Bently Nevada 288055-01 | Shaft Vibration Probe, New Original

Description

Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.

3. Key Technical Specifications

Do not order against this table alone. I cannot confirm the probe diameter, cable length, connector type, or sensitivity from the base number. Match every line against the marking on your existing probe and the OEM datasheet.

4. Product Introduction

The Bently Nevada 288055-01 is a proximity probe from the 3300 XL NSv series. The NSv designation stands for Narrow Side View — these probes are built for installations where a standard 3300 XL probe will not fit because the side view clearance is too tight. They measure shaft vibration, radial position, axial thrust, or eccentricity using the eddy current principle.

The engineering value is the form factor. On small steam turbines, compressors, and motors, the bearing housing often does not have room for a standard probe and its mounting hardware. The NSv probe fits into that space without a custom bracket. In my experience, that is what makes the difference between a machine that can be monitored and one that runs without protection.

Here is the catch, and it is why I am not handing you a complete part number: the 288055-01 base number does not encode the probe diameter, the cable length, or the connector type. Bently Nevada uses a longer ordering format for the full assembly, and the base number alone is not enough to match a replacement. Before you order, read the full marking on the probe body and the cable, and compare it to the replacement. If you send me a photo of the probe label and the machine it came out of, I will confirm what you are looking at.

288055-01

288055-01

288055-01

288055-01

5. Application Scenarios & Field Experience

Part 1 – Narrative Paragraph

The failure that causes the most false trips on a proximity probe system is not the probe itself — it is a mismatched extension cable or a Proximitor that is calibrated for a different total cable length. I have seen a plant replace a probe with the correct part number and still get a “not OK” indication because the extension cable was a different length than the one the Proximitor was configured for. On Bently Nevada systems, the probe, the extension cable, and the Proximitor form a matched set. Change one and you change the calibration. That is the rule that matters more than any single specification on the datasheet.

Part 2 – Numbered List (Application Scenarios)

1. Power Generation – Small Steam Turbine Monitoring – The NSv probe measures shaft vibration on a small steam turbine where the bearing housing clearance is too tight for a standard probe. It feeds the 3500 rack for protection and trending.
2. Oil & Gas – Reciprocating Compressor Rod Drop – Used to measure rod position and crosshead vibration on reciprocating compressors. The narrow side view allows mounting where a standard probe would interfere with the frame.
3. Petrochemical – Small Motor Bearing Monitoring – The probe measures bearing condition on motors and small compressors in tight installations. The eddy current principle works in the oil-filled environment of a bearing housing.
4. Hydroelectric – Hydro Turbine Eccentricity – Used to measure shaft eccentricity on small hydro units. The narrow form factor fits the bearing bracket without a custom adapter.

Part 3 – Short Field Story

A gas plant had a small compressor that would trip on “high radial vibration” after every maintenance shutdown. The crew had replaced the probe and the extension cable and the fault kept returning. We asked for the full part number on the probe and the Proximitor. It turned out the replacement probe had a different cable length than the original, and the Proximitor was still calibrated for the old length. The system was reading a scaled signal that looked like a real vibration event at start-up. Once the correct probe and cable set was installed and the Proximitor verified, the trips stopped. The hardware had been fine — the calibration was wrong.

6. Standard Operating Procedure (SOP) for Quality Control

• Visual & Origin Inspection – We verify the Bently Nevada marking, the 288055-01 part number, and the date code. We inspect the probe tip, the cable jacket, and the connector for damage. A probe with a bent tip, a cracked connector, or a damaged cable jacket is rejected.
• Part Number and Revision Documentation – We read and photograph the full part number, the probe diameter, the cable length, and the connector type from the probe body and the cable. That record ships with the probe so you can compare it against the unit you are replacing.
• Electrical Verification – We measure the probe’s DC resistance and check for shorts or opens. We verify the probe’s sensitivity against the OEM specification using a calibrated target.
• Mechanical Fit Verification – We verify the thread type, the tip diameter, and the case dimensions against the OEM specification. A probe that does not match the mounting thread will not install correctly.
• Matched System Check – We verify the probe, extension cable, and Proximitor form a matched set with the correct total cable length. A mismatched set will cause a calibration error.
• ESD-Safe Packaging – The probe is wrapped in anti-static film, coiled to the specified bend radius, and secured in a rigid container with the tip protected. The package is labeled with the part number and the cable length.

7. Frequently Asked Questions (FAQ)

Q1: What probe diameter is the 288055-01?

A: I cannot confirm the probe diameter from the base number alone. The 3300 XL NSv series includes multiple probe diameters, and the 288055-01 number does not encode which one you have. Read the marking on your existing probe body and compare it to the replacement. If you send us a photo of the label, we will confirm it before you order.

Q2: What is the cable length on this probe?

A: The base number does not encode cable length. Bently Nevada uses a longer ordering format for the full assembly, and the cable length is one of the parameters that determines compatibility with the Proximitor. Measure your existing cable or read the marking on the cable jacket, and match it exactly. A probe with the wrong cable length will not calibrate correctly with your Proximitor.

Q3: What is the warranty on this probe?

A: We offer a 12-month warranty from the ship date. It covers manufacturing defects under normal operating conditions. It does not cover damage from incorrect installation, mechanical impact, or operation beyond the rated range. For electrical components, the warranty is void if the probe shows evidence of overvoltage or physical damage. Every probe ships with a test report.

Q4: Do you actually have this in stock?

A: Bently Nevada probe inventory moves quickly, and stock varies by cable length and connector type. Confirm availability before you plan an outage. If we are out of the exact configuration you need, we will tell you what we actually have rather than quote a date we cannot hold.

Q5: Any installation pitfalls I should watch for?

A: Four. First, on proximity probe systems, the probe, extension cable, and Proximitor form a matched set — changing one changes the calibration. Verify the total cable length and the Proximitor configuration before you install. Second, route the probe cable away from high-voltage wiring and secure it at the original clamp points; a cable that rubs will fail in weeks. Third, verify the mounting thread and the probe gap before you tighten the locknut — overtorque damages the probe tip. Fourth, after the swap, verify the reading with a known reference before you return the protection system to service. A probe that powers up is not necessarily giving correct data.