



Product Overview
The Bently Nevada 21000-00-00-150-00-02 Proximity Probe Housing Assembly is a rugged external mounting enclosure designed for Bently Nevada proximity transducer installations. Manufactured with an aluminum housing and a 304 stainless-steel probe sleeve, it provides reliable environmental protection while allowing convenient probe inspection, adjustment, and replacement without disassembling the monitored equipment. The assembly is fully compatible with API 670 external mounting practices and is widely used on rotating machinery requiring dependable vibration monitoring.
This configuration is supplied without a proximity probe, without a probe cable, without a standoff adapter, features a 15.0 in. (381 mm) probe penetration, includes no conduit fittings (Option 00), and uses a 3/4-14 NPT mounting thread (Option 02). The extended sleeve length is suitable for installations requiring deeper probe penetration through bearing housings or machine casings.
Technical Specifications
| Specification | Description |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 21000-00-00-150-00-02 |
| Product Type | Proximity Probe Housing Assembly |
| Housing Series | 21000 |
| Housing Material | Aluminum |
| Probe Sleeve Material | 304 Stainless Steel |
| Probe Included | No |
| Probe Cable Included | No |
| Standoff Adapter | None |
| Probe Penetration | 15.0 in. (381 mm) |
| Fittings Option | 00 – No Fittings |
| Mounting Thread | 02 – 3/4-14 NPT |
| Dome Cover | Threaded Aluminum Cover |
| Sealing | O-Ring Sealed Construction |
| Compatible Probes | 3300 XL 8 mm, 3300 XL 11 mm, 3300 XL NSv Reverse Mount Probes |
| Typical Operating Temperature* | -51°C to +177°C (-60°F to +351°F) |
| Housing Dimensions | Sleeve Penetration: 381 mm (15.0 in.) |
| Product Weight | Approx. 1.1 kg |
| Shipping Weight | Approx. 1.5 kg |
| Country of Origin | USA |
Typical Applications
The 21000-00-00-150-00-02 is designed for external mounting of proximity probes on rotating equipment where extended probe penetration is required.
Typical applications include:
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Steam turbines
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Gas turbines
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Centrifugal compressors
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Industrial pumps
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Gearboxes
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Electric generators
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Large rotating equipment
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Machinery maintenance and retrofit projects
The 15-inch sleeve configuration provides additional installation flexibility for equipment with deep bearing housings while maintaining convenient access for routine maintenance.
Technical FAQs
1. What is the Bently Nevada 21000-00-00-150-00-02?
It is an external Proximity Probe Housing Assembly designed for mounting compatible Bently Nevada reverse-mount proximity probes.
2. Does this assembly include a proximity probe?
No. Option A:00 specifies that no probe is supplied with the housing.
3. Is a probe cable included?
No. Option B:00 indicates that no probe cable is included.
4. What does the "150" option indicate?
The 150 option specifies a 15.0-inch (381 mm) probe penetration.
5. What does Option "00" for fittings mean?
It indicates that the housing is supplied without conduit fittings.
6. Which mounting thread is provided?
Option 02 specifies a 3/4-14 NPT mounting thread.
7. Which proximity probes are compatible?
The housing supports compatible 3300 XL 8 mm, 3300 XL 11 mm, and 3300 XL NSv reverse-mount probes.
8. What materials are used in the housing?
The housing body is aluminum, while the probe sleeve is manufactured from 304 stainless steel.
9. What is the approximate product weight?
The housing weighs approximately 1.1 kg, with a typical shipping weight of approximately 1.5 kg.
10. Is this model suitable for long probe installations?
Yes. The 15-inch sleeve penetration is intended for applications requiring extended probe reach through larger machine housings.