Comprehensive Inquiry-Ready Overview of Bently Nevada Proximity Probe Housing Assemblies

2026-01-23 10:27:29

5 min read

About the author

Written by Miya Zheng , Director of Moore Automated

Miya Zheng, Sales Director at Moore Automated, brings more than twelve years of deep, hands-on industry experience and a consistently demonstrated ability to drive commercial success. Throughout her career, miya has developed a comprehensive understanding of automation technologies, market dynamics, and customer requirements across diverse sectors. Her track record includes building sustainable client relationships, leading high-impact sales initiatives, and delivering revenue growth in both established and emerging markets.

Comprehensive Inquiry-Ready Overview of Bently Nevada Proximity Probe Housing Assemblies

What are Bently Nevada proximity probe housing assemblies? Why are they crucial in industrial condition monitoring?

Bently Nevada proximity probe housing assemblies are precision mechanical housings used to externally mount proximity probes (such as the 3300 XL and NSv series probes) onto critical rotating machinery. They protect the sensor and its extension cables from environmental hazards, allow for external probe gap adjustment or replacement without disassembling the machine, and provide conduit connection points for signal wiring in industrial monitoring systems. These housing assemblies help ensure the reliability of dynamic displacement measurements in machinery protection and diagnostics.

What makes the 21000, 24701, and 164818 series in the Bently Nevada product portfolio unique?

Each series is designed for different environments and installation challenges: the 21000 series features an aluminum housing suitable for general industrial environments; the 24701 series uses a 303 stainless steel housing for enhanced corrosion resistance and durability; and the 164818 series is a compact housing solution suitable for space-constrained or special probe configurations (including ceramic cap probes). All models feature core characteristics such as threaded conduit interfaces, O-rings, dome caps, optional bracket adapters, and CSA-certified explosion-proof models, making them suitable for hazardous areas requiring API 670 compliance.

Technical and Functional Overview of Bentley Nevada Proximity Probe Housing Assembly

Structural and Environmental Characteristics

The Bentley Nevada housing assembly includes the following key components and features:

Housing Assembly: Dome cap, threaded port for conduit connection, probe sleeve of optional length, O-ring, reverse-mount proximity probe, threaded seal, optional conduit connector, and optional bracket adapter.

Environmental Protection: All components are designed to withstand harsh industrial environments, including extreme temperatures and vibrations. The product is CSA explosion-proof certified for hazardous locations (Class I/II/III). Compliant with API 670, ensuring its suitability for mechanical protection systems.

Temperature Range: When used with a compatible 3300 XL probe, the typical operating temperature range is approximately -51°C to +177°C (-60°F to +351°F); the NSv probe has a rated temperature range of -34°C to +177°C (-30°F to +351°F).

Materials and Mechanical Properties

Assembly Model	Housing Body Material	Sleeve Material	Typical Mass (Without Fittings)
21000	Aluminum body	304 stainless steel	1.1 kg (2.4 lb) typical
24701	303 stainless steel	304 stainless steel	1.8 kg (4.1 lb) typical
164818	Compact housing (varies)	Stainless steel/design optimized for space	Approx. lighter, ~0.6 kg

Probe Compatibility and Customization

All three series are designed for mounting reverse-mounted proximity probes, including Bently Nevada's 3300 XL 8 mm, XL NSv, and XL 11 mm sensor systems. Probe cable length, bracket adapter length, and probe penetration depth can all be customized to meet installation requirements. Sleeves exceeding 304 mm (12 inches) in length may require additional support to mitigate vibration effects.

Environmental and Safety Certifications

CSA Explosion-Proof Approvals: Available with CSA certification for hazardous environments.

API 670 Compliance: Meets the American Petroleum Institute’s standard for machinery protection systems.

RoHS Compliance: Meets Directive 2011/65/EU restrictions on hazardous substances.

Comparative Parameter Table

The following table presents a high-level comparison of the three primary Bently Nevada Proximity Probe Housing Assemblies:

Feature / Parameter	21000 Series	24701 Series	164818 Series (Compact)
Primary Housing Material	Aluminum body	303 stainless steel body	Compact/stainless steel construction
Sleeve Material	304 stainless steel	304 stainless steel	Stainless/optimized for space
Weight (Approx.)	1.1 kg (2.4 lb) without fittings	1.8 kg (4.1 lb) without fittings	~0.6–0.8 kg
Probe Compatibility	3300 XL 8 mm, XL 11 mm, NSv	3300 XL 8 mm, XL 11 mm, NSv	3300 series and ceramic-capped options
Customizable Options	Cable length, standoff adapters, probe penetration	Cable length, standoff adapters, probe penetration	Cable length, mounting thread, O-ring choices
Hazardous Area Approvals	CSA Type 4 / explosion-proof options available	CSA Type 4 / explosion-proof options available	Compact variants may have limited explosion options
API 670 Compliance	Yes	Yes	Yes
Typical Applications	Standard to heavy industrial condition monitoring	Corrosive/harsh environments, heavy-duty monitoring	Space-restricted installations, compact machinery

Why Choose Moore Automated for Your Bently Nevada Proximity Probe Housing Needs?

Moore Automated specializes in helping customers procure common Bently Nevada parts, as well as hard-to-find or discontinued parts, including proximity probe housing assemblies. We offer the following services:

Inventory Sourcing: Find genuine 21000, 24701, and 164818 components—including configurations specific to probe types and custom options.

Market Pricing Optimization: Offer highly competitive prices for quality OEM parts, often better than typical distributor quotes.

Discontinued and Rare Models: Help customers find frequently searched older or discontinued part numbers in the global market. Do you need the following models? Please send us an inquiry immediately:

21000-28-05-00-070-01-02

24701-28-10-35-027-03-02

21000-16-10-00-102-03-02

164818-08-60-022-02-01-03-05

... ...

Custom probe housing models for extreme environments

Whether your project requires a standardized enclosure or a custom-engineered configuration, Moore Automated provides efficient sourcing and technical advice to ensure you get the precise components you need for reliable condition monitoring.

Automation Spare Parts & Controller

Looking for hard-to-find components?

From sourcing discontinued products to maintaining inventory, we focus on ensuring your essential parts are available when needed. Moore Automated has a 63,000-square-foot warehouse stocked with a vast selection of hard-to-find discontinued parts, including PLCs, HMIs, DCSs, panel controllers, industrial PCs, and VFDs. These parts help extend the lifespan of your existing systems, reduce costly replacements, and minimize downtime, keeping your operations running smoothly and ensuring efficient, uninterrupted production. With our competitive pricing, Moore Automated's unwavering commitment to excellence and reliability, and our exceptional expertise and rapid response capabilities in industrial automation parts, we deliver superior service.

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