Dual Axial Probe Housing for Reliable Thrust Monitoring
The Bently Nevada 21022-12-10-022-01 Dual Axial Probe Housing Assembly is engineered for precise axial thrust position measurement in rotating machinery. This externally mounted enclosure protects two proximity probes while allowing adjustments from outside the machine. It meets the American Petroleum Institute’s API 670 Standard for axial thrust position transducer housings, ensuring compliance in critical applications.
Technical Specifications Breakdown
Key parameters for the 21022-12-10-022-01 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Product Type | Dual Axial Probe Housing Assembly |
| Probe Option | 12 = 3300 XL 8 mm probe |
| Probe Cable Length | 10 = 1.0 metre (39 in) |
| Probe Penetration | 022 = 2.2 in |
| Fittings Option | 01 = One 3/4-14 NPT fitting; three 3/4-14 NPT plugs |
| Housing Material | Aluminum alloy (sand cast, 0.3% copper free) |
| Sleeve Material | 304 stainless steel |
| Weight | 3.6 kg (8 lb) |
Industry Applications for Axial Thrust Monitoring
By housing two 3300 XL 8 mm probes, it provides redundancy and meets API 670 requirements. The external mounting design simplifies gap adjustments without machine disassembly, reducing downtime.
Installation and Setup Guidance
Mount the enclosure on the machine case using four standard machine screws. The probes are installed through two 3/4-in NPT threaded holes using the provided sleeve/adapter assemblies. Note that fittings are supplied as a kit and are not pre-installed. After mounting, set probe gaps through the removable cover. Ensure the probe cable length of 1.0 metre is sufficient for your routing path.
Maintenance and Reliability
The aluminum alloy housing with 304 stainless steel sleeves resists corrosion in industrial environments. Periodically inspect the enclosure for physical damage and verify that the cover seal remains intact to protect probes from dust and splashing liquids. No internal disassembly is required for routine checks.
Selection Guide and Purchasing Advice
When selecting a dual axial probe housing, confirm that the probe penetration (2.2 in) matches your machine’s thrust position measurement range. The 21022-12-10-022-01 is designed for use with 3300 XL 8 mm probes. For lifecycle status and availability, please verify with AutoDCSTech before ordering.
Troubleshooting and Common Issues
If readings become erratic, first inspect the probe tip and target area for contamination or mechanical interference. Check the cable connections for damage or looseness. Ensure the enclosure is properly grounded to avoid electrical noise. For persistent issues, consult the Bently Nevada installation manual.


Availability & Condition at AutoDCSTech
| Part Number | 21022-12-10-022-01 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
