Bently Nevada 330104-00-12-05-02-CN 3300 XL Spare Part

Overview

Bently Nevada 330104-00-12-05-02-CN 3300 XL Maintenance-Proven Spare Part for Factory Uptime

The Bently Nevada 330104-00-12-05-02-CN is an original proximity transducer engineered for the 3300 XL vibration monitoring system — one of the most widely deployed condition monitoring platforms in rotating machinery protection across oil & gas, power generation, petrochemical, and heavy manufacturing industries. When a vibration channel goes offline, every minute of unplanned downtime translates directly into production loss and safety risk. Stocking a verified replacement of the 330104-00-12-05-02-CN is a fundamental element of any serious predictive maintenance program.

This transducer operates as part of the Bently Nevada 3300 XL proximity probe system, which includes the probe, extension cable, and proximitor sensor working together as a matched set. The 330104-00-12-05-02-CN is a 25 mm diameter probe with a 5-metre armored extension cable, designed for eddy-current non-contact displacement measurement of shaft vibration, axial position, and differential expansion on turbines, compressors, pumps, and motors. Its robust stainless-steel housing and field-proven connector design make it a preferred choice for maintenance engineers who need reliable, repeatable performance in harsh industrial environments.

Each unit shipped from KNMKS undergoes pre-shipment functional verification to confirm output sensitivity, gap voltage linearity, and connector integrity — ensuring the replacement part performs to OEM specification from the moment it is installed on site.

Spare Maintenance Table

Maintenance Planning for Continuous Operation

Replacing the 330104-00-12-05-02-CN in the field is rarely an isolated task. Experienced maintenance engineers know that a failed or degraded proximity probe is often a symptom of broader issues within the vibration monitoring loop. Before returning the machine to service, a thorough inspection of the complete transducer chain is essential.

Start with the Bently Nevada 3300/16 or 3300/55 Proximitor Sensor — the signal conditioning module that pairs with this probe. A probe replacement without verifying the proximitor’s bias voltage output and scale factor can result in a false-healthy reading that masks real shaft movement. Check the proximitor’s DC output at the gap voltage test point and confirm it falls within the linear range for the installed gap.

Next, inspect the 3300 XL extension cable (typically a 5-metre armored cable matched to this probe). Extension cables are frequently damaged by heat, vibration fatigue, or mechanical abrasion near bearing housings. A cracked or shorted cable will corrupt the gap voltage signal even with a new probe installed. Replace the cable as a matched set whenever probe replacement is performed.

The 3300 XL monitor rack — including the 3300/20 or 3300/25 vibration monitor cards — should also be inspected during any probe replacement outage. Verify that the monitor channel is correctly configured for the probe sensitivity (7.87 V/mm) and that alarm setpoints have not drifted. A channel that has been in alarm or fault state for an extended period may have accumulated configuration changes that need to be reviewed and reset.

For machines where the 330104-00-12-05-02-CN monitors axial position or differential expansion, also verify the thrust position monitor channel and its associated relay output wiring. Confirm that the relay contacts feeding the machine protection logic (ESD or trip relay) are clean and within contact resistance specification. Corroded or high-resistance relay contacts in the protection circuit can cause nuisance trips or, more dangerously, fail-to-trip conditions.

Finally, review the power supply module feeding the 3300 XL rack — typically a dedicated -24 VDC instrument power supply. Voltage sag or ripple on the supply rail will directly affect proximitor output accuracy. If the power supply is original equipment and has not been serviced in several years, consider scheduling a parallel replacement during the same maintenance window to avoid a repeat outage.

For sites running integrated condition monitoring with a System 1 or System 1 Evolution software platform, confirm that the replacement probe’s channel data is correctly mapped and that historical baseline data is preserved or reset as appropriate for the new installation.

Site Replacement Workflow

Step 1 — Isolate and de-energize. Follow site LOTO procedures. Confirm the machine is at rest and the 3300 XL rack is de-energized or the affected channel is bypassed per your site bypass procedure to prevent a spurious trip during probe removal.

Step 2 — Document the existing installation. Record the installed gap (in mils or mm), the proximitor bias voltage, and the current alarm setpoints before disconnecting anything. Photograph the probe tip-to-shaft gap and cable routing for reference.

Step 3 — Remove the old probe and extension cable. Disconnect the extension cable from the proximitor sensor first. Remove the probe from its mounting bracket, noting the thread engagement depth and any locking compound used. Inspect the probe tip for impact damage or contamination that may indicate a shaft contact event.

Step 4 — Install the 330104-00-12-05-02-CN replacement. Thread the new probe to the same engagement depth as the original. Set the gap to the OEM-specified value (typically 1.0 mm / 40 mil for standard 3300 XL installations, but always verify against the machine OEM’s documentation). Connect the matched extension cable and route it away from heat sources and vibration nodes.

Step 5 — Verify the signal chain. Energize the proximitor and measure the DC gap voltage at the monitor input. Confirm the reading is within the linear range and matches the expected value for the installed gap. Compare against the pre-replacement baseline recorded in Step 2.

Step 6 — Restore and test. Remove the channel bypass, restore alarm setpoints, and confirm the monitor is in normal (non-alarm, non-bypass) state before releasing the machine for restart. Log the replacement in your CMMS with the new probe serial number and installation date to support future maintenance planning.

This structured replacement workflow minimizes the risk of re-introducing the machine to service with an incorrectly installed or misconfigured transducer — a common cause of repeat failures and support terms disputes.

Spare Parts Support FAQ

Q1: Is the 330104-00-12-05-02-CN a direct drop-in replacement for older 3300 series probes?
The 330104-00-12-05-02-CN is designed for the 3300 XL system and is mechanically and electrically compatible with standard 3300 XL Proximitor Sensors. However, it is not directly interchangeable with earlier 3300 series (non-XL) probes without verifying the proximitor model and scale factor. Always confirm the installed proximitor model before ordering a replacement probe to ensure system-level compatibility.

Q2: What does the support terms confirmed by quotation cover, and how is a support terms claim handled?
The support terms confirmed by quotation cover manufacturing defects and functional failures under normal operating conditions from the date of shipment. It does not cover damage resulting from incorrect installation, shaft contact, or operation outside the specified gap and voltage range. To initiate a support terms claim, contact KNMKS at [email protected] with the order number, installation date, and a description of the failure mode. We will arrange return shipping and provide a replacement or credit within the agreed lead time.

Q3: Can KNMKS support long-term or blanket purchase orders for the 330104-00-12-05-02-CN?
Yes. KNMKS supports long-term supply agreements and blanket PO arrangements for maintenance-critical spare parts including the 330104-00-12-05-02-CN. For plants operating multiple machines with 3300 XL monitoring systems, we recommend establishing a standing inventory of at least two probe-and-cable sets per critical machine train to support rapid response to unplanned failures. Contact our sales team to discuss pricing, lead time commitments, and consignment stock options.

Q4: How do I verify the 330104-00-12-05-02-CN is genuine OEM before installation?
Each unit shipped by KNMKS includes original manufacturer labeling and a pre-shipment test report confirming output sensitivity and gap voltage linearity. Upon receipt, inspect the probe tip for the Bently Nevada part number marking and verify the connector type matches your installation (CN integral connector). If you require additional traceability documentation or third-party inspection, please specify this requirement at the time of order.

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Product Identification

Brand / Ecosystem

Bently Nevada
Bently Nevada

Model / Series

330104-00-12-05-02-CN
Bently Nevada 3300 XL / 3301 Series

Product Family

Sensors

Availability Status

Available on request after model and quantity confirmation

Inquiry Type

B2B RFQ, replacement inquiry and project spare-part request

Pre-Quote Check

Exact SKU, brand, series, quantity, nameplate photos and destination country are checked before quotation

Specification & Inquiry Focus

Sensor range

Photoelectric, proximity and process sensors

Common needs

Output type, distance and connector

Project support

Machine detection and replacement inquiry

Inquiry Support

• NPN/PNP, analog and digital output checking
• Connector and cable compatibility review
• Fast inquiry support for maintenance teams

What to Send Us

• Brand and exact model number: Bently Nevada 330104-00-12-05-02-CN
• Quantity and required delivery time
• Application, replacement requirement or nameplate photo
• Destination country and shipping preference