Bently Nevada 330104-00-15-10-02-CN (3300 XL) – 8 mm Proximity Probe for Shaft Vibration and Position Monitoring

• Warranty: 365 days

• Delivery: 1 week for in-stock; no more than one month at the latest

• Payment: 50% advance payment, full payment for delivery

• Express options: fedex, UPS, DHL

• 3300 XL 8 mm probe element – Optimized for non-contact eddy-current measurements on metallic targets (typically 4140 steel).

• System-level sensitivity – When used with the 3300 XL Proximitor sensor, provides -200 mV/mil (≈7.87 mV/µm) for gap and dynamic vibration reading.

• Wide temperature capability – Probe assembly supports high-temperature installations commonly found on hot bearing housings.

• 5 m / 9 m system lengths – Designed to work with standard 5 m or 9 m total system lengths using the appropriate 330130 extension cable.

• Rugged cable construction – Built for industrial environments; routing through conduit or armor is common in many cases.

• Broad monitor compatibility – Pairs cleanly with Bently Nevada 3500 and 3701/40 series monitors for vibration, axial position, and gap measurements.

• Drop-in replacement behavior – Form, fit, and function aligned with 3300 XL specs, which helps reduce calibration time during turnarounds.

You might notice this probe most in heavy-duty rotating machinery. Typical applications include:

• Steam and gas turbines (radial vibration, axial position)

• API 617/618 compressors (journal/thrust bearings)

• Large induction motors and generators (radial vibration and shaft runout)

• Pumps and fans in petrochemical plants (condition monitoring)

• Paper machines and steel mill drives (slow-roll and thermal growth tracking)

• Reliability under heat and noise – 3300 XL probes are known for stable calibration in electrically noisy, high-temperature areas.

• Compatibility – Works seamlessly with existing Bently Nevada 3500 systems, which saves panel rework and commissioning time.

• Lower lifecycle cost – Predictable spares strategy (probe + 330130 cable + Proximitor) keeps maintenance straightforward.

• Application flexibility – Supports both vibration and static gap measurements to cover multiple monitoring points with one sensor family.

• Technical support – We can assist with part matching and gap setup to shorten outages, especially during turnarounds.

One thing I appreciate is how consistent the readings stay after thermal soak. A maintenance lead from a refinery shared that swapping to the 3300 XL 8 mm probes reduced their post-start drift checks from daily to once a week, which seems to be a real-time saver.

• Panel/Cabinet – Mount Proximitor sensors in a ventilated, clean cabinet; follow standard industrial panel practices (24 VDC supply for monitors as applicable).

• Cable routing – Keep probe and extension cable away from high-voltage leads; use grounded metallic conduit in harsh areas.

• Gap setting – Set nominal gap (typically around 2 mm for 8 mm systems) using a feeler gauge; verify with monitor’s DC bias voltage.

• Shielding & grounding – Terminate shields as recommended by Bently Nevada to minimize noise pickup.

• Safety – Lockout/tagout rotating equipment before installation; confirm tip clearance throughout thermal growth and rotor runout.

• Routine checks – Inspect connectors during outages; clean probe tips gently; verify bias voltage and scale factor after major mechanical work.

• Firmware/Monitor updates – Keep 3500/3701 monitor firmware current to maintain trending and alarm features.

• Manufactured under ISO 9001 quality systems

• CE marking and RoHS compliance are typically available for 3300 XL components

• Manufacturer warranty practices apply; our supplied units carry a 365-day warranty

• 3300 XL Proximitor Sensor (5/8 mm system) – Required interface for the probe

• 330130 Extension Cable – Choose length for 5 m or 9 m total system length

• 3500 Monitoring System – For vibration, axial position, and alarm management

If you’re matching an existing point, feel free to share your current probe length and monitor slot details. We typically confirm system length and calibration before shipping so you can bolt it in and go straight to gap check.