Failure Mode Analysis & Prevention: The Bently Nevada 24701-28-10-00-140-04-02
When rotating machinery fails, unplanned downtime costs escalate rapidly. The Bently Nevada 24701-28-10-00-140-04-02 proximity probe housing assembly is engineered to prevent such failures by providing reliable vibration and position monitoring. This assembly integrates a 3300 XL 8mm probe with a 1.0 m (39 in) cable, housed in a rugged 303 stainless steel body with a 304 stainless steel sleeve. It is designed for permanent installation in harsh industrial environments where accurate proximity sensing is critical for early fault detection.
Technical Specifications Breakdown
Key parameters for the 24701-28-10-00-140-04-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Model | 24701 - Proximity Probe Housing Assemblies |
| Probe Option | 28 - 3300 XL 8mm, with approval option |
| Probe Cable Length | 10 = 39 in (1.0 m) |
| Standoff Adapter | No standoff adapter = 00 |
| Probe Penetration | 140 = 14 in |
| Fittings Option | 04 = One 3/4-14 NPT plug only |
| Mounting Thread Option | 02 = 3/4-14 NPT |
| Body Material | 303 stainless steel |
| Sleeve Material | 304 stainless steel |
| Weight (typical, without fittings) | 1.8 kg (4.1 lb) |
| Maximum (C) + (D) with visible probe | 17.0 in (43.18 mm) |
| Maximum (C) + (D) Dimension | 29.2 in (74.2 mm) |
Industry Applications
In steam turbines, the 24701-28-10-00-140-04-02 monitors shaft radial vibration and axial position. Early detection of abnormal vibration patterns prevents catastrophic bearing failures. In centrifugal compressors, the 14-inch probe penetration allows installation through casing walls, while the 3/4-14 NPT mounting thread ensures a leak-proof seal. The 303/304 stainless steel construction resists corrosion in refinery and chemical plant environments.
Installation & Setup Guidance
Mount the housing assembly using the 3/4-14 NPT thread into a prepared port. Ensure the probe tip is positioned at the correct gap (typically 0.050 to 0.080 inches from the target surface, but verify per Bently Nevada guidelines). The 1.0 m probe cable connects to a proximity transducer. Use the supplied 3/4-14 NPT plug for unused conduit ports to maintain environmental sealing. Torque the housing to manufacturer specifications to avoid thread damage.
Maintenance & Reliability
Periodically inspect the dome cover and O-rings for signs of wear or contamination. The stainless steel body and sleeve resist corrosion, but in aggressive environments, verify seal integrity annually. The 3300 XL 8mm probe is a proven design for long-term reliability. Replace the assembly if probe tip damage or cable wear is detected.
Compatibility & Integration
This assembly is designed for use with Bently Nevada 3300 XL proximity transducer systems. The 8mm probe diameter and 1.0 m cable length are standard for most Bently Nevada monitors. The 3/4-14 NPT mounting thread is compatible with common industrial conduit and port fittings.
Selection Guide & Purchasing Advice
When selecting a proximity probe housing assembly, match the probe penetration (14 in) and mounting thread (3/4-14 NPT) to your machine's port depth and thread specification. The 24701-28-10-00-140-04-02 is available new and original in factory packing from AutoDCSTech. Each unit carries a 12-month factory warranty. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 24701-28-10-00-140-04-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
