Bently Nevada 330103-00-04-10-01-00 – 8 mm Proximity Probe for Reliable Shaft Vibration and Position Monitoring

The Bently Nevada 330103-00-04-10-01-00 is part of the 3300 XL 8 mm eddy-current proximity system, typically paired with a matching 3300 XL Proximitor Sensor and an extension cable to deliver stable, repeatable shaft vibration and position measurements. From my experience, this model is a go-to choice when plants want a proven probe that stays calibrated and holds up in hot, oily, and high-vibration areas around turbines, compressors, motors, and critical pumps. You might notice that the “-04” code points to a 4 m integral cable, and the “-01” usually indicates the standard 3/8-24 UNF mounting thread—handy for drop-in replacements on existing brackets.

Order Placement Process and Guarantees

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

Key Features

• 8 mm probe tip – Suited for standard radial vibration and shaft position measurements on medium-to-large rotors.
• Part of the 3300 XL system – Works with the matching Proximitor Sensor and extension cable for the classic 200 mV/mil (7.87 mV/µm) sensitivity.
• Rugged construction – Typically withstands oil splash, mechanical shock, and continuous operation in harsh machine trains.
• High temperature capability – Probe and cable are designed for elevated temperatures commonly found around bearings and seals.
• Threaded mounting (3/8-24 UNF) – The -01 code generally maps to the standard UNF thread for easy retrofit to existing brackets and targets.
• 4 m integral probe cable – The -04 length is convenient for routing to the extension cable junction while keeping signal integrity strong.
• Stable gap measurement – Known for low drift and consistent linearity when installed with the correct target material and gap.

Technical Specifications

Application Fields

This probe is commonly applied on:

• Steam and gas turbines – radial vibration, shaft position, and differential expansion setups.
• Compressors and expanders – radial vibration and rotor-to-stator clearance checks.
• Large motors, generators, and fans – continuous condition monitoring to reduce unplanned downtime.
• API 670 compliant protection systems – when paired with the correct Proximitor and monitor.

Advantages & Value

• Reliability – The 3300 XL family has a strong track record in critical rotating assets. It seems to be the “safe” choice for plants standardizing on Bently Nevada.
• Compatibility – Fits existing 3300 XL chains (probe + extension cable + Proximitor), simplifying spares and maintenance.
• Lifecycle cost – Stable calibration and fewer nuisance trips typically translate to lower maintenance hours and fewer callouts.
• Support – Easy to commission with standard gap tools and widely available documentation and field know‑how.

Installation & Maintenance

• Mounting – Use the correct threaded bracket or probe holder (3/8-24 UNF). Locknut should be secured to specified torque to avoid probe movement.
• Gap setting – Set the probe to mid‑range using the Proximitor reading; verify linear response across the expected shaft movement.
• Cable routing – Maintain bend radius and avoid sharp edges or heat sources; keep away from strong EMI to preserve signal integrity.
• Cabinet/monitor – Install the Proximitor and monitor in a ventilated industrial cabinet; proper grounding and shielding are essential.
• Routine checks – Periodically verify gap, inspect cable jackets/connectors, clean probe tip if fouling is suspected, and document readings for trend comparison.

Quality & Certifications

• CE compliant; manufactured under ISO 9001 quality systems
• RoHS compliant materials in most cases for this series
• Manufacturer’s standard quality controls for 3300 XL transducer systems
• Warranty: 365 days

One thing I appreciate is how predictable the 3300 XL probe response is when the total system length (probe + extension cable) matches the Proximitor model. If you’re replacing an existing probe, sharing your installed cable length helps ensure we supply a like‑for‑like configuration that drops straight in.