Technical Specifications Breakdown
Key parameters for the 21000-34-10-00-028-04-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Model | 21000 - Proximity Probe Housing Assemblies |
| Probe Option | 34 = 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals |
| Probe Cable Length | 1.0 m (39 in) |
| Probe Penetration | 028 = 2.8 in |
| Fitting Option | 04 = One 3/4-14 NPT plug only |
| Mounting Thread | 3/4-14 NPT |
| Material | Aluminum body with 304 stainless steel sleeve |
| Weight | 1.1 kg (2.4 lb) typical, without fittings |
Industry Applications for the 21000 Housing
The 2.8-inch probe penetration accommodates standard bearing housing wall thicknesses, while the 3/4-14 NPT fitting and mounting thread ensure secure, leak-proof installation. The aluminum body with 304 stainless steel sleeve resists corrosion in refinery and chemical plant environments.

Installation & Setup Guidance
Mount the housing using the 3/4-14 NPT thread, ensuring the probe tip is positioned at the correct gap per the probe manufacturer's specifications. The 1.0 m cable length allows flexible routing to junction boxes. If hazardous area approval is required, select the appropriate probe option with connector protector. Always verify that the housing is properly grounded and that conduit connections are sealed.
Maintenance & Reliability
Periodically inspect the housing for signs of corrosion or mechanical damage, especially the O-rings and thread seal. Ensure the dome cover is tight and the conduit ports are sealed against moisture ingress. The 304 stainless steel sleeve provides long-term durability in wet or corrosive atmospheres. No internal adjustments are required.
Robust Protection for Critical Vibration Monitoring
When machinery health monitoring demands reliable proximity probe installations in harsh environments, the Bently Nevada 21000-34-10-00-028-04-02 provides a field-proven solution. This 21000 series housing assembly is engineered to secure and protect a 3300 XL 8 mm probe with connector protector, ensuring accurate vibration and position measurements in rotating equipment.

Compatibility & Integration
This housing is designed for use with Bently Nevada 3300 XL 8 mm proximity probes. It is fully compliant with API 670 Standard for externally mounted proximity probe housings. The assembly is certified as CSA Type 4 enclosure and is available with CSA explosion-proof ratings for hazardous areas when ordered with appropriate options.
Selection Guide & Purchasing Advice
When selecting a housing, verify the probe cable length, penetration depth, and fitting options match your installation. The 21000-34-10-00-028-04-02 is available new and in original factory packaging from AutoDCSTech. Our team can help confirm compatibility with your existing Bently Nevada monitoring systems. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 21000-34-10-00-028-04-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
