{"product_id":"21000-33-05-00-035-03-02-bently-nevada-21000-series-proximity-probe-housing","title":"21000-33-05-00-035-03-02 Bently Nevada 21000 Series Proximity Probe Housing","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 21000-33-05-00-035-03-02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erepresents a critical mechanical interface component within the broader suite of Turbine Supervisory Instrumentation (TSI). As a high-precision proximity probe housing assembly, it serves as the physical conduit and protective environment for eddy-current transducers monitoring rotor dynamics. Engineered for industrial turbomachinery, this assembly ensures the rigid positioning of the probe relative to the machine shaft, a necessity for maintaining accurate vibration and displacement data. By decoupling the transducer from structural machine noise, the housing assembly stabilizes the critical gap distance, which is fundamental to the linear operation of the proximity sensing system.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e21000-33-05-00-035-03-02\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBently Nevada\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProduct Series\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e21000 Series\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOrigin\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUSA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.98 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eShipping Dimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e42.0 * 12.0 * 12.0 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHousing Material\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e303\/304 Stainless Steel\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProbe Diameter Compatibility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e11 mm (Suffix 33)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMounting Thread\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3\/4-14 NPT\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-51 deg C to +177 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eConduit Connection\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1\/2-14 NPT (Suffix 03)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHousing Length\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e350 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eModel Configuration Explanation\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e21000-33-05-00-035-03-02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emodel number is structured to communicate specific mechanical dimensions and interface requirements:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e21000\u003c\/strong\u003e: The core series identifier for Bently Nevada probe housings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e33\u003c\/strong\u003e: Specifies the probe diameter compatibility (11 mm probe series).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e05\u003c\/strong\u003e: Mounting thread specification (standard 3\/4-14 NPT).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e00\u003c\/strong\u003e: Extension piece configuration (no intermediate extension required).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e035\u003c\/strong\u003e: Overall housing length of 350 mm, providing the necessary reach for deep-set machine ports.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e03\u003c\/strong\u003e: Conduit fitting type, designed for standard industrial conduit interfaces.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e02\u003c\/strong\u003e: Material and protective coating option, ensuring chemical and thermal resistance in aggressive lubrication environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cp\u003eThe 21000-33-05-00-035-03-02 assembly is deployed in environments where precise non-contact displacement measurement is paramount:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSteam and Gas Turbines:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMonitoring radial vibration at bearing locations to prevent catastrophic mechanical failure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCentrifugal Compressors:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProviding shaft centerline position data to ensure alignment within bearing clearances.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHydroelectric Generators:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUtilizing the deep-reach 350 mm profile to clear turbine casing thickness.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCritical Balance of Plant Equipment:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhere environmental sealing of the transducer cable is required to protect against oil mist and moisture ingress.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSystem Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis housing is explicitly designed to support Bently Nevada’s 11 mm proximity probe family. It ensures full mechanical compatibility with 3300 XL and legacy 11 mm probe systems. While the housing is passive, its structural integrity is vital for the Proximitor sensor to receive an interference-free signal. Users should ensure that the probe internal threads align with the specific 11 mm probe tip geometry to avoid mechanical binding during the gap-setting phase.\u003c\/p\u003e\n\u003ch2\u003eInstallation Guidelines\u003c\/h2\u003e\n\u003cp\u003eProper mounting of the 21000-33-05-00-035-03-02 is essential for signal integrity:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eEnsure all threads are clean and free of metal shavings before installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUse a high-quality thread sealant compatible with the operating temperature of the machine casing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThread the assembly into the machine port until the desired depth is reached, ensuring the housing remains perpendicular to the shaft centerline.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSecure the housing using the supplied jam nuts to prevent vibration-induced migration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRoute the probe cable through the conduit fitting, ensuring a minimum bend radius is maintained to protect the coaxial cable’s internal dielectric.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVerify electrical ground continuity between the housing assembly and the machine chassis to maintain effective EMI\/RFI shielding.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Advantages\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePrecision Geometry:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMinimizes mechanical resonance, providing a cleaner vibration signature for diagnostic systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial Resilience:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eStainless steel construction resists oxidation, making it ideal for continuous service in high-heat lubrication zones.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStandardized Interface:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSimplifies spare parts management by adhering to industry-standard NPT mounting dimensions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnvironmental Sealing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDesigned to prevent oil migration, protecting the internal cable pathways from contamination.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eOrdering Information\u003c\/h2\u003e\n\u003cp\u003eThe 21000-3305-00-035-03-02 package typically includes:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eOne (1) 350 mm stainless steel housing body.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFactory-installed jam nuts and mounting hardware.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eO-ring seal kit for pressure-tight applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInstallation technical manual.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNote: Confirm site requirements for conduit compatibility before selecting the specific housing length.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eCan this housing be used with 8 mm probes?\u003c\/p\u003e\n\u003cp\u003eNo. This housing is specifically machined for the 11 mm (Suffix 33) probe diameter. Using an 8 mm probe will result in a loose fit and incorrect gap measurements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the length (350 mm) include the conduit fitting?\u003c\/p\u003e\n\u003cp\u003eThe 350 mm designation refers to the total length of the housing assembly from the mounting flange to the conduit interface, providing the reach needed for thick machine walls.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat sealant should be used for high-temperature applications?\u003c\/p\u003e\n\u003cp\u003eAlways use a thread sealant rated for at least 177 deg C, such as a high-grade PTFE paste or tape suitable for turbine oil environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs the 21000 series housing pressure-rated?\u003c\/p\u003e\n\u003cp\u003eYes, when installed with appropriate thread sealants, this assembly is designed to maintain a seal against the internal pressures found in standard bearing housings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow do I prevent mechanical resonance?\u003c\/p\u003e\n\u003cp\u003eEnsure the housing is threaded deeply into the machine port to minimize the exposed lever arm. A \"bottomed-out\" or rigidly locked installation reduces vibration-induced noise.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat material is the housing made of?\u003c\/p\u003e\n\u003cp\u003eThe 21000-33-05-00-035-03-02 is constructed from high-grade stainless steel to ensure longevity in chemically aggressive and hot environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan I replace the conduit fitting if it breaks?\u003c\/p\u003e\n\u003cp\u003eThe conduit fitting is integrated into the 21000 housing assembly design. If the fitting is damaged, the entire housing assembly should be replaced to ensure seal integrity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow does this housing protect the probe cable?\u003c\/p\u003e\n\u003cp\u003eThe housing assembly allows for the attachment of rigid or flexible conduit, which shields the sensitive coaxial cable from physical impact, abrasion, and oil mist.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45518839840941,"sku":"21000-33-05-00-035-03-02","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/bently-nevada-21000-33-05-00-035-03-02-proximity-probe-housingassemblies-cvg55uoiuhv.jpg?v=1766980183","url":"https:\/\/www.maxwellplc.com\/products\/21000-33-05-00-035-03-02-bently-nevada-21000-series-proximity-probe-housing","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}