21022-12-05-035-02 | Bently Nevada Dual Axial Probe Housing Assembly

Introduction to the 21022-12-05-035-02

When axial thrust position monitoring demands precision and durability, the 21022-12-05-035-02 from Bently Nevada delivers a robust solution. This Dual Axial Probe Housing Assembly is designed for mounting on machine ends near the thrust bearing, allowing two proximity probes to observe shaft axial movement. The externally mounted protective enclosure shields probes, leads, and extension cables from dust and splashing liquids, ensuring reliable operation in harsh industrial environments.

Key Features & Technical Specs

• Housing assembly includes two 3300 XL 8 mm proximity probes with 0.5 meter (20 in) cable length.
• Probe penetration option set at 3.5 inches for precise axial positioning.
• Supplied with two 3/4-14 NPT fittings and two 3/4-14 NPT plugs as a kit (not pre-installed).
• Aluminum alloy housing (sand cast, 0.3% copper free) with 304 stainless steel sleeves for corrosion resistance.
• Meets API 670 Standard for axial thrust position transducer housings.
• Weight: 3.6 kg (8 lb) for sturdy yet manageable installation.

Installation & Setup

Mount the housing on the machine case using four standard machine screws. Install the probes in sleeve/adapter assemblies through two 3/4-in NPT threaded holes directly on the machine case. The removable cover provides easy access for setting probe gaps from outside the machine. Ensure all fittings are properly tightened per manufacturer guidelines to maintain environmental protection.

Maintenance & Reliability

Regular inspection of the housing and probe assemblies helps maintain measurement accuracy. Check the enclosure cover seal and NPT fittings periodically for signs of wear or contamination. The aluminum alloy and stainless steel construction resist corrosion, extending service life in demanding conditions. Follow Bently Nevada's recommended maintenance intervals to ensure long-term reliability.

FAQ about 21022-12-05-035-02

What is the probe type used in this assembly?

The 21022-12-05-035-02 uses two 3300 XL 8 mm proximity probes with 0.5 meter cable length.

What is the probe penetration depth?

The probe penetration option is set at 3.5 inches (035 option).

Does the housing come with fittings installed?

No, the fittings option (two 3/4-14 NPT fittings and plugs) is supplied as a kit and not pre-installed when shipped.

What standards does this housing meet?

It meets the American Petroleum Institute's API 670 Standard for axial thrust position transducer housings.

What materials are used in the housing construction?

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

Product Support & Availability

The 21022-12-05-035-02 is available from Petro Auto Tech. Please verify current lifecycle status and availability with Petro Auto Tech before ordering. Contact our team for pricing and lead time details.