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The 21000-34-05-00-056-04-02 is a 21000 series aluminum proximity probe housing assembly complying with API 670 standards and CSA Type 4 certification. Its hardware components include a built-in 3300 XL 8 mm proximity probe, a 0.5-meter cable, a 304 stainless steel sleeve with a 5.6-inch penetration depth, and one 3/4-14 NPT metal plug, utilizing a 3/4-14 NPT base mounting thread.
A reverse mount proximity probe
A probe sleeve of optional length
A dome cover that screws into the body of the housing
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. You can order hazardous area approved proximity probes with 21000 aluminum and 24701 stainless steel housings for intrinsically safe applications. Both housings are certified as CSA Type 4 enclosures and are fully compliant with the American Petroleum Institute's (API) 670 Standard for externally mounted proximity probe housings.
Bently Nevada 21000-34-05-00-056-04-02 serves as the external mechanical protective barrier for the core sensor, with its deployment logic based on screwing directly into and fixing onto the external bearing housing or metal machine casing via the 3/4-14 NPT base mounting thread. The externally exposed body of the assembly features a die-cast aluminum alloy housing to withstand interference from field water spray, industrial dust accumulation, and stray electromagnetic noise in the surrounding environment.
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.
Oil and Gas Refining
Installed on the bearing housings of large centrifugal and rich gas compressors in refinery fluid catalytic cracking units to monitor shaft radial vibration and axial displacement online.
Thermal Power Plants
Deployed on the high-temperature bearing pedestals of main steam turbine generator sets, large boiler feed pumps, and induced draft fans to collect non-contact shaft mechanical vibration signals in real time.
Hydroelectric Power Plants
Used for vertical or horizontal bearing shaft monitoring of hydro-generator units, protecting probe cable connectors from moisture ingress in extremely damp turbine pit environments.
Oil and Gas Pipelines
Installed on the rotors of main steam turbines, main feed pumps, and condensate pumps in conventional islands, working with Proximitors to convert mechanical displacement into standard voltage signals.
Ironmaking and Metallurgical Blast Furnaces
Deployed on blast furnace top gas energy recovery turbine (TRT) power generation units and blast furnace blower sets to withstand severe environmental mechanical vibration and dust accumulation in metallurgical workshops.
Mining and Mineral Processing
Used for shaft bearing monitoring of large ball mill and semi-autogenous (SAG) mill main gearboxes and high-power exhaust fans, preventing heavy mine dust and slurry from entering the probe.
When using the 21000-34-05-00-056-04-02, you must ensure that its 5.6-inch stainless steel sleeve penetration depth matches the actual borehole dimensions inside the mechanical bearing housing and the probe zero-position gap to prevent physical collision between the probe tip and the rotating shaft during startup.
Meanwhile, during field wiring and long-term operation, the physical sealing integrity of the 3/4-14 NPT threaded metal plug and the housing O-rings must be maintained to prevent moisture or industrial lubricating oil from infiltrating the housing cavity and damaging the internal coaxial cable and connector protector.
Bently Nevada 21000-34-05-00-056-04-02 uses the 04 fitting option, meaning the conduit outlet of the aluminum housing body is equipped with only one 3/4-14 NPT threaded metal plug, without extended accessories such as flexible conduits or reducers, making it suitable for direct connection to existing rigid galvanized steel conduit loops on site.
-34 means it includes a 3300 XL 8 mm proximity probe with a connector protector.
What is the probe cable length of 21000-34-05-00-056-04-02?
-05 represents a probe cable length of 0.5 meters.
Does 21000-34-05-00-056-04-02 have a standoff adapter?
-00 indicates no standoff adapter is provided in this hardware configuration.
How many parts do you have in stock?
We have an extensive stock base consisting of ten thousands of new and discontinued automation parts including those from leading manufacturers such as:Control Systems (DCS, PLC, CNC) ,Panel Controllers,HMI and Display Panels,Drives,Encoders and Resolvers,Power Supplies.
Do you offer global delivery services?
yes. We ship globally, and we are able to quickly deliver parts globally to any corner of the world. Unless otherwise specified, we will ship your order via (DHL). We can also ship through FedEx, UPS, and TNT. We can also use your account.
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Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
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