Bently Nevada 330103-00-03-05-02-05-2 Proximity Probe – Robust 11 mm transducer for shaft vibration and position monitoring

The Bently Nevada 330103-00-03-05-02-05-2 is part of the 3300 XL 11 mm proximity transducer system, built for tough rotating equipment where you need more clearance and a stable signal. It’s the probe component of the classic three-part system (probe + extension cable + Proximitor sensor), and it’s typically paired with a matching 3300 XL Proximitor to deliver non-contact displacement measurements. From my experience, the 11 mm series is the go-to on large shafts, thicker casings, or dirtier environments where smaller probes struggle to keep a consistent gap.

You might notice that the long code defines cable length, tip/thread options, and armor preferences. If you’re replacing an installed probe, we can cross-check those suffixes with your machine drawings or photos to make sure it drops right in—no surprises with reach or mounting.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery time: 1 week if in stock; no more than one month at the latest
• Payment: 50% advance payment; full payment prior to delivery
• Express delivery: FedEx, UPS, DHL

Key Features

• 11 mm eddy-current probe head – Provides stable measurements where larger standoff is needed and target surfaces aren’t pristine.
• 3300 XL system compatibility – Designed to work with the 3300 XL Proximitor Sensor and the matching extension cable for calibrated performance.
• Displacement output (via Proximitor) – In most cases, the system sensitivity is 200 mV/mil (≈7.87 mV/μm), suitable for vibration and shaft position trends.
• Industrial-grade build – Sealed probe body with chemically resistant cable jackets, typically suitable for oil-lubricated machine cavities.
• Flexible mounting – Threaded installation with locknut; supports through-tube or bracket assemblies on compressors, turbines, and large pumps.
• Procurement-friendly – The long model code maps to cable length and mechanical options, so replacements can be matched exactly to existing hardware.

Technical Specifications

Brand / Model	Bently Nevada / 330103-00-03-05-02-05-2
HS Code	903180 (Measuring/monitoring instruments, other)
Product Type	Eddy-current proximity probe (11 mm series, for 3300 XL systems)
System Pairing	Works with 3300 XL Proximitor Sensor and matching extension cable (11 mm system)
Sensitivity (System)	Typically 200 mV/mil (≈7.87 mV/μm) when used with the appropriate Proximitor
Power Requirements	N/A for probe; Proximitor is typically powered by a DC supply
Signal Input/Output	Probe connects to Proximitor via integral cable; Proximitor outputs dynamic and gap (DC) voltage
Installation Method	Threaded probe with locknut; through-tube or bracket mounting; gap set to target
Dimensions & Weight	11 mm probe tip; integral cable (length/armor per model suffix)

Application Fields

Typically used on critical rotating assets: steam and gas turbines, compressors, large pumps, motors, gearboxes, blowers, and fans. Engineers deploy the 11 mm series where the machine casing is thick or the shaft is large, giving more working clearance while keeping a strong signal. We see it often for:

• Radial vibration and shaft position on turbine/compressor bearings
• Thrust position on large machines with limited access
• Slow-roll or runout checks during overhauls
• Harsh services in oil & gas, petrochemical, power generation, mining, cement, and paper mills

A maintenance engineer at a refinery told us this model “handled the dirt and oil mist better than the small probes,” which seems to be why many teams standardize on the 11 mm where conditions are less than perfect.

Advantages & Value

• Reliability in rough environments – Stable readings with a robust mechanical design.
• Compatibility – Pairs with the 3300 XL Proximitor and standard Bently Nevada cabling, easing spares management.
• Lower downtime risk – Like-for-like replacement by suffix helps avoid rework or re-machining of mounts.
• Procurement efficiency – We help verify exact suffixes from your nameplate or BOM, which typically shortens turnaround.
• Technical support – Gap setting, cable routing, and shielding advice to make commissioning smoother.

Installation & Maintenance

• Mounting: Install the threaded probe with its locknut; ensure the tip faces a clean, flat target surface. Through-tube or bracket-mount assemblies are common on bearing housings.
• Gap setting: Set the static gap using the Proximitor’s DC output. Target material matters—4140 steel is the standard reference; other alloys may require scaling.
• Cable routing: Avoid tight bends (keep generous bend radius), protect leads from heat and mechanical damage, and keep distance from high-EMI sources. Use proper shielding/grounding per Bently Nevada practices.
• Cabinet/Interface: The Proximitor mounts in a cabinet or junction box with ventilation; wiring to the monitoring system should be clearly labeled and strain-relieved.
• Routine checks: Periodically verify gap voltage, inspect cable armor/jackets, clean the probe tip during outages, and confirm monitor readings after any mechanical work. Firmware/monitor updates where applicable.
• Safety: Lockout/tagout the machine; do not adjust the probe on a running rotor unless your procedure explicitly allows it and risks are controlled.

Quality & Certifications

• Certifications: Typically CE compliant; RoHS conformity available on many 3300 XL components. Documentation can be provided on request.
• Manufacturer’s policy: Bently Nevada standard compliance and test procedures for the 3300 XL series.
• Warranty: 365 days (our supply guarantee).

Related/Supporting Components

• 3300 XL Proximitor Sensor (matching 11 mm system)
• 3300 XL Extension Cable (length and armor per installation)
• Mounting hardware: probe brackets, through-tubes, locknuts, and protective conduits

If you share the exact suffix code currently installed, we’ll validate cable length and mounting thread so the replacement 330103-00-03-05-02-05-2 fits first time and keeps your calibration consistent.