For industrial machinery protection architectures requiring external transducer mounting and micro-adjustable insertion depths, the Bently Nevada 21000-28-05-00-071-03-02 provides a ruggedized, field-proven enclosure engineered to protect critical proximity sensors. This housing assembly is configured to host a 3300 XL 8 mm proximity probe, shielding the sensor from physical impacts, environmental contaminants, and hazardous area conditions. Constructed with a heavy-duty machined aluminum body and a corrosion-resistant 304 stainless steel sleeve, it ensures high mechanical integrity on high-speed rotating assets such as steam turbines, centrifugal compressors, and large industrial pumps.
This model facilitates on-site probe gapping and maintenance without requiring the de-coupling or disassembly of the main machine casing. With a 7.1-inch probe penetration depth and a 3/4-14 NPT mounting thread connection, it allows for direct and precise positioning relative to the target shaft.
| Parameter | Specification Values |
|---|---|
| Manufacturer | Bently Nevada |
| Model Part Number | 21000-28-05-00-071-03-02 |
| Compatible Probe Type | 3300 XL 8 mm Proximity Probe (Option 28) |
| Probe Cable Length | 0.5 meter (20 inches) (Option 05) |
| Standoff Adapter Option | No standoff adapter (Option 00) |
| Probe Penetration Depth | 7.1 inches (approx. 180.3 mm) (Option 071) |
| Mounting Thread Option | 3/4-14 NPT (Option 02) |
| Included Fittings | One 3/4-14 NPT plug; one 3/4-14 to 1/2-14 NPT reducer; one cable seal grip (with grommets for 1/8 to 3/16, 1/4 to 5/16, and 5/16 to 3/8 inch cables) |
| Housing Cover Material | Machined Aluminum |
| Sleeve Material | 304 Stainless Steel |
| Approvals | Multiple hazardous area certifications (when paired with compliant 3300 XL components) |
| Shipping Weight | 2.0 kg (approx. 4.4 lbs) |
This unit has been legacy-replaced in newer OEM architectures by model code 21000-16-05-00-071-03-02. When planning a modern field upgrade or replacement, verify if your vibration monitoring system uses standard 3300 XL 8 mm probes (Option 28) or the newer 11 mm setups (Option 16), as changing the sensor model dictates a matching proximitor calibration sweep adjustment.
In high-temperature turbine casings, thermal expansion rates differ significantly between the aluminum housing body and the 304 stainless steel sleeve. Ensure that clearance fits around the sleeve account for thermal elongation during startup phases to prevent mechanical binding or sensor drift.
Always apply a high-quality thread sealant or anti-seize paste directly to the 3/4-14 NPT mounting threads to prevent galvanic lock-up over long deployment intervals. To maintain IP integrity, select the exact match grommet size from the included Option 03 pack to ensure the cable seal grip achieves a completely hermetic fit around the probe extension lead.
Prior to housing installation or depth calibration adjustments, completely de-energize the monitored machinery and verify that no shaft rotation or high-pressure gas bypass conditions exist. Standard safety lock-out/tag-out (LOTO) protocols must be actively enforced during proximity system mounting.
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Manufacturer: Bently Nevada
Product No.: 21000-28-05-00-071-03-02
Country of origin:United States
Product Type: Proximity Probe Housing Assemblies
Payment: T/T, Western Union
Weight: 320g
Shipping port: Xiamen
Warranty: 12 months
For industrial machinery protection architectures requiring external transducer mounting and micro-adjustable insertion depths, the Bently Nevada 21000-28-05-00-071-03-02 provides a ruggedized, field-proven enclosure engineered to protect critical proximity sensors. This housing assembly is configured to host a 3300 XL 8 mm proximity probe, shielding the sensor from physical impacts, environmental contaminants, and hazardous area conditions. Constructed with a heavy-duty machined aluminum body and a corrosion-resistant 304 stainless steel sleeve, it ensures high mechanical integrity on high-speed rotating assets such as steam turbines, centrifugal compressors, and large industrial pumps.
This model facilitates on-site probe gapping and maintenance without requiring the de-coupling or disassembly of the main machine casing. With a 7.1-inch probe penetration depth and a 3/4-14 NPT mounting thread connection, it allows for direct and precise positioning relative to the target shaft.
| Parameter | Specification Values |
|---|---|
| Manufacturer | Bently Nevada |
| Model Part Number | 21000-28-05-00-071-03-02 |
| Compatible Probe Type | 3300 XL 8 mm Proximity Probe (Option 28) |
| Probe Cable Length | 0.5 meter (20 inches) (Option 05) |
| Standoff Adapter Option | No standoff adapter (Option 00) |
| Probe Penetration Depth | 7.1 inches (approx. 180.3 mm) (Option 071) |
| Mounting Thread Option | 3/4-14 NPT (Option 02) |
| Included Fittings | One 3/4-14 NPT plug; one 3/4-14 to 1/2-14 NPT reducer; one cable seal grip (with grommets for 1/8 to 3/16, 1/4 to 5/16, and 5/16 to 3/8 inch cables) |
| Housing Cover Material | Machined Aluminum |
| Sleeve Material | 304 Stainless Steel |
| Approvals | Multiple hazardous area certifications (when paired with compliant 3300 XL components) |
| Shipping Weight | 2.0 kg (approx. 4.4 lbs) |
This unit has been legacy-replaced in newer OEM architectures by model code 21000-16-05-00-071-03-02. When planning a modern field upgrade or replacement, verify if your vibration monitoring system uses standard 3300 XL 8 mm probes (Option 28) or the newer 11 mm setups (Option 16), as changing the sensor model dictates a matching proximitor calibration sweep adjustment.
In high-temperature turbine casings, thermal expansion rates differ significantly between the aluminum housing body and the 304 stainless steel sleeve. Ensure that clearance fits around the sleeve account for thermal elongation during startup phases to prevent mechanical binding or sensor drift.
Always apply a high-quality thread sealant or anti-seize paste directly to the 3/4-14 NPT mounting threads to prevent galvanic lock-up over long deployment intervals. To maintain IP integrity, select the exact match grommet size from the included Option 03 pack to ensure the cable seal grip achieves a completely hermetic fit around the probe extension lead.
Prior to housing installation or depth calibration adjustments, completely de-energize the monitored machinery and verify that no shaft rotation or high-pressure gas bypass conditions exist. Standard safety lock-out/tag-out (LOTO) protocols must be actively enforced during proximity system mounting.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
United States
|
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