• Please try to be as accurate as possible with your search.
  • We can quote you on 1000s of specialist parts, even if they are not listed on our website.
  • We can't find any results for “”.
    SEE MORE
      SEE PRODUCTS IN SEARCH PAGE ()
      sales1@apterpower.com
      +86 181 0690 9650
      Request a

      Fast Quote

      Manufacturers
      ALL MANUFACTURERS
      • Please try to be as accurate as possible with your search.
      • We can quote you on 1000s of specialist parts, even if they are not listed on our website.
      • We can't find any results for “”.
        Manufacturers
        sales1@apterpower.com +86 181 0690 9650
        Choose a manufacturer
        ALL MANUFACTURERS
        Bently Nevada 21508-02-12-10-02
        Bently Nevada 21508-02-12-10-02
        Bently Nevada 21508-02-12-10-02
        Bently Nevada 21508-02-12-10-02
        Bently Nevada 21508-02-12-10-02
        Bently Nevada 21508-02-12-10-02
        Ask our team:
        • Phone: +86 181 0690 9650
        • E-Mail sales1@apterpower.com

        21508-02-12-10-02

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        Bently Nevada 21508-02-12-10-02 8 mm Reverse Mount Probe is a non-contact proximity probe designed for accurate shaft displacement and vibration measurement in rotating and reciprocating machinery.
        Get a quick price for 21508-02-12-10-02
        Quantity
        *E-mail
        Company
        *Mobile
        *Content
        Upload (gif, jpg, jpeg, png, bmp, doc, docx, xls, xlsx, ppt, pdf, csv)
        Get a Quote
        Warranty Policy
        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.
        Return Notice
        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.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        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.

        Technical specifications for 21508-02-12-10-02

        • Manufacturer:
          Bently Nevada
        • Part Number:
          21508-02-12-10-02
        • Product Family:
          7200 Proximity Transducer Systems
        • Total Cable Length Option:
          1.0 metre (39 inches). Tolerance: +.25 metre, -.10 metre (+10 inches, -4 inches).
        • Connector Option:
          With miniature male coaxial connector.
        • Operating Temperature:
          -30°F to +350°F (-34°C to +177°C).
        • Relative Humidity:
          To 95%, noncondensing.
        • Corrosion Resistance (for 8 mm probesonly):
          Probe operation is not affectedby direct contact to the following: air, water, lube oil, ammonium hydroxide, sulfuric acid (10%), MEK (methylethylkeytone) or DMF (Dimethylformamide).
        • Weight:
          0.04 kg
        • Estimated shipping dimensions:
          1.8x1.8x107cm
        • Tariff Code:
          9503001000
        • Country of origin:
          USA
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Monitoring Safety & Compliance Application Scenarios

        Features:

        • Non-Contact Displacement Measurement With 80 mil (2 mm) Linear Range And 200 mV/mil Scale Factor
        • Wide Operating Temperature Capability From −34°C To +177°C For Harsh Industrial Environments
        • Durable PPS Probe Construction With Strong Chemical And Corrosion Resistance
        The Bently Nevada 21508-02-12-10-02 8 mm Reverse Mount Probe is a precision proximity probe used for non-contact measurement of shaft displacement and vibration in industrial machinery. Designed as part of a proximity transducer system, it converts the distance between the probe tip and a conductive target into a proportional voltage signal, allowing accurate monitoring of both static and dynamic movement in rotating equipment.

        The Bently Nevada 21508-02-12-10-02 8 mm Reverse Mount Probe features a 1.0 metre (39 inch) cable length with tolerance of +0.25 m / −0.10 m and is equipped with a miniature male coaxial connector for stable signal transmission. The probe operates reliably across a wide temperature range from −30°F to +350°F (−34°C to +177°C) and supports environments with relative humidity up to 95% (non-condensing), making it suitable for demanding industrial installations.

        Constructed from polyphenylene sulfide (PPS), the Bently Nevada 21508-02-12-10-02 8 mm Reverse Mount Probe provides excellent durability and chemical resistance. Its performance remains stable even when exposed to air, water, lubricating oil, ammonium hydroxide, 10% sulfuric acid, MEK, or DMF. This robust design allows the probe to be widely used in monitoring gas turbines, steam turbines, compressors, pumps, centrifuges, motors, and generators, where reliable vibration and shaft position measurement is essential for machinery protection systems.

        The 21508-02-12-10-02 Bently Nevada 8 mm Reverse Mount Probe may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

        Bently Nevada 21508-02-12-10-02 8 mm Reverse Mount Probe 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.
        Bently Nevada 21508-02-12-10-02 8 mm Reverse Mount Probe Specs

        General

        • Manufacturer GE / Bently Nevada
        • Model 21508-02-12-10-02
        • Condition New Original ready stock
        • Product Family 21508-02-12-50-00,21508-02-12-05-00,21508-02-12-90-00
        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.
        • Radial Vibration Monitoring: Mounted on the bearing housing, it monitors the radial runout of the shaft in real time, identifying imbalances, misalignments, or bearing wear.
        • Axial Displacement (Thrust) Monitoring: Monitors the longitudinal movement of the shaft relative to the thrust bearing, preventing rotor-stator collisions.
        • Phase Reference (Keyphasor): Works with the keyway on the shaft to provide speed signals and vibration phase references for fault diagnosis (e.g., Bode plot, polar plot analysis).
        • Signal Output: The probe converts displacement changes into voltage signals, transmitting them to the 3500 system monitoring module for alarm and hazardous trip protection interlocking.
        • Explosion-proof Certification: This probe typically complies with ATEX, IECEx, and North American (CSA/NRTL) hazardous area certifications, allowing installation in Zone 0, Zone 1, or Zone 2 environments such as oil and gas plants.
        • SIL Rating: As part of the Bently Nevada monitoring loop, this system typically supports SIL 2 safety instrumented system requirements, ensuring safe shutdown can be triggered at critical moments.
        • API 670 Standard: The probe is designed and installed in full compliance with the American Petroleum Institute (API) 670 standard for shaft vibration, axial displacement, and speed monitoring systems.
        • Environmental Tolerance: The reverse mounting configuration features sealing threads to effectively prevent leakage of process media (such as lubricating oil or steam) from the mounting hole.
        • Steam Turbines and Gas Turbines: Used to monitor vibration and thermal expansion displacement of high-speed shafts.
        • Centrifugal Compressors: Installed in the bearing housing within the casing of petrochemical processes to monitor bearing condition in real time.
        • Gearboxes: Installed in confined or restricted internal spaces to monitor the operational stability of high-speed and low-speed shafts.
        • Pumps and Motors: Used in large industrial water pumps or high-power motors as part of a predictive maintenance program to prevent catastrophic mechanical failures.
        View as PDF
        Description
        Bently Nevada 21508-02-12-10-02 8 mm Reverse Mount Probe is specifically engineered to address the challenge of measuring shaft position and vibration without physical contact. In critical rotating equipment, direct-contact sensors can introduce wear, inaccurate readings, or mechanical interference. The Bently Nevada 21508-02-12-10-02 8 mm Reverse Mount Probe eliminates these issues by using a precision gap-to-voltage transducer system that measures both static and dynamic distances between the probe tip and the target surface.

        The Bently Nevada 21508-02-12-10-02 8 mm Reverse Mount Probe operates as part of a complete proximity transducer system consisting of a probe with integral coaxial cable, an extension cable, and a Proximitor®. Together, these components form a reliable monitoring solution capable of providing an 80 mil (2 mm) linear measuring range with a scale factor of 200 mV/mil (8 V/mm). This configuration allows the system to detect even small changes in shaft position or vibration with high accuracy, making it suitable for demanding machinery monitoring applications.

        With a 1.0 metre (39 inch) total cable length and a miniature male coaxial connector, the Bently Nevada 21508-02-12-10-02 8 mm Reverse Mount Probe supports flexible installation in confined or complex machine structures. It operates reliably in environments with temperatures ranging from -34°C to +177°C (-30°F to +350°F) and can tolerate relative humidity up to 95% (non-condensing). Its durable probe construction using polyphenylene sulfide (PPS) allows it to withstand harsh industrial conditions including exposure to air, water, lubricating oil, ammonium hydroxide, 10% sulfuric acid, MEK, and DMF, ensuring long-term operational stability.

        The Bently Nevada 21508-02-12-10-02 8 mm Reverse Mount Probe is widely used across industries that rely on continuous machinery condition monitoring. Typical applications include gas turbines, steam turbines, compressors, pumps, centrifuges, electric motors, and generators. Compared with conventional contact sensors or less durable proximity probes, the Bently Nevada 21508-02-12-10-02 8 mm Reverse Mount Probe offers superior durability, strong corrosion resistance, and compatibility with 3300 and 9000 Monitoring Systems, making it an ideal solution for modern vibration and displacement monitoring systems that must meet API 670 requirements.
        Alternative Names
        21508-02-12-10-00 21508-02-12-05-02 21508-02-12-50-02 21508-02-12-90-02
        Exceptional Service

        Our Mission

        • 100% Satisfaction

          We believe expertise is priceless. With over 20 years of experience, and top engineers on staff, we can help you solve or avoid problems that threaten your business.

        • Trust Guaranteed

          Not only do we have a vast inventory, our team makes sure every piece of equipment is in working condition. Your purchases are also backed by our Warranty.

        • Expertise

          Time is money, especially when your equipment is down. We work quickly to get your equipment on its way so you can get it back up and running.

        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        Does the Bently Nevada 21508-02-12-10-02 come with a warranty?
        Yes. All units supplied include Apter Power’s 12-month warranty, ensuring reliable performance and replacement support if required.
        What is the total cable length of the Bently Nevada 21508-02-12-10-02?
        The Bently Nevada 21508-02-12-10-02 includes a 1.0 metre (39 inch) cable, with a tolerance of +0.25 m / -0.10 m (+10 in / -4 in).
        What operating temperature range can the Bently Nevada 21508-02-12-10-02 handle?
        The probe can operate between -34°C and +177°C (-30°F to +350°F), making it suitable for high-temperature industrial machinery environments.
        Why is polyphenylene sulfide (PPS) used in the probe construction?
        PPS is a high-performance engineering plastic that offers excellent resistance to heat, moisture, and industrial chemicals.

        You May Also Like

        Product Browsing History

        Bently Nevada 21508-02-12-10-02
        Bently Nevada 21508-02-12-10-02
        Bently Nevada 21508-02-12-10-02
        Bently Nevada 21508-02-12-10-02
        Bently Nevada 21508-02-12-10-02
        Bently Nevada 21508-02-12-10-02