Reliable External Housing for Precision Shaft Monitoring
The Bently Nevada 21000-28-05-20-035-04-02 Proximity Probe Housing Assembly (3300 XL) is engineered to provide a robust and secure mounting solution for 3300 XL 8 mm reverse-mount proximity probes used in critical machinery protection systems. Designed to maintain probe alignment while protecting sensitive components from vibration, moisture, dust, and mechanical damage, this housing assembly helps ensure consistent measurement accuracy throughout the life of the monitoring system.
This configuration features a 2.0-inch standoff adapter, 3.5-inch probe penetration, 0.5 m (20 in) integral probe cable, and a 3/4-14 NPT mounting thread, making it well suited for applications requiring additional installation clearance while maintaining compact probe insertion. The aluminum housing with a 304 stainless-steel sleeve delivers exceptional durability and corrosion resistance for continuous operation in demanding industrial environments.
Technical Specifications
| Parameter | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 21000-28-05-20-035-04-02 |
| Product Type | Proximity Probe Housing Assembly (3300 XL) |
| Compatible Probe | 3300 XL 8 mm Reverse-Mount Proximity Probe |
| Probe Cable Length | 0.5 m (20 in) |
| Standoff Adapter | 2.0 in (51 mm) |
| Probe Penetration | 3.5 in |
| Housing Material | Aluminum Housing with 304 Stainless Steel Sleeve |
| Fittings | One 3/4-14 NPT Plug Only |
| Mounting Thread | 3/4-14 NPT |
| Application | Machinery Protection and Condition Monitoring |
| Dimensions | Approx. 245 × 78 × 78 mm |
| Weight | Approx. 2.00 kg |
Industrial Applications
The 21000-28-05-20-035-04-02 is designed for reliable installation in rotating machinery monitoring systems across numerous industries.
- Steam Turbine Monitoring
- Gas Turbine Packages
- Centrifugal Compressors
- High-Speed Pumps
- Industrial Motors
- Power Generators
- Fans and Blowers
- Petrochemical Plants
- Oil & Gas Processing Facilities
- Power Generation Stations
Technical FAQs
1. What is the primary purpose of the 21000-28-05-20-035-04-02?
It provides a secure protective housing for a 3300 XL proximity probe while maintaining precise positioning for shaft vibration and displacement monitoring.
2. Which proximity probe is compatible with this assembly?
It is configured for a 3300 XL 8 mm reverse-mount proximity probe with a 0.5 m (20 in) integral cable.
3. What is the function of the 2.0-inch standoff adapter?
The integrated standoff adapter increases installation clearance between the machine casing and the housing, making installation easier on equipment with restricted access.
4. What does the 3.5-inch probe penetration indicate?
It specifies the effective insertion depth of the probe sleeve, allowing accurate probe positioning in medium-depth bearing housings.
5. Which mounting thread is provided?
The assembly uses a 3/4-14 NPT mounting thread for secure installation on compatible machinery.
6. What materials are used in the housing assembly?
The housing features a lightweight aluminum body combined with a 304 stainless-steel sleeve, providing excellent strength and corrosion resistance.
7. Is this housing suitable for harsh industrial environments?
Yes. It is designed to perform reliably in environments exposed to vibration, oil, moisture, dust, and temperature variations.
8. Which industries commonly use this housing assembly?
It is widely applied in oil & gas, petrochemical, power generation, mining, marine, pulp & paper, and other industries operating critical rotating equipment.
9. What are the dimensions and weight?
The housing assembly measures approximately 245 × 78 × 78 mm and has an approximate shipping weight of 2.00 kg, allowing straightforward installation in standard machinery monitoring applications.
10. Why choose the 21000-28-05-20-035-04-02?
Its durable construction, integrated 2-inch standoff, dependable environmental protection, and compatibility with the proven 3300 XL platform make it a reliable solution for extending equipment life and improving maintenance efficiency.
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