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- Bently Nevada
- 4190-01
- 3300 XL Clamping Aluminum Probe Bracket
- USA
- 9.53 mm
- 3 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Bently Nevada 4190-01 is an adapter used with compatible 3300 XL proximity probe mounting arrangements. It provides a threaded interface between the probe installation and the machine mounting point, allowing the probe to be secured in applications where the existing port dimensions and thread configuration need to be accommodated.
In rotating machinery such as centrifugal compressors, steam turbines, and industrial pumps, proximity probes measure the gap between the probe tip and a conductive shaft. Correct mounting is essential because the probe position determines the measurement gap, while mechanical movement or an unsuitable mounting interface can affect the consistency of the signal received by the monitoring system.
The 4190-01 has a 9.53 mm internal diameter, a 1/4-18 NPT internal thread, and a 1/2-14 NPT external thread. These interfaces allow the adapter to accommodate the specified probe-side connection and corresponding machine-side port. Its stainless-steel construction is suitable for industrial mounting applications where mechanical durability and corrosion resistance are relevant considerations.
Although the supplied product title associates this item with a clamping aluminum probe bracket, the 4190-01 is identified in the 3300 XL transducer accessories documentation as an adapter. It should not be confused with the separate 137491 aluminum clamp bracket, which secures smooth-case probes using a clamping mechanism. Confirming the component’s function and thread arrangement before ordering helps prevent installation mismatches during maintenance or retrofit work.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Product Series | 3300 XL Transducer Accessories |
| Model | 4190-01 |
| Product Type | Probe Mounting Adapter |
| Material | Stainless Steel |
| Internal Diameter | 9.53 mm (0.375 in) |
| Internal Thread Type | 1/4-18 NPT |
| External Thread Type | 1/2-14 NPT |
| Overall Length | 38.1 mm (1.50 in) |
| Application | Proximity probe mounting interface |
| Shipping Weight | 3 kg |
Product Features
- Defined thread interfaces: Combines a 1/4-18 NPT internal thread with a 1/2-14 NPT external thread.
- Specified internal diameter: The 9.53 mm opening supports the intended adapter configuration.
- Stainless-steel construction: Suitable for industrial mounting environments where resistance to corrosion and mechanical wear is important.
- Integration with 3300 XL accessories: Belongs to the accessory family used for proximity probe installation and mounting.
- Compact threaded connection: Provides an adapter interface without requiring a separate large mounting assembly.
- Replacement identification: The 4190-01 part number distinguishes this thread combination from other adapters in the same accessory family.
Working Principle
The 4190-01 is a passive mechanical component. It does not detect shaft movement, generate an electrical signal, or process vibration data. Its function is to provide a compatible threaded mounting interface for the applicable proximity probe installation.
The mounting arrangement can be represented as:
Machine Port → 4190-01 Adapter → Compatible Probe Mounting Arrangement → Proximity Probe → Proximitor Sensor → Monitoring System
During installation, the external thread engages with the corresponding machine-side port, while the internal thread accommodates the specified mating connection. Once installed correctly, the adapter helps establish the mechanical interface needed to position the probe relative to the monitored shaft.
For example, a maintenance team replacing a proximity measurement component on a centrifugal compressor may find that the machine port and required probe mounting connection use different thread sizes. A suitable adapter can bridge that interface, provided the thread types, dimensions, sealing method, and installation requirements match.
The adapter does not determine the probe’s electrical characteristics or measurement range. Those depend on the selected probe, extension cable, Proximitor Sensor, and monitoring channel. Its contribution is mechanical: providing the required connection while maintaining the intended mounting arrangement.
Role in a Machinery Monitoring Architecture
The 4190-01 sits within the mechanical portion of a proximity measurement installation. It connects the mounting interface to the applicable probe arrangement, while the probe and electronic components perform the actual displacement measurement.
Machine Housing → Threaded Adapter → Probe Mounting Point → Proximity Probe → Proximitor Sensor → Machinery Monitor
| System Element | Function |
|---|---|
| Machine Housing or Port | Provides the mounting location |
| 4190-01 Adapter | Connects the specified internal and external thread interfaces |
| Probe Mounting Arrangement | Holds the probe in the required position |
| Proximity Probe | Detects changes in the gap between the probe and shaft |
| Extension Cable | Connects the probe to the Proximitor Sensor |
| Proximitor Sensor | Converts the probe response into an electrical output |
| Machinery Monitoring System | Processes vibration or position measurements |
Correct adapter selection helps maintain the intended mounting geometry, but the completed installation must still be checked for probe clearance, thread engagement, sealing, and measurement setup.
Industrial Applications
| Application | Typical Use |
|---|---|
| Centrifugal Compressors | Adapting a compatible probe mounting interface for shaft vibration monitoring |
| Steam Turbines | Supporting proximity probe installation at designated measurement points |
| Industrial Pumps | Connecting compatible probe mounting arrangements to machine ports |
| Power Generation Equipment | Supporting maintenance of shaft displacement measurement installations |
| Refinery Rotating Machinery | Replacing a mounting adapter during proximity system maintenance |
| Compressor Overhaul Projects | Matching the required mounting threads during equipment reassembly |
| Machinery Retrofit Work | Accommodating compatible differences between the machine port and probe connection |
The 4190-01 should be selected according to the actual thread combination and mounting requirements. Its suitability cannot be established from the internal diameter alone.
Installation and Maintenance
- Verify the part number: Confirm that 4190-01 is the required adapter for the intended mounting arrangement.
- Check the internal thread: Verify that the mating component uses the specified 1/4-18 NPT connection.
- Check the external thread: Confirm compatibility with the machine-side 1/2-14 NPT port.
- Inspect the internal opening: Check for contamination, burrs, or damage that could interfere with installation.
- Examine the thread surfaces: Look for deformation, corrosion, cross-threading, or other defects before assembly.
- Confirm the mounting geometry: Ensure that the adapter allows the probe to reach its intended position without mechanical interference.
- Verify the sealing method: Use the approved sealing arrangement for the applicable threaded connection and process environment.
- Inspect the adapter body: Check for cracks, distortion, or damage caused by previous installation or removal.
- Avoid excessive tightening: Follow the applicable installation procedure to prevent thread damage or distortion of connected components.
- Check probe alignment: After mounting, verify that the probe faces the target correctly and has sufficient clearance.
- Validate the measurement channel: Confirm that the probe, extension cable, Proximitor Sensor, and monitoring input operate as an appropriate matched system.
- Record maintenance details: Document the installed adapter, thread configuration, sealing method, and any replacement work for future reference.
Before removing an adapter from operating machinery, follow the site’s isolation and safety procedures. If the adapter is part of a pressurized enclosure or process connection, ensure that the equipment is in a safe condition before loosening the fitting.
Compatible System Components
The 4190-01 is a mechanical accessory and must be selected according to the actual probe mounting arrangement. Compatibility with the wider 3300 XL system depends on the probe and electronic components installed alongside it.
| Component | Function |
|---|---|
| Bently Nevada 3300 XL Proximity Probe | Measures the gap between the probe tip and a conductive target |
| Bently Nevada 3300 XL Extension Cable | Connects a compatible probe to the Proximitor Sensor |
| Bently Nevada 3300 XL Proximitor Sensor | Converts the probe response into a measurement output |
| Bently Nevada 137491 Aluminum Probe Clamp Bracket | Clamps compatible smooth-case probes |
| Bently Nevada 137492 Aluminum Probe Threaded Mounting Bracket | Provides a threaded mounting arrangement for compatible probes |
| Compatible Machine Port | Provides the external threaded interface for the adapter |
Recommended Related Models
| Model | Product Type | Relevance |
|---|---|---|
| Bently Nevada 4190-03 | Probe Mounting Adapter | Alternative adapter with a larger external thread |
| Bently Nevada 4190-04 | Probe Mounting Adapter | Adapter with a smaller internal diameter and different thread configuration |
| Bently Nevada 4190-06 | Probe Mounting Adapter | Adapter with a 3/8-24 UNF internal thread |
| Bently Nevada 4190-16 | Probe Mounting Adapter | Adapter with a 3/4-14 NPT external thread |
| Bently Nevada 137491 | Aluminum Probe Clamp Bracket | Clamping bracket for compatible smooth-case probes |
| Bently Nevada 137492 | Aluminum Probe Threaded Mounting Bracket | Threaded mounting bracket for compatible proximity probes |
Key Advantages
- Provides a defined interface between two different NPT thread sizes.
- Uses a specified 9.53 mm internal diameter.
- Offers a stainless-steel construction for industrial mounting applications.
- Supports maintenance and retrofit work involving compatible proximity probe installations.
- Helps match mounting hardware to the actual machine port and probe connection.
Technical FAQs
What is the difference between the 4190-01 adapter and the 137491 aluminum clamp bracket?
The 4190-01 is a threaded adapter with 1/4-18 NPT internal and 1/2-14 NPT external threads. The 137491 is a clamp bracket intended for compatible smooth-case probes. They serve different mechanical purposes and should not be treated as interchangeable parts.
Can the 4190-01 be used with any 3300 XL proximity probe?
Not automatically. Compatibility depends on the probe mounting arrangement, thread interfaces, required insertion position, and machine port. The probe’s electrical compatibility with the extension cable and Proximitor Sensor must also be considered separately.
Why is the internal diameter important when selecting this adapter?
The internal diameter helps identify the opening and mechanical fit associated with the specified adapter configuration. However, the diameter alone does not establish compatibility; the internal and external thread types and the overall mounting geometry must also match.
Does the 4190-01 affect the electrical output of a proximity probe?
The adapter is a passive mechanical component and does not directly process the probe signal. However, incorrect installation can affect probe positioning or clearance, which may indirectly compromise measurement quality.