Bently Nevada 21022-00-00-017-00 Dual Axial Probe Housing Assembly

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21022-00-00-017-00 Overview

The 21022-00-00-017-00 Dual Axial Probe Housing Assembly consists of two proximity probes installed in an externally mounted protective enclosure. It is intended for mounting on the end of a machine nearest the thrust bearing to allow both probes to observe the end of the shaft for axial thrust position movement. The enclosure mounts on the machine case using four standard machine screws. The probes are mounted in sleeve/adapter assemblies, which are installed directly onto the machine case through two 3/4-in NPT threaded holes.

21022-00-00-017-00 Parameters

Housing Material:Aluminum alloy housing (sand cast, 0.3% copper free)
Sleeve Material:304 stainless steel
Temperature Range:-51°C to +177°C (-60°F to +351°F) for compatible probes

FAQ about 21022-00-00-017-00

1. What does it mean that the probe options are "00"?

Options "00" for both AA (Probe with Connector) and BB (Probe Cable Length) indicate that this housing assembly is ordered without probes . The user must purchase and install two compatible reverse mount proximity probes separately.

2. What types of probes are compatible with this 21022-00-00-017-00 housing?

This housing is designed to accept two reverse mount proximity probes. Compatible probe types include:
3300 XL 8mm reverse mount probes (e.g., 330105 series)
3300 XL NSv reverse mount probes (e.g., 330906 series)
3300 XL 11mm reverse mount probes (e.g., 330705 series)
Various approval options (CSA, ATEX, IECEx, Multiple Approvals).

3. What is the probe penetration dimension (option "017")?

The "017" option indicates a probe penetration of 1.7 inches (43 mm) . This is the length that the probe sleeves extend into the machine from the mounting surface. For penetration lengths between 1.0 and 2.0 inches, counter-boring may be required in the machine case to reduce probe side view and/or rear view effects.

4. What is the purpose of this 21022-00-00-017-00 dual axial housing?

It is intended for mounting on the end of a machine nearest the thrust bearing to allow both probes to observe the end of the shaft for axial thrust position movement . The dual configuration provides redundancy and allows for cross-checking of measurements.

5. Is this 21022-00-00-017-00 housing assembly suitable for outdoor or harsh environments?

Yes, the housing provides environmental protection for the probes, probe leads, and extension cables from dust, splashing liquid, and other environmental factors . The removable cover allows access while maintaining protection.

6.What does it mean that the fittings option is "00"?

Option "00" for fittings means no conduit fittings are included with the housing. The user must supply and install appropriate conduit fittings separately to complete the installation.