21022-27-05-017-03 | Bently Nevada Dual Axial Probe Housing Assembly

What Is the 21022-27-05-017-03?

When axial thrust position monitoring demands precision and durability, the 21022-27-05-017-03 from Bently Nevada delivers a robust solution. This Dual Axial Probe Housing Assembly is designed for mounting on the end of a machine nearest the thrust bearing, allowing two proximity probes to observe the shaft end for axial thrust position movement. The external mounting simplifies probe adjustments from outside the machine while protecting internal components from dust, splashing liquid, or other environmental factors. With a 0.5-meter (20-inch) probe cable and 1.7-inch probe penetration, this assembly meets the American Petroleum Institute’s (API) 670 Standard for axial thrust position transducer housings, ensuring compliance and reliability in critical applications.

Key Features & Technical Specs

• Probe Option: 3300 XL NSv Probe with multiple approvals ensures compatibility and performance.
• Probe Cable Length: 0.5 meter (20 inches) provides flexibility for installation in tight spaces.
• Probe Penetration: 1.7 inches allows precise monitoring of shaft position.
• Fittings Option: Two cable seal grips with grommets for cable sizes 1/8-in to 3/16-in, 1/4-in to 5/16-in, 5/16-in to 3/8-in; two 3/4-14 to 1/2-14 NPT reducers are supplied as a kit.
• Housing Material: Aluminum alloy (sand cast, 0.3% copper free) with 304 stainless steel sleeves offers corrosion resistance and durability.
• Weight: 3.6 kg (8 lb) simplifies handling and installation.

One distinctive spec is the 1.7-inch probe penetration, which directly impacts measurement accuracy and reduces the risk of false readings, thereby lowering maintenance costs over time.

Applications & Use Cases

In the oil and gas industry, the 21022-27-05-017-03 is ideal for monitoring axial thrust position in compressors and turbines. For power generation, it ensures reliable operation of steam and gas turbines by providing early detection of thrust bearing wear. Similarly, in petrochemical plants, this housing assembly helps prevent costly unplanned downtime by enabling continuous condition monitoring. Its API 670 compliance makes it a preferred choice for critical rotating machinery where safety and efficiency are paramount.

Installation Guide

Mount the enclosure on the machine case using four standard machine screws. The probes are installed in sleeve/adapter assemblies, which are mounted directly onto the machine case through two 3/4-in NPT threaded holes. The removable cover provides easy access for setting probe gaps. Ensure the fittings kit (cable seal grips and reducers) is installed according to the provided instructions, as these are shipped separately and not pre-installed. Verify that the probe cable length of 0.5 meter matches your installation requirements before proceeding.

Maintenance & Reliability

Regular inspection of the aluminum alloy housing and stainless steel sleeves is recommended to maintain corrosion resistance. Check the cable seal grips for wear and replace them if necessary to preserve environmental protection. The external mounting design reduces the need for machine disassembly, saving labor costs and minimizing downtime. Following a periodic maintenance schedule extends the service life of the assembly and ensures consistent axial thrust monitoring.

Compatibility & Integration

The 21022-27-05-017-03 is designed for use with Bently Nevada 3300 XL NSv probes and extension cables. It integrates seamlessly with Bently Nevada monitoring systems for real-time data acquisition. For specific system compatibility, refer to the official Bently Nevada documentation or contact Petro Auto Tech for guidance.

FAQs about the 21022-27-05-017-03

Q: What is the probe cable length for this assembly?

A: The probe cable length is 0.5 meter (20 inches).

Q: Does the housing meet API 670 standards?

A: Yes, the dual axial position housing meets the American Petroleum Institute’s (API) 670 Standard for axial thrust position transducer housings.

Q: What materials are used in the housing construction?

A: The housing is made of aluminum alloy (sand cast, 0.3% copper free) with sleeves fabricated from 304 stainless steel.

Q: Are the fittings pre-installed when the housing is shipped?

A: No, the fittings are supplied as a kit and are not installed when the housing is shipped.

Q: What is the weight of the 21022-27-05-017-03?

A: The assembly weighs 3.6 kg (8 lb).

Product Support & Availability

The 21022-27-05-017-03 is available from Petro Auto Tech, a trusted industrial automation parts supplier. Please verify current lifecycle status and availability with Petro Auto Tech before ordering to ensure timely delivery for your project.