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- Bently Nevada
- 21000, 24701, and 164818 ProbeHousing Assemblies
- 21000-28-05-40-026-04-02
In Stock
Ships by Wednesday, July 8
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We provide 1 year warranty for all remaining parts.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online.
If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.
Amikon offers a wide range of components, products and services related to industrial automation. We have a large surplus of stocks and are also distributors of new products from a variety of quality manufacturers.
Technical specifications for 21000-28-05-40-026-04-02
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Product Model21000-28-05-40-026-04-02
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Product ParametersProximity Probe HousingAssemblies
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Tariff Code8537101190
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Country of originUSA
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Place of shipmentXiamen, China
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In stock1 unit
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Estimated Shipping Size30.5x8.5x8.5cm
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ManufacturerBently Nevada
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Weight1.05 kg
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Probe with Connector3300 XL 8mm probe, selectablehazardous area approvals
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Probe Cable Length0.5 m (20 in)
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Standoff Adapter4.0 in (101.6 mm)
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Probe Penetration2.6 in (66.04 mm)
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FittingsOne 3/4-14 NPT plug only
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Mounting Thread3/4-14 NPT
Description
The 21000-28-05-40-026-04-02 is an aluminum probe housing assembly from the Bently Nevada 21000 series, manufactured by Bently Nevada (Baker Hughes). It is configured with a 3300 XL 8 mm probe with connector and multiple hazardous area approvals, 0.5 meter probe cable, 4.0 inch standoff adapter, 2.6 inch probe penetration, one 3/4-14 NPT plug, and 3/4-14 NPT mounting thread.
The assembly consists of an aluminum housing body with a 304 stainless steel probe sleeve. The 4.0 inch standoff adapter provides mounting clearance from the machine case surface, while the 2.6 inch probe penetration positions the probe tip at the required distance from the target surface. The total sleeve extension from the mounting surface is 6.6 inches (167.6 mm), which is within the self-supporting range and does not require additional sleeve support.
The housing includes a dome cover that screws into the housing body, threaded ports for conduit connections, O-ring seals, a thread seal, and a single 3/4-14 NPT plug fitting. The 3/4-14 NPT mounting thread is machined with approximately 5–7 full threads to increase mounting strength and mechanical stability.
The assembly consists of an aluminum housing body with a 304 stainless steel probe sleeve. The 4.0 inch standoff adapter provides mounting clearance from the machine case surface, while the 2.6 inch probe penetration positions the probe tip at the required distance from the target surface. The total sleeve extension from the mounting surface is 6.6 inches (167.6 mm), which is within the self-supporting range and does not require additional sleeve support.
The housing includes a dome cover that screws into the housing body, threaded ports for conduit connections, O-ring seals, a thread seal, and a single 3/4-14 NPT plug fitting. The 3/4-14 NPT mounting thread is machined with approximately 5–7 full threads to increase mounting strength and mechanical stability.
Alternative Names
21000-28-05-40-026-04-O2
21000-28-05-40-026-O4-02
21000-28-05-40-O26-04-02
21000-28-05-4O-026-04-02
21000-28-O5-40-026-04-02
2I000-28-05-40-026-04-02
21000 28 05 40 026 04 02
21000 28 05 40 026 04 O2
21000 28 05 40 026 O4 02
21000 28 05 40 O26 04 02
21000 28 05 4O 026 04 02
21000 28 O5 40 026 04 02
2I000 28 05 40 026 04 02
21000-28-05-40-026-04-01
21000-28-05-40-026-04-04
21000-28-05-40-026-04-CN
Information
Overview
Manuals
Application Notes
Product Applications
Probe Gap Adjustment
Features:
- Proximity probe housing assembly for 3300 XL 8 mm system
- External mounting design for rotating machinery
- 3/4-14 NPT threaded installation interface
- Aluminum housing with stainless steel protective sleeve
The housing assembly allows the probe to be installed externally while maintaining a controlled and stable air gap between the probe tip and the rotating shaft. This ensures accurate measurement of shaft vibration, radial displacement, and position without requiring direct internal access to the machine casing.
The 21000 series housing incorporates a robust aluminum enclosure with a stainless-steel protective sleeve to withstand harsh industrial conditions. The design includes multiple sealing stages to prevent ingress of oil, dust, and moisture, making it suitable for continuous operation in turbine, compressor, and pump environments.
The 21000-28-05-40-026-04-02 Bently Nevada Proximity Probe HousingAssemblies may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 21000-28-05-40-026-04-02 Proximity Probe HousingAssemblies Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The 3300 XL 8 mm probe is installed in the sleeve in reverse mount configuration, with the 0.5 meter probe cable routed through the housing and terminated at the connector. The probe is certified for multiple hazardous area approvals including CSA explosion-proof for Class I Division 1 & 2 Groups C, D and Class II Division 1 & 2 Groups E, F, G.
The housing is rated as a CSA Type 4 enclosure, providing protection against dust and water ingress. It complies with the American Petroleum Institute (API) 670 Standard for externally mounted proximity probe housings.
The adjustment range for probe penetration is ±13 mm (±0.5 in), allowing field adjustment of the probe-to-target gap without disassembling the machine. The assembly allows external access to the proximity probe and its extension cable, enabling gap adjustment or probe replacement without disassembling the machine.
- Power Generation: Deployed in thermal/nuclear/combined-cycle stations to safeguard generator sets
- Oil & Gas: Implemented across upstream/downstream machinery to mitigate catastrophe risks
- Petrochemical Refining: Protects continuous-duty process compressors from severe structural cross-contact
- Steam Turbines: Tracks differential growth between fast-heating rotor and slower-expanding stator casing
- Gas Compressors: Monitors axial changes and heavy shaft displacements in industrial compressors
- Fluid-Film Bearings: Provides long-range non-contact positioning for massive rotating assemblies
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Unscrew the dome cover from the top of the housing body to access the rear of the reverse-mount probe.Loosen the sleeve locknut inside the assembly to allow the probe sleeve to rotate.Thread the probe in or out to adjust its gap relative to the target shaft.Connect a digital multimeter to the Proximitor Sensor to monitor the DC Gap Voltage. Rotate the sleeve until the sensor registers the standard installation voltage (typically -10.0 VDC for a normal 80 mil / 2.0 mm gap)
Technical notes
The 3300 XL 8 mm probe is installed in the sleeve in reverse mount configuration, with the 0.5 meter probe cable routed through the housing and terminated at the connector. The probe is certified for multiple hazardous area approvals including CSA explosion-proof for Class I Division 1 & 2 Groups C, D and Class II Division 1 & 2 Groups E, F, G.
FAQs
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What is the 21000-28-05-40-026-04-02?
+The Bently Nevada 21000 is an aluminum proximity probe housing assembly designed to safely mount and protect vibration sensors on industrial rotating machinery -
What is the purpose of the 21000 series housing?
+It provides a secure, weatherproof, and explosion-proof external enclosure to mount proximity probes. It protects the probe cable and connections from harsh industrial environments, extreme temperatures, and hazardous gases. -
What are the environmental and hazardous area ratings?
+The housing features a CSA Type 4 enclosure rating, making it splash-proof and dust-tight for outdoor use. The "-04" fitting paired with the standard housing offers explosion-proof protection in Class I, Divisions 1 and 2 environments -
What temperature range can this unit tolerate?
+The physical housing assembly reliably operates in extreme climates ranging from -50°C to +80°C.
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32D UNITS,GUOMAO BUILDING,NO 388 HUBIN SOUTH ROAD,SIMING DISTRICT,XIAMEN