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Proximity Probe Housing Assemblies
No standoff adapter configured
Comprises one 3/4-14 NPT plug
one 3/4-14 to 1/2-14 NPT reducer
and one cable sealing grip kit for
multiple cable diameters
ranging from 1/8 to 3/8 inches
Technical specifications for 21000-16-10-00-077-03-02
Technical specifications for 21000-16-10-00-077-03-02
Manufacturer:
Bently Nevada
Product Category:
Machinery Monitoring System
Spare Part Number:
21000-16-10-00-077-03-02
Estimated shipping dimensions:
60x8.5x8.5cm
Weight:
1.44 kg
Tariff Code:
8537101190
Counliy of origin:
USA
Probe with Connector:
3300 XL 8mm probe
Probe Cable Length:
1.0 m (39 in)
Standoff Adapter:
No standoff adapter
Probe Penetration:
7.7in（196mm）
Fittings:
One 3/4-14 NPT plug One 3/4-14 to 1/2-14 NPT reducer One cable seal grip with grommets for the following cable sizes: • 1/8 to 3/16 inches • 1/4 to 5/16 inches • 5/16 to 3/8 inches
The 21000-16-10-00-077-03-02 is an explosion-proof proximity probe housing assembly. Constructed from aluminum with a 304 stainless steel sleeve, this assembly allows external access to proximity probes for gap adjustment or replacement without disassembling the machine.
A probe sleeve of optional length
A reverse mount proximity probe
Threaded ports for conduit connections
The 21000, 24701, and 164818 Proximity Probe Housing Assemblies are available with Canadian Standards Association (CSA) approvals. They are rated explosion proof for hazardous areas. The 21000-16-10-00-077-03-02 is a fully configured variant within this premium industrial protective lineup. This specific configuration incorporates a 3300 XL 11mm proximity probe equipped with a 1.0-meter physical cable to deliver precise displacement data. Featuring a probe penetration length of 7.7 inches, the heavy-duty 304 stainless steel protective sleeve extends into the machine casing to hold the probe sensor tip firmly in place. The main enclosure consists of an anodized aluminum dome cover that achieves a CSA Type 4 weather-sealed rating to fully isolate internal components from moisture, oil, and dust. For field wire routing, the assembly comes equipped with one explosion-proof conduit fitting and uses a standard 3/4-14 NPT threaded base to lock directly onto the external port of a bearing housing. This reverse-mount configuration enables technicians to pull out the internal sensor sleeve for gap verification or maintenance tasks while the industrial machinery remains in full operation.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Petroleum Refining Industry
It mounts onto the bearing housings of large rich-gas compressors and main air blowers within catalytic cracking units to shield the internal 11mm proximity probe and continuously monitor rotor radial vibration under all-weather outdoor environments.
Oil and Gas
It deploys on massive centrifugal gas compressors at natural gas booster stations using its 7.7-inch penetration length to secure the probe at critical points for uninterrupted axial displacement measurements of high-power gas turbine drive shafts.
Thermal Power
It applies to the high-pressure and low-pressure cylinder bearing pedestals of 300MW and above supercritical steam turbine generator sets using the explosion-proof conduit fitting to safely route signal cables and capture rotor differential expansion and oil film oscillation data in real time.
Nuclear Power
It mounts onto the exterior of bearing housings for conventional island main feedwater pumps and turbo-generator sets relying on the rugged CSA Type 4 rating to block high-temperature steam and condensate ingress for high-precision collection of shaft keyphasor and speed signals.
Hydroelectric Power
It applies to water guide, upper guide, and lower guide bearings of large Francis or Kaplan hydro-generator units using the 3/4-14 NPT large threaded base to block internal lubricating oil leaks under high hydraulic head pressures.
When using the Bently Nevada 21000 probe housing assembly, key priorities must be placed on preventing cable twisting, ensuring explosion-proof sealing, and fine-tuning the probe gap. When tightening the housing dome cover, internal extension cables must be carefully managed to avoid over-twisting or breaking the signal lines. Simultaneously, ensure all O-rings, thread seals, and certified conduits at the sleeve and entry ports are properly installed to strictly block process oil and moisture ingress, preventing eddy current signal drift and ensuring long-term stable sensor operation.
What industrial hardware exactly is the 21000-16-10-00-077-03-02?
It is an industrial-grade aluminum proximity probe housing assembly manufactured by Bently Nevada, used for securely installing vibration probes on the exterior of large rotating machinery.
How to use protective components like the 21000-16-10-00-077-03-02 on rotating machinery?
The assembly threads into the exterior of a bearing housing via its bottom port, while the internal reverse-mount probe passes into the machine through an extended sleeve, enabling external measurement and adjustment of shaft vibration or displacement without dismantling the casing.
What is the mechanical protection level of aluminum enclosures like the 21000-16-10-00-077-03-02?
The casing complies with CSA Type 4 (equivalent to IP66 rating) for fully sealed waterproof and dustproof protection, using internal O-rings to block outdoor rain, ash, or oil from penetrating and damaging the internal probe.
Which heavy machinery equipment most frequently configures the 21000-16-10-00-077-03-02 assembly?
It is widely configured on the bearing housings of refinery steam turbines, chemical plant centrifugal compressors, power plant turbo-generator sets, and massive industrial water pumps for 24-hour continuous monitoring of axial displacement and radial vibration.
What are the primary materials of the 21000-16-10-00-077-03-02 hardware assembly?
The external dome cover and main body housing of the device are made from anodized cast aluminum, while the long protective guide sleeve that extends inside the machine to hold the probe is made from 304 stainless steel.
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