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- Bently Nevada
- 21000, 24701, and 164818 ProbeHousing Assemblies
- 21000-28-05-00-105-04-02
In Stock
Ships by Tuesday, July 28
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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 21000-28-05-00-105-04-02
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Product Model21000-28-05-00-105-04-02
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Product ParametersProximity ProbeHousing Assemblies
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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 Size8.5x8.5x30.5cm
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ManufacturerBently Nevada
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Weight1.08 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 Adapter (Option C Dimension)Minimum length 1.5 in (38 mm)
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Probe Penetration (Option D Dimension)10.5 in (266.7 mm)
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FittingsOne 3/4-14 NPT plug only
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Mounting Thread3/4-14 NPT
Description
The Bently Nevada 21000-28-05-00-105-04-02 Proximity Probe Housing Assembly is an all-metal aluminum housing for externally mounting proximity probes on industrial machinery. 21000-28-05-00-105-04-02 provides a robust, environmentally sealed enclosure that protects the proximity probe and its electrical connections while allowing precise positioning of the probe tip relative to the rotating shaft or target surface for accurate vibration and position measurement.
21000-28-05-00-105-04-02 is specifically designed for use with Bently Nevada proximity transducer systems including the 3300 XL 8mm, 3300 5mm, 3300XL NSv, and 3300XL 11mm proximity probe families. 21000-28-05-00-105-04-02 houses a reverse mount proximity probe with 3/8-24 UNF threads, which is secured within the housing assembly and positioned so that the probe tip faces the target surface through the probe sleeve. The complete assembly of 21000 includes a dome cover that screws into the body of the housing, threaded ports for conduit connections, a probe sleeve of user-specified length, O-rings for sealing, a thread seal, and optional conduit fittings or standoff adapters.
21000-28-05-00-105-04-02 is specifically designed for use with Bently Nevada proximity transducer systems including the 3300 XL 8mm, 3300 5mm, 3300XL NSv, and 3300XL 11mm proximity probe families. 21000-28-05-00-105-04-02 houses a reverse mount proximity probe with 3/8-24 UNF threads, which is secured within the housing assembly and positioned so that the probe tip faces the target surface through the probe sleeve. The complete assembly of 21000 includes a dome cover that screws into the body of the housing, threaded ports for conduit connections, a probe sleeve of user-specified length, O-rings for sealing, a thread seal, and optional conduit fittings or standoff adapters.
Information
Overview
Manuals
Application Notes
Product Applications
Insertion Guidelines
Features:
- Aluminum Probe Housing Assembly for External Mounting
- CSA Explosion-Proof Certification for Hazardous Areas
- Complete Assembly with Dome Cover, Probe Sleeve, and O-Rings
- Adjustable Probe Penetration with ±13 mm Adjustment Range
The assembly consists of an aluminum body with an AISI 304 stainless steel sleeve, a dome cover that screws into the housing body, threaded ports for conduit connections, a probe sleeve of 10.5-inch length, O-rings, a reverse mount 3300 XL 8 mm proximity probe with 0.5 m (20 in) integral cable, a thread seal, and one 3/4-14 NPT plug. The total weight is approximately 1.1 kg (2.4 lb) without fittings.
The 21000-28-05-00-105-04-02 Bently Nevada Proximity Probe Housing Assemblies may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 21000-28-05-00-105-04-02 Proximity Probe Housing Assemblies 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 probe sleeve length for 21000 is determined by the installation location and the distance from the mounting surface to the target surface. The probe lead must be longer than the sleeve length to ensure adequate cable routing within the housing. For 21000-28-05-00-105-04-02 installations where the probe penetration length (C plus D) exceeds 300 mm (12 inches), additional sleeve support must be added near the probe to prevent resonance from occurring. Bently Nevada offers a probe support and oil seal (part number 37948-01) for long sleeves that must pass through an inner bearing housing. Custom sleeve lengths for 21000-28-05-00-105-04-02 are also available upon request.
The adjustment range of probe penetration option D for 21000-28-05-00-105-04-02 is 13 mm (±0.5 in), allowing installers to fine-tune the probe-to-target gap during commissioning. For probe penetration lengths between 1.0 and 2.0 inches, it may be necessary to counter bore the machine case to reduce probe side view or rear view clearance requirements. The maximum (C) plus (D) dimension for 21000 varies depending on the probe cable length, with values ranging from 5.0 inches (12.7 cm) for 12-inch cable probes to 32.9 inches (83.5 cm) for 1.0-meter cable probes.
- Oil/Gas Refineries: Protects vibration probes on compressors, pumps, and turbines from explosive gases
- Power Generation: Safeguards turbine-generator shaft sensors in nuclear, hydro, and fossil plants
- Petrochemical/Chemical: Shields proximity probes from corrosive/volatile atmospheres (Class I Div 1 & 2)
- Water/Heavy Manufacturing: Protects fluid-film bearing machines in continuous-operation facilities
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.
Machine Case Preparation: Ensure the machine casing is tapped with the required 3/4-14 NPT threads to accommodate the mount.
Sleeve Insertion: Insert the outer sleeve into the machine case. If your combined penetration length (or C+D dimension) exceeds 12 in. (305 mm), you must add a probe support sleeve near the probe to prevent destructive resonance.
Gap Adjustment: Adjust the probe's gap (typically set to 1.27 mm or 50 mils) from your target before securing.
Housing Fit: Disconnect the probe cable, fit the outer housing body over the sleeve, slide the retainer under the retaining nut, and tighten.
Alternative Names
21000-28-05-00-105-04-0Z
21000-28-05-00-105-04-O2
21000-28-05-00-105-0A-02
21000-28-05-00-105-O4-02
21000-28-05-00-1O5-04-02
21000-28-05-00-I05-04-02
21000-28-05-OO-105-04-02
21000-28-O5-00-105-04-02
21000-Z8-05-00-105-04-02
21000-2B-05-00-105-04-02
2I000-28-05-00-105-04-02
21000 28 05 00 105 04 02
21000 28 05 00 105 04 0Z
21000 28 05 00 105 04 O2
21000 28 05 00 105 O4 02
21000 28 05 00 1O5 04 02
21000 28 05 00 I05 04 02
21000 28 O5 00 105 04 02
21000 Z8 05 00 105 04 02
21000 2B 05 00 105 04 02
2I000 28 05 00 105 04 02
Technical notes
The ordering format for 21000 is 21000-AA-BB-CC-DDD-EE-FF, where AA represents the probe option, BB represents the probe cable length, CC represents the sleeve length, DDD represents the probe penetration length, EE represents the fitting option, and FF represents the mounting thread option. For example, 21000-28-05-00-105-04-02 indicates a 3300XL 8mm reverse mount probe with 5-meter cable, 0.0-inch sleeve, 10.5-inch probe penetration, M25 x 1.5 fitting, and 3/4-14 NPT mounting thread.
FAQs
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Can I use this housing in Class I hazardous locations?
+Yes. When ordered with the appropriate hazardous area approvals, the 21000 series housing holds explosion-proof ratings suitable for strict industrial environments like oil & gas and power generation facilities. -
What is the benefit of using a probe housing assembly?
+It provides mechanical protection and precise environmental sealing for vibration monitoring transducers. By keeping the probe securely mounted, it maintains the critical sensor-to-shaft gap required for accurate position and vibration tracking -
What is the 21000-28-05-00-105-04-02?
+The Bently Nevada 21000-28-05-00-105-04-02 is an explosion-proof Proximity Probe Housing Assembly. -
What is the main purpose of this housing assembly?
+It provides mechanical protection and environmental sealing for proximity sensors. It allows external gap adjustments and probe replacements while the machine is running.
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