{"product_id":"21000-28-05-00-057-04-02-bently-nevada-21000-series-proximity-probe-housing","title":"21000-28-05-00-057-04-02 Bently Nevada 21000 Series Proximity Probe Housing","description":"\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 21000-28-05-00-057-04-02\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e21000\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProximity Probe Housing, operates as a dedicated hardware component for the stable mechanical positioning and environmental containment of eddy-current transducers within machine casing interfaces.\u003c\/p\u003e\n\u003ch3\u003eConfiguration Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe 21000-28-05-00-057-04-02 configuration specifies a 1\/2-20 UNF threaded housing assembly, incorporating a 0.5-inch NPT mounting adapter and a 57 mm (2.25 inch) length. This housing assembly is engineered to facilitate axial adjustment of the transducer tip relative to the target, ensuring the required gap for linear operation in vibration and position monitoring applications.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\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\u003e21000-28-05-00-057-04-02\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\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\u003e0.65 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\u003e18 cm x 12 cm x 8 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temp\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-35 deg C to +177 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eStainless Steel\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProbe Compatibility\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8 mm \/ 5 mm Probes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eThread Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1\/2-20 UNF (Internal)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eMechanical Positioning \u0026amp; Transducer Scaling\u003c\/h3\u003e\n\u003cp\u003eThe 21000 series housing maintains consistent rotor dynamics observation by providing a rigid reference point. Because accurate eddy-current probe scaling requires the probe tip to remain at a fixed distance from the target, this housing features a locking nut mechanism that prevents drift once the nominal -10 VDC gap voltage is set. Proper installation involves aligning the housing so that the probe trajectory is perfectly perpendicular to the target surface, effectively mitigating potential non-linearities and signal distortions during shaft rotation.\u003c\/p\u003e\n\u003ch3\u003eShipment Contents\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e1x 21000-28-05-00-057-04-02 Housing Assembly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1x Jam nut\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1x O-ring seal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1x Installation instruction manual\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eMachining Requirements: The mounting boss must be machined flat and tapped to ensure the housing stands square to the shaft to prevent angular alignment errors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThread Engagement: Utilize appropriate thread sealant on the NPT end if the application involves pressurized casing environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLocking Protocol: Once the target gap is established, tighten the jam nut to 5.1 N-m (45 in-lb) to secure the assembly against vibration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnvironmental Protection: Ensure the O-ring is seated correctly within the groove to maintain a hermetic seal against oil or gas ingress.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eDoes this housing include the probe? No, the 21000 series is a mechanical housing assembly; the proximity probe and extension cable must be sourced separately.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the purpose of the 57 mm length? This specific length is intended for applications where the machine wall thickness requires a longer reach to position the probe tip correctly over the shaft.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan this be used for 3300 XL probes? Yes, the housing is dimensionally compatible with standard 8 mm and 5 mm 3300 XL series probes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs the stainless steel material compatible with all lubricants? Stainless steel offers high resistance to standard industrial lubricants; however, check for chemical compatibility if process fluids are highly acidic.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhy is the jam nut critical? The jam nut prevents the housing from backing out due to machine-induced vibration, which would result in a loss of gap calibration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan I replace the O-ring in the field? Yes, O-rings are standard consumable items and should be inspected for degradation during routine maintenance cycles.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs this housing suitable for hazardous areas? The mechanical housing is passive; when paired with an approved probe and barrier, it is compatible with Ex i installations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat happens if the thread is cross-threaded? Cross-threading damages the machine boss; always thread by hand initially to ensure proper seating before using tools.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45518837088429,"sku":"21000-28-05-00-057-04-02","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/bently-nevada-21000-28-05-00-057-04-02-proximity-probe-housingassemblies-zpr1npx1f3l.jpg?v=1766980075","url":"https:\/\/www.maxwellplc.com\/products\/21000-28-05-00-057-04-02-bently-nevada-21000-series-proximity-probe-housing","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}