21022-28-05-035-02 | Bently Nevada Dual Axial Probe Housing Assembly

Introduction to the 21022-28-05-035-02

When axial thrust position monitoring is critical for machine reliability, the 21022-28-05-035-02 from Bently Nevada delivers a robust solution. This Dual Axial Probe Housing Assembly is designed for end-of-shaft mounting near the thrust bearing, allowing two proximity probes to observe axial movement. It meets the American Petroleum Institute's (API) 670 Standard for axial thrust position transducer housings, ensuring industry-recognized performance.

Key Features & Technical Specs

• Probe Option: 3300 XL 8 mm probe with multiple approvals (code 28).
• Probe Cable Length: 0.5 meter (20 inches) (code 05).
• Probe Penetration: 3.5 inches (code 035).
• Fittings: Two 3/4-14 NPT fittings and two 3/4-14 NPT plugs (code 02), supplied as a kit.
• Housing Material: Aluminum alloy (sand cast, 0.3% copper free) with 304 stainless steel sleeves.
• Weight: 3.6 kg (8 lb).
• Mounting: Four standard machine screws on the machine case; probes mount through two 3/4-in NPT threaded holes.

One distinctive spec is the 0.5 meter probe cable length, which simplifies installation in tight spaces while maintaining signal integrity for accurate thrust measurements.

Applications & Use Cases

This assembly is ideal for monitoring axial thrust position in turbines, compressors, and large pumps. By providing dual probe redundancy, it enhances reliability in critical rotating machinery. The external mounting allows adjustments without machine disassembly, reducing downtime during setup or maintenance.

Installation & Setup

Mount the housing on the machine case using four standard machine screws. Install the probe sleeve/adapter assemblies into the two 3/4-in NPT threaded holes. The fittings kit (two 3/4-14 NPT fittings and plugs) is supplied separately and should be installed per the manual. Probe gaps can be set through the removable cover, simplifying calibration.

Maintenance & Reliability

Regularly inspect the housing for signs of wear or environmental damage. The aluminum alloy housing with 304 stainless steel sleeves resists corrosion in industrial settings. Periodic verification of probe gap settings ensures consistent axial position readings, extending equipment life and reducing unplanned outages.

Compatibility & Integration

The 21022-28-05-035-02 is compatible with Bently Nevada 3300 XL 8 mm proximity probes and extension cables. It integrates into existing monitoring systems that accept standard proximity probe inputs. For detailed system integration, consult the official Bently Nevada documentation.

Troubleshooting & Common Issues

If readings are erratic, check probe cable connections and ensure the 0.5 meter cable is not damaged. Verify that the probe penetration is set to 3.5 inches as specified. If the housing cover is not sealing properly, inspect the gasket and tighten mounting screws evenly.

FAQ about 21022-28-05-035-02

Q: What probe type does the 21022-28-05-035-02 support?

A: It supports the Bently Nevada 3300 XL 8 mm probe with multiple approvals (option 28).

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

A: The probe cable length is 0.5 meter (20 inches), specified by option code 05.

Q: Does the housing come with fittings installed?

A: No, the fittings (two 3/4-14 NPT fittings and two plugs) are supplied as a kit and are not pre-installed.

Q: What is the weight of the 21022-28-05-035-02?

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

Q: Is this housing compliant with API 670?

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

Product Support & Availability

The Bently Nevada 21022-28-05-035-02 is available from Petro Auto Tech. In stock and ready to ship, this assembly supports your critical machinery monitoring needs. Contact Petro Auto Tech for lifecycle status and ordering details.