Bently Nevada 330130-040-00-05 Extension Cable – for 3300 XL Proximity Transducer Systems

The Bently Nevada 330130-040-00-05 is an extension cable designed for the 3300 XL proximity probe system, used to carry the eddy-current probe signal from the machine to the Proximitor sensor. It’s the kind of small part that, in many cases, decides whether your vibration measurements are rock-solid or a headache. Typical applications include radial/axial shaft vibration, thrust position, and speed/phase pickup on turbines, compressors, pumps, and large electric motors.

• Purpose-built for 3300 XL 5 mm/8 mm systems – Mates between the probe and the Proximitor sensor to maintain calibrated system performance.

• Factory-terminated, matched impedance – Stable signal integrity over the specified length; helps preserve scale factor and linearity.

• Rugged connectors – Typically uses Bently Nevada’s locking coax connectors to resist vibration loosening and mis-mating in tight panels.

• Length code “040” – Commonly denotes a 40‑ft nominal length, helping you meet standard system lengths when combined with the probe lead.

• Industrial-grade jacket – Built for oil & gas and power environments; resists common lubricants and most shop chemicals.

• Drop-in replacement – Keeps legacy 3300 XL installations serviceable without re-engineering conduit runs.

You’ll see 330130 cables anywhere proximity probes are standard practice: refineries, petrochemical crackers, combined-cycle plants, pulp & paper, and large water utilities. They’re commonly run from bearing housings on critical machines back to a cabinet with Proximitor sensors and the vibration/condition monitoring rack or PLC.

• API 670-style measurements on turbines, compressors, and expanders

• Shaft vibration, thrust position, and phase reference pickups

• Retrofitting older 3300/3300 XL routes while keeping calibrated system lengths

• Reliability – From my experience, the locking connectors hold up well on machines with high vibration, reducing nuisance intermittent faults.

• Compatibility – Works seamlessly with 3300 XL probes and Proximitor sensors, which means no recalibration headaches when lengths are selected correctly.

• Cost control – Replacing only the cable often restores bias voltage and linearity without touching the probe or Proximitor, saving both time and budget.

• Serviceability – Clear length coding simplifies spares management; maintenance teams can swap cables fast during outages.

“We lost the gap voltage on a turbine bearing and a quick swap of the 330130 cable brought it back within spec,” a maintenance lead told us. It seems to be a common win during tight turnarounds.

• Routing – Keep the cable in metallic conduit or tray where practical; separate from high-voltage conductors to minimize electromagnetic noise.

• Bend radius – Maintain a gentle bend radius; tight bends can affect insulation and long-term reliability.

• System length check – Ensure the total system length (probe lead + extension cable) matches the intended 3300 XL calibration length. This is typically the difference between spot-on readings and drift.

• Connections – Fully seat and lock the connectors; lightly hand-tighten until the locking mechanism clicks or stops. Avoid tool over-torque.

• Routine care – Inspect the jacket for cuts or crushing each outage; verify bias voltage and scale factor during standard API 670 checks.

• CE conformity and RoHS compliance are typically available for 3300 XL cabling; UL/CSA may apply at the system level.

• Manufactured to Bently Nevada quality standards with factory termination and testing.

• Standard manufacturer warranty applies; confirm exact coverage on your PO/quote.

• 3300 XL 5 mm and 8 mm Proximity Probes (various lengths)

• 3300 XL Proximitor Sensors (cabinet-mounted)

• Armor/conduit accessories and panel feed-throughs for harsh environments

If you’re standardizing spares, the 330130-040-00-05 is a sensible stocking length. You might notice that teams often keep a mix of 330130 lengths on hand to cover typical machine-to-cabinet distances without compromising system calibration.