight junction boxes or near rotating machinery ports.

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